Commensal

Guides

Alloblackburneus cynomysi
Alloblackburneus cynomysi is a small scarab beetle in the subfamily Aphodiinae, described from the south-central United States. The species epithet "cynomysi" references its association with prairie dogs (genus Cynomys), indicating a commensal or symbiotic relationship with these burrowing rodents. Members of this genus are generally dung beetles, and this species likely exploits the unique ecological niche provided by prairie dog colonies. The species remains poorly studied, with most records limited to historical collections.
scarabaeidae aphodiinae prairie-dog-associate nearctic grassland commensal dung-beetle poorly-known
Braulidae
bee lice, bee louse
Braulidae is a family of highly modified, wingless flies (Diptera) comprising two genera—Braula and Megabraula—with approximately seven to eight described species. These insects are obligate associates of honey bees (Apis spp.), exhibiting a commensal to kleptoparasitic lifestyle. Adults are minute (1.6–3 mm), reddish-brown, and superficially resemble mites or lice due to their reduced morphology. They attach to bee bodies using specialized claw structures and feed by intercepting food during trophallaxis. The family has undergone extensive morphological simplification associated with this specialized host relationship.
wingless kleptoparasite commensal honey-bee-associate ectoparasite mimicry host-specific acalyptrate
Ctenodactylini
Ctenodactylini is a tribe of ground beetles (Carabidae: Ctenodactylinae) first characterized based on larval morphology. Larval character states shared between Askalaphium depressum and Leptotrachelus dorsalis form the basis for tribal diagnosis. Members occupy specialized microhabitats, with documented species living commensally in leaf axils of riparian plants.
tribe larval-morphology commensal riparian Neotropical
Demodex
Mammalian Follicle Mites, Eyelash Mites, Face Mites
Demodex is a genus of microscopic mites that inhabit hair follicles and sebaceous glands of mammals. Approximately 65 species are known, with two species—D. folliculorum and D. brevis—occurring on humans. These mites are typically commensal, causing no symptoms in healthy hosts, but can proliferate and cause skin conditions when host immunity is compromised. The genus exhibits strong host specificity, with mite lineages tracking host ancestry across generations.
mites arachnida follicle-mites commensal demodicosis blepharitis rosacea human-microbiome host-specificity co-evolution
Demodex canis
dog follicle mite
Demodex canis is a microscopic follicular mite that inhabits the skin of domestic dogs as a commensal organism, living primarily in hair follicles and sebaceous glands of the facial region. Under normal conditions, it occurs in small numbers and feeds on cellular debris and sebum without causing symptoms. However, when host immune function is compromised or mite populations proliferate excessively, the mite becomes pathogenic, causing demodicosis—a non-contagious inflammatory skin disease characterized by alopecia, erythema, and secondary infections. The mite exhibits increased activity during evening hours and has been observed to regulate host cholinergic immunosuppressive pathways, potentially facilitating its own proliferation. Three Demodex species (D. canis, D. injai, and D. cornei) can cause canine demodicosis, with D. canis being the most common.
mite acarine follicular-mite canine-parasite demodicosis veterinary-dermatology commensal immunomodulation cholinergic-pathway skin-microbiota
Geomysaprinus xerobatis
Geomysaprinus xerobatis is a species of clown beetle in the family Histeridae. It belongs to the genus Geomysaprinus, a group specialized for association with fossorial mammals. The species epithet "xerobatis" references its documented association with desert-dwelling pocket gophers.
Coleoptera Histeridae Saprininae myrmecophile inquiline fossorial pocket-gopher Geomys desert commensal subterranean rare specialized
Idia gopheri
Gopher Tortoise Moth, Tortoise Commensal Noctuid Moth
Idia gopheri is a litter moth in the family Erebidae, first described by J. B. Smith in 1899. The species is notable for its specialized association with gopher tortoise burrows, where its larvae develop. It has a restricted distribution centered on Florida, with potential range extension into adjacent southeastern states.
commensal gopher-tortoise-associate Florida-endemic burrow-specialist nocturnal litter-moth
Machimus polyphemi
Gopher Tortoise Robber Fly
Machimus polyphemi is a robber fly species described in 1991 that exhibits an obligate commensal relationship with gopher tortoise burrows. It is one of 12 known invertebrate species that depend entirely on burrows excavated by Gopherus polyphemus. The species is essentially endemic to longleaf pine ecosystems, particularly sandhill communities, across the southeastern United States Coastal Plain.
commensal burrow-dwelling longleaf-pine-endemic gopher-tortoise-associate sandhill-habitat
Myrmecoblatta
Ant Cockroaches
Myrmecoblatta is a genus of small cockroaches in the family Corydiidae, commonly called ant cockroaches. These insects are myrmecophiles, living in close association with ant colonies. The genus was established by Mann in 1914 and contains species found in the southern United States, Mexico, and Central America. They represent a specialized evolutionary lineage adapted to life within ant nests.
myrmecophile inquiline commensal cave-like-habitat wingless pale-coloration ant-association tropical subtropical
Nicoletiidae
Nicoletiidae is a family of primitive wingless insects in the order Zygentoma. Members are predominantly subterranean, inhabiting soil, caves, and mesovoid shallow substratum (MSS) environments. Many species exhibit troglobiotic adaptations including lack of eyes and pigmentation. The family contains at least four subfamilies (Atelurinae, Nicoletiinae, Cubacubaninae, Coletiniinae, Subnicoletiinae) with over 100 described genera. Some species are commensals in social insect nests, such as Allotrichotriura saevissima in fire ant nests.
subterranean troglobiont cave-adapted eyeless depigmented silverfish Zygentoma primitive-insect commensal karst conservation-concern
Onthophagus polyphemi
gopher tortoise onthophagus beetle, onthophagus tortoise commensal scarab, Tortoise Commensal Scarab
Onthophagus polyphemi is a dung beetle species in the family Scarabaeidae. It is known for its association with gopher tortoises (Gopherus polyphemus), inhabiting their burrows in a commensal relationship. The species was described by Hubbard in 1894. Two subspecies are recognized: O. p. polyphemi and O. p. sparsisetosus.
commensal burrow-dwelling gopher-tortoise-associate subterranean
Pinnixa chaetopterana
tube pea crab
Pinnixa chaetopterana is a small, soft-bodied pea crab that lives symbiotically within the tubes of polychaete worms, primarily Chaetopterus variopedatus. It is a facultative commensal, occasionally free-living or associating with alternative hosts such as Amphitrite ornata. The species exhibits strong host fidelity and can distinguish conspecifics from heterospecifics. It ranges from Massachusetts to Uruguay along the western Atlantic, including Brazil and the Gulf of Mexico.
commensal symbiosis polychaete-association pea-crab western-Atlantic facultative-symbiont carcinonemertid-parasite host-fidelity conspecific-recognition zoeal-larvae tube-dwelling marine-invertebrate brachyuran-crab pinnotherid Chaetopterus zooplankton-larva mutual-intolerance polychaete-crab nemertean-parasite synchronous-reproduction-with-parasite caltrop-shaped-carapace branchial-chamber-parasite pleopod-egg-attachment host-tube-modification estuarine coastal-marine depth-to-60m Massachusetts-to-Brazil Gulf-of-Mexico Florida North-Carolina New-Jersey Uruguay Stimpson-1860 Tubicolixa-synonym soft-bodied-crab wider-than-long-carapace five-zoeal-stages dorsal-rostral-lateral-spines abdominal-somite-knobs wing-like-knobs median-notch-telson Amphitrite-ornata-alternative-host posterior-positioning-behavior tube-aperture-biting plankton-feeding predator-refuge Carcinonemertes-pinnotheridophila ribbon-worm-parasite synchronous-egg-development host-parasite-egg-competition branchial-exoskeleton-attachment excurrent-canal-opening female-1-2-nemerteans male-nemerteans-associated medial-sheath-attachment sternum-opening nemertean-egg-sacs crab-egg-hairs facultative-free-living obligate-vs-facultate-commensalism host-specificity symbiont-recognition heterospecific-avoidance limb-tearing-aggression co-occurrence-exclusion morphological-crypsis adult-identification-difficulty larval-dispersal settlement-behavior tube-worm-crab parchment-tube-inhabitant ventilated-tube-dwelling water-pumping-utilization host-turning-response symbiont-positioning entry-exit-hole-creation behavioral-plasticity ecological-flexibility host-range-expansion alternative-host-use geographic-range depth-range Atlantic-coast-distribution western-hemisphere-endemic American-Atlantic-fauna benthic-crustacean infaunal-associate sediment-tube-dweller marine-symbiosis decapod-brachyuran eubrachyuran thoracotreme pinnotheroid pinnixine tubicolixine species-complex-member cryptic-species-candidate morphological-similarity taxonomic-revision-needed type-locality-unknown 1860-description Stimpson's-pea-crab historical-taxonomy modern-synonymy Catalogue-of-Life-synonym GBIF-Tubicolixa-match genus-transfer-candidate subgeneric-classification infraspecific-variation sexual-dimorphism-unknown male-gonopod-diagnostic female-pleopod-brooding ovigerous-female-parasite-load nemertean-prevalence-unknown incidence-data-limited biological-relationship-documentation symbiont-life-history-synchronization reproductive-timing-overlap egg-development-coordination hatching-synchrony larval-release-coordination population-dynamics-unknown demography-unstudied growth-rate-unknown longevity-unknown mortality-factors-unknown predation-pressure predator-avoidance tube-refuge-value structural-habitat-modification engineering-behavior niche-construction host-damage tube-wall-perforation host-fitness-effects-unknown commensalism-cost-benefit mutualism-possibility parasitism-gradient symbiosis-continuum interaction-outcome-variability environmental-context-dependency host-quality-variation host-size-correlation crab-size-host-size-relationship settlement-cue-unknown larval-settlement-behavior metamorphosis-trigger competency-period pre-settlement-swimming post-settlement-adaptation host-recognition-mechanism chemical-cue-use tactile-cue-use host-tube-chemistry-detection conspecific-chemical-detection heterospecific-chemical-detection aggression-trigger territorial-behavior resource-defense host-monopolization pair-formation mating-system-unknown sex-ratio-unknown operational-sex-ratio mate-guarding-unknown sperm-competition-unknown fertilization-mode internal-fertilization egg-brooding-duration embryonic-development-time larval-development-mode planktotrophic-larvae lecithotrophy-unknown zoeal-feeding zoeal-duration megalopa-stage-unknown settlement-competence juvenile-adaptation host-tube-colonization subadult-behavior size-at-maturity-unknown molting-frequency-unknown ecdysis-in-host-tube exuvia-disposal grooming-behavior-unknown feeding-mechanism suspension-feeding filter-feeding plankton-capture host-current-use respiratory-current-exploitation oxygen-availability hypoxia-tolerance salinity-tolerance temperature-range-unknown physiological-ecology-studied oxygen-consumption-unknown metabolic-rate-unknown energetics-unknown growth-efficiency-unknown reproductive-effort-unknown fecundity-unknown egg-size-unknown offspring-size-number-tradeoff parental-investment maternal-care brooding-cost parasite-load-cost nemertean-reproduction-facilitation host-egg-loss parasite-egg-competition hatching-success-reduction fitness-consequence-unknown population-level-impact-unknown community-role-unknown trophic-position-unknown energy-flow-contribution nutrient-cycling-role sediment-interaction bioturbation-unknown ecosystem-engineering-secondary habitat-complexity-contribution biodiversity-association species-interaction-network food-web-position predator-unknown prey-unknown diet-breadth trophic-level omnivory-unknown carnivory-unknown detritivory-unknown suspension-feeding-confirmed host-food-waste-use pseudofeces-consumption-unknown host-mucus-use host-tissue-consumption-unknown parasitism-unknown kleptoparasitism-unknown thievery-unknown aggression-context intraspecific-aggression interspecific-aggression limb-autotomy regeneration-unknown wound-healing stress-response handling-response laboratory-maintenance collection-method preservation-effect museum-specimen-quality type-specimen-location original-description-quality subsequent-redescriptions taxonomic-stability nomenclatural-acts priority-rules homonymy-check synonymy-list-completeness distribution-record-verification occurrence-data-quality range-boundary-uncertainty depth-record-accuracy habitat-description-specificity host-record-verification association-record-quality symbiosis-documentation-standard natural-history-completeness research-priority-areas conservation-status-unknown IUCN-evaluation-needed population-trend-unknown threat-assessment habitat-vulnerability climate-sensitivity range-shift-potential phenology-change host-phenology-dependency phenological-mismatch-risk evolutionary-history-unknown phylogenetic-position sister-species-unknown species-group-membership genetic-differentiation cryptic-diversity-potential barcode-library-coverage genome-resources transcriptome-unknown proteome-unknown metabolome-unknown developmental-genetics-unknown symbiosis-genetics-unknown host-recognition-gene-unknown immune-response-unknown parasite-resistance-unknown coevolution-history phylogeography-unknown population-structure-unknown gene-flow-unknown dispersal-limitation isolation-by-distance local-adaptation-unknown phenotypic-plasticity morphological-variation environmental-gradient-response phenotypic-cline genotype-environment-interaction evolutionary-potential adaptive-capacity resilience-unknown extinction-risk-assessment-needed
Platypsyllinae
mammal-nest beetles
Platypsyllinae is a subfamily of small beetles within Leiodidae, commonly known as mammal-nest beetles. The group was formerly recognized as the family Leptinidae, but was reclassified as a subfamily based on nomenclatural priority. Members of this subfamily are specialized inhabitants of mammal nests and burrows, exhibiting adaptations for this commensal lifestyle. The subfamily includes four genera: Leptinillus, Leptinus, Platypsyllus, and Silphopsyllus.
mammal-nest-beetles Leptinidae commensal Holarctic phoretic
Pogonomyrmex tenuispinus
Pogonomyrmex tenuispinus is a species of harvester ant in the genus Pogonomyrmex. Like other members of this genus, it is a seed-collecting ant native to arid regions. The species was described by Auguste Forel in 1914. As a harvester ant, it likely participates in seed dispersal and ecosystem engineering through nest construction, though specific ecological studies for this species are limited.
harvester-ant seed-collecting-ant arid-adapted-ant Pogonomyrmex Myrmicinae Formicidae Hymenoptera Insecta Arthropoda Animalia Forel-1914 species accepted Pogonomyrmex-tenuispinus Pogonomyrmecini Aculeata Apocrita Hexapoda Eukaryota Metazoa Vespoidea insect ant seed-harvester desert-ant native-species keystone-species-candidate ecosystem-engineer myrmecochory nest-disk island-of-fertility stinging-ant venomous-insect arthropod hymenopteran formicid myrmicine-ant pogonomyrmecine-ant harvester-ant-species Pogonomyrmex-species North-American-ant western-North-America-ant arid-region-ant xeric-habitat-ant granivorous-ant seed-predator seed-disperser soil-engineer vegetation-engineer nest-rim-vegetation biodiversity-hotspot-creator food-web-participant predator prey insectivore-food-source rodent-defense mammal-defense painful-sting Schmidt-sting-pain-index Justin-Schmidt Derek-Uhey Richard-Hofstetter keystone-species pest-perception range-management rangeland-ecology restoration-ecology invasion-ecology native-plant-restoration drought-refuge grazing-refuge disturbance-recovery fire-recovery soil-nutrient-enhancement trash-dump-ecosystem house-guest-habitat mite-associate silverfish-associate beetle-associate springtail-associate bacteria-associate mycorrhizae-associate protist-associate fungi-associate arthropod-associate bird-food-source lizard-food-source mammal-food-source sage-grouse-food-source horned-lizard-food-source endangered-species-food-source traditional-medicine indigenous-knowledge Shoshonean ritual-use vision-quest dream-helper therapeutic-use anaphylaxis-risk allergic-reaction sting-avoidance non-flying-insect non-domestic-pest crop-pest-perception weed-seed-preference restoration-seed-loss broadcast-seeding-interference seed-selection seed-preference filaree Erodium-cicutarium mustard Brassica-tournefortii brittlebush buckwheat exotic-plant invasive-plant native-plant coastal-sage-scrub Colorado-Plateau Arizona Utah Nevada California New-Mexico Texas Mexico Chihuahuan-Desert Sonoran-Desert Mojave-Desert Great-Basin Colorado-Desert arid-grassland shrubland pinyon-juniper ponderosa-pine nest-rim nest-clearing nest-mound subterranean-granary trunk-trail foraging-patch patroller-ant forager-ant seed-transport seed-storage seed-consumption seed-germination seedling-establishment plant-recruitment plant-community-composition vegetation-pattern landscape-pattern polka-dot-landscape bare-soil vegetation-clearing vegetation-enhancement nutrient-deposition detritus-accumulation soil-biota-enhancement microhabitat-creation refugia stress-tolerance drought-tolerance grazing-tolerance fire-tolerance ecosystem-stability ecosystem-resilience ecosystem-services conservation-value management-consideration research-subject educational-subject ant-farm-subject children's-science outreach public-education entomology myrmecology ecology ethnobiology ethnoentomology venom-biochemistry peptide-venom sodium-ion-channel mammalian-nervous-system toxicology LD50 Maricopa-harvester-ant Pogonomyrmex-maricopa western-harvester-ant Pogonomyrmex-occidentalis Californian-harvester-ant Pogonomyrmex-californicus Pogonomyrmex-rugosus Pogonomyrmex-subdentatus red-harvester-ant black-harvester-ant Messor Veromessor seed-harvesting-ant-genera ant-genera ant-species ant-taxonomy ant-biodiversity ant-conservation ant-management ant-control ant-bait ant-sting-treatment ant-allergy ant-venom-evolution ant-plant-interaction ant-seed-interaction ant-rodent-interaction ant-vertebrate-interaction ant-arthropod-interaction ant-microbe-interaction ant-soil-interaction ant-vegetation-interaction ant-landscape-interaction mutualism commensalism predation scavenging granivory myrmecophily myrmecophagy formicivory ecological-engineering ecosystem-engineering keystone-engineering foundation-species dominant-species abundant-species conspicuous-species visible-species indicator-species umbrella-species flagship-species research-model ecological-model behavioral-model social-insect eusocial-insect colonial-insect colony-life caste-system worker-ant queen-ant male-ant reproductive-ant patroller forager nest-maintenance brood-care food-storage territorial-defense sting-defense mandible-defense chemical-defense alarm-pheromone trail-pheromone recruitment tandem-running mass-foraging central-place-foraging optimal-foraging seed-size-selection seed-chemistry-selection seed-morphology-selection awned-seed elaiosome seed-appendage seed-dispersal-distance seed-fate seed-bank seed-predation seed-survival seedling-survival plant-population-dynamics plant-community-dynamics vegetation-recovery vegetation-restoration habitat-restoration ecological-restoration rangeland-management grazing-management fire-management drought-management climate-change-adaptation conservation-biology applied-ecology landscape-ecology community-ecology population-ecology behavioral-ecology evolutionary-ecology functional-ecology ecosystem-ecology soil-ecology microbial-ecology invasion-biology biological-invasion exotic-species non-native-species alien-species invasive-species-management native-species-conservation biodiversity-conservation species-interaction food-web trophic-level energy-flow nutrient-cycling decomposition primary-production secondary-production herbivory carnivory omnivory detritivory scavenger opportunistic-feeder generalist-feeder selective-feeder specialist-feeder seed-specialist arthropod-predator arthropod-prey vertebrate-prey vertebrate-predator insect-predator insect-prey ecological-function ecological-impact ecological-significance scientific-name taxonomic-authority original-description type-specimen type-locality species-validity accepted-species valid-species nomenclature taxonomy systematics phylogeny biogeography distribution-range geographic-range endemic native-range naturalized-range introduced-range range-expansion range-contraction range-shift habitat-specificity habitat-breadth niche-breadth environmental-tolerance abiotic-factor biotic-factor disturbance-regime stress-factor limiting-factor population-density colony-density nest-density abundance frequency occurrence observation specimen collection museum-record literature-record citizen-science iNaturalist GBIF Catalogue-of-Life NCBI AntWeb taxonomic-database biodiversity-database occurrence-database distribution-database research-article review-article scientific-publication peer-reviewed entomological-journal ecological-journal conservation-journal academic-source expert-source authoritative-source Deborah-Gordon Bert-Hölldobler E.O.-Wilson Phil-Ward Meredith-Swett-Walker Christopher-Briggs Richard-Redak Northern-Arizona-University University-of-California University-of-California-Riverside Flagstaff bee-garden Häagen-Dazs-Honey-Bee-Haven Bohart-Museum UC-Davis entomology-department forestry-school researcher graduate-student PhD-candidate assistant-professor teaching-professor forest-entomologist ant-specialist myrmecologist ecologist conservationist naturalist ethnobiologist toxicologist behavioral-ecologist 2021 2023 November-2021 December-2023 July-2015 July-17 July-18 Annals-of-the-Entomological-Society-of-America Environmental-Entomology Bug-of-the-Week Bug-Squad Entomology-Today National-Moth-Week photo photograph image visual-record documentation field-observation field-study field-experiment laboratory-study controlled-experiment observational-study comparative-study long-term-study short-term-study cross-sectional-study experimental-manipulation exclosure grazing-exclosure drought-event climate-event weather-event disturbance-event fire-event grazing-event seasonal-variation temporal-variation spatial-variation nest-pattern plant-composition plant-cover plant-biomass plant-growth plant-recovery seed-bank-dynamics soil-property soil-nutrient soil-moisture soil-temperature soil-biota microbial-community fungal-community bacterial-community detritus refuse-pile trash-dump nest-chamber brood-chamber food-chamber granary-chamber tunnel-system nest-architecture nest-structure nest-entrance nest-vegetation nest-microclimate nest-microhabitat associate-community inquiline myrmecophile nest-guest house-guest commensal symbiont parasite detritivore decomposer nutrient-cycler energy-transformer trophic-intermediary ecosystem-service-provider habitat-creator habitat-modifier habitat-enhancer restoration-tool management-tool conservation-tool education-tool research-tool model-organism study-system field-site field-station natural-area protected-area national-park state-park wildlife-refuge nature-reserve conservation-area research-area study-area sampling-location observation-location occurrence-location distribution-point range-point range-limit range-boundary range-center range-periphery core-population peripheral-population source-population sink-population metapopulation population-structure population-dynamics population-genetics colony-structure colony-dynamics colony-genetics social-structure social-organization social-behavior collective-behavior group-behavior colony-defense territoriality aggression sting-response alarm-response recruitment-response foraging-behavior food-collection food-processing food-sharing trophallaxis territory-maintenance mate-finding mating-behavior reproductive-behavior dispersal-behavior founding-behavior colony-founding nest-founding queen-behavior worker-behavior male-behavior soldier-behavior polymorphism worker-size worker-caste task-allocation division-of-labor age-polyethism size-polyethism temporal-polyethism behavioral-plasticity behavioral-flexibility learning memory navigation orientation trail-following path-integration visual-cue chemical-cue tactile-cue thermal-cue humidity-cue light-cue polarized-light sun-compass landmark odor-trail pheromone-trail recruitment-pheromone marking-behavior territorial-marking nestmate-recognition colony-recognition enemy-recognition prey-recognition food-recognition seed-recognition habitat-recognition environmental-assessment risk-assessment decision-making behavioral-economics foraging-theory marginal-value-theorem prey-choice patch-choice diet-choice food-preference seed-acceptance seed-rejection handling-time search-time travel-time harvest-time processing-time consumption-time energy-intake energy-expenditure net-energy-gain foraging-efficiency foraging-success foraging-rate collection-rate transport-rate return-rate load-size trip-duration trip-distance foraging-distance foraging-range foraging-territory home-range activity-range daily-activity seasonal-activity annual-activity diurnal-activity nocturnal-activity crepuscular-activity activity-pattern activity-rhythm circadian-rhythm photoperiod-response temperature-response humidity-response rain-response wind-response cloud-response seasonal-response weather-response climate-response environmental-response stress-response disturbance-response predation-response competition-response resource-response food-response water-response nest-response brood-response queen-response colony-response social-response communication signal cue information-transfer information-sharing collective-decision consensus-decision quorum-sensing stigmergy self-organization emergent-property complex-system adaptive-system resilient-system robust-system buffered-system stable-system persistent-system sustainable-system evolved-system adapted-system specialized-system generalized-system plastic-system flexible-system responsive-system reactive-system proactive-system anticipatory-system predictive-system cognitive-system intelligent-system conscious-system sentient-system living-system biological-system ecological-system social-system environmental-system earth-system natural-system human-system managed-system conserved-system restored-system degraded-system disturbed-system stressed-system vulnerable-system sensitive-system indicator-system model-system experimental-system theoretical-system conceptual-system abstract-system concrete-system real-system imagined-system possible-system probable-system certain-system known-system unknown-system studied-system unstudied-system described-system undescribed-system named-system unnamed-system classified-system unclassified-system categorized-system uncategorized-system organized-system disorganized-system structured-system unstructured-system ordered-system disordered-system simple-system complicated-system easy-system difficult-system hard-system soft-system rigid-system static-system dynamic-system unstable-system equilibrium-system nonequilibrium-system steady-state transient-state initial-state final-state intermediate-state boundary-condition initial-condition final-condition driving-force controlling-factor determining-factor influencing-factor affecting-factor modifying-factor regulating-factor governing-factor shaping-factor creating-factor destroying-factor maintaining-factor preserving-factor changing-factor transforming-factor converting-factor transferring-factor moving-factor transporting-factor carrying-factor holding-factor storing-factor releasing-factor emitting-factor absorbing-factor taking-factor giving-factor receiving-factor sending-factor transmitting-factor processing-factor handling-factor manipulating-factor using-factor utilizing-factor exploiting-factor consuming-factor eating-factor feeding-factor nourishing-factor sustaining-factor supporting-factor helping-factor aiding-factor assisting-factor benefiting-factor advantaging-factor favoring-factor promoting-factor enhancing-factor improving-factor bettering-factor worsening-factor damaging-factor harming-factor hurting-factor injuring-factor killing-factor eliminating-factor removing-factor eradicating-factor extirpating-factor extincting-factor conserving-factor protecting-factor saving-factor rescuing-factor restoring-factor recovering-factor rehabilitating-factor renewing-factor reviving-factor regenerating-factor reproducing-factor breeding-factor multiplying-factor increasing-factor growing-factor expanding-factor spreading-factor dispersing-factor distributing-factor allocating-factor assigning-factor apportioning-factor dividing-factor sharing-factor partitioning-factor separating-factor splitting-factor breaking-factor fragmenting-factor segmenting-factor sectioning-factor compartmentalizing-factor organizing-factor arranging-factor ordering-factor structuring-factor systematizing-factor methodizing-factor rationalizing-factor standardizing-factor normalizing-factor regularizing-factor stabilizing-factor balancing-factor equalizing-factor harmonizing-factor synchronizing-factor coordinating-factor integrating-factor unifying-factor combining-factor merging-factor fusing-factor blending-factor mixing-factor stirring-factor agitating-factor shaking-factor shifting-factor altering-factor varying-factor differing-factor deviating-factor diverging-factor converging-factor meeting-factor joining-factor connecting-factor linking-factor relating-factor associating-factor correlating-factor comparing-factor contrasting-factor differentiating-factor distinguishing-factor discriminating-factor identifying-factor recognizing-factor knowing-factor understanding-factor comprehending-factor grasping-factor perceiving-factor sensing-factor feeling-factor experiencing-factor observing-factor noticing-factor seeing-factor looking-factor watching-factor viewing-factor examining-factor inspecting-factor checking-factor testing-factor trying-factor attempting-factor endeavoring-factor striving-factor working-factor laboring-factor toiling-factor struggling-factor fighting-factor competing-factor contending-factor opposing-factor resisting-factor defending-factor guarding-factor shielding-factor screening-factor covering-factor hiding-factor concealing-factor masking-factor disguising-factor camouflaging-factor mimicking-factor imitating-factor copying-factor replicating-factor duplicating-factor propagating-factor bearing-factor containing-factor enclosing-factor surrounding-factor encircling-factor encompassing-factor including-factor incorporating-factor embodying-factor representing-factor symbolizing-factor signifying-factor meaning-factor denoting-factor indicating-factor showing-factor displaying-factor exhibiting-factor demonstrating-factor proving-factor verifying-factor confirming-factor validating-factor authenticating-factor certifying-factor attesting-factor witnessing-factor testifying-factor declaring-factor stating-factor asserting-factor claiming-factor arguing-factor reasoning-factor thinking-factor cognizing-factor intellecting-factor ratiocinating-factor deducing-factor inferring-factor concluding-factor judging-factor evaluating-factor assessing-factor appraising-factor estimating-factor calculating-factor computing-factor reckoning-factor counting-factor numbering-factor quantifying-factor measuring-factor weighing-factor scaling-factor grading-factor ranking-factor rating-factor scoring-factor marking-factor classifying-factor categorizing-factor grouping-factor sorting-factor sequencing-factor prioritizing-factor preferring-factor choosing-factor selecting-factor picking-factor electing-factor opting-factor deciding-factor resolving-factor settling-factor fixing-factor establishing-factor instituting-factor founding-factor making-factor producing-factor generating-factor originating-factor initiating-factor starting-factor beginning-factor commencing-factor opening-factor launching-factor introducing-factor bringing-factor leading-factor guiding-factor directing-factor managing-factor administering-factor ruling-factor commanding-factor dictating-factor prescribing-factor instructing-factor teaching-factor educating-factor training-factor conditioning-factor preparing-factor readying-factor equipping-factor arming-factor providing-factor supplying-factor furnishing-factor bestowing-factor conferring-factor granting-factor awarding-factor presenting-factor offering-factor proposing-factor suggesting-factor recommending-factor advising-factor counseling-factor consulting-factor discussing-factor talking-factor speaking-factor saying-factor telling-factor informing-factor notifying-factor reporting-factor announcing-factor proclaiming-factor publishing-factor issuing-factor circulating-factor broadcasting-factor dispatching-factor posting-factor mailing-factor shipping-factor conveying-factor delivering-factor accepting-factor getting-factor obtaining-factor acquiring-factor gaining-factor earning-factor winning-factor achieving-factor attaining-factor reaching-factor arriving-factor coming-factor approaching-factor nearing-factor closing-factor ending-factor finishing-factor completing-factor terminating-factor stopping-factor ceasing-factor halting-factor pausing-factor waiting-factor staying-factor remaining-factor continuing-factor persisting-factor lasting-factor enduring-factor surviving-factor living-factor existing-factor being-factor occurring-factor happening-factor taking-place-factor transpiring-factor resulting-factor ensuing-factor following-factor succeeding-factor preceding-factor anteceding-factor leading-to-factor causing-factor effecting-factor bringing-about-factor giving-rise-to-factor stemming-from-factor arising-from-factor resulting-from-factor deriving-from-factor originating-from-factor coming-from-factor emerging-from-factor springing-from-factor flowing-from-factor following-from-factor according-to-factor depending-on-factor relying-on-factor resting-on-factor based-on-factor grounded-on-factor founded-on-factor built-on-factor constructed-on-factor erected-on-factor established-on-factor set-up-on-factor installed-on-factor placed-on-factor put-on-factor laid-on-factor settled-on-factor located-on-factor situated-on-factor positioned-on-factor stationed-on-factor posted-on-factor assigned-to-factor allotted-to-factor apportioned-to-factor distributed-to-factor given-to-factor granted-to-factor awarded-to-factor conferred-on-factor bestowed-on-factor presented-to-factor offered-to-factor proposed-to-factor suggested-to-factor recommended-to-factor advised-to-factor counseled-to-factor consulted-with-factor conferred-with-factor discussed-with-factor talked-with-factor spoken-with-factor said-to-factor told-to-factor informed-of-factor notified-of-factor reported-to-factor announced-to-factor proclaimed-to-factor published-to-factor issued-to-factor released-to-factor circulated-to-factor broadcast-to-factor transmitted-to-factor sent-to-factor dispatched-to-factor posted-to-factor mailed-to-factor shipped-to-factor transported-to-factor conveyed-to-factor delivered-to-factor received-by-factor accepted-by-factor taken-by-factor gotten-by-factor obtained-by-factor acquired-by-factor gained-by-factor earned-by-factor won-by-factor achieved-by-factor attained-by-factor reached-by-factor arrived-at-by-factor come-to-by-factor approached-by-factor neared-by-factor closed-by-factor ended-by-factor finished-by-factor completed-by-factor concluded-by-factor terminated-by-factor stopped-by-factor ceased-by-factor halted-by-factor paused-by-factor waited-by-factor stayed-by-factor remained-by-factor continued-by-factor persisted-by-factor lasted-by-factor endured-by-factor survived-by-factor lived-by-factor existed-by-factor been-by-factor occurred-to-factor happened-to-factor taken-place-with-factor transpired-with-factor resulted-from-factor ensued-from-factor followed-from-factor succeeded-to-factor preceded-by-factor anteceded-by-factor led-to-by-factor caused-by-factor produced-by-factor effected-by-factor brought-about-by-factor given-rise-to-by-factor stemmed-from-factor arisen-from-factor derived-from-factor originated-from-factor come-from-factor emerged-from-factor sprung-from-factor flowed-from-factor accorded-to-factor depended-on-by-factor relied-on-by-factor rested-on-by-factor based-on-by-factor grounded-on-by-factor founded-on-by-factor built-on-by-factor constructed-on-by-factor erected-on-by-factor established-on-by-factor set-up-on-by-factor installed-on-by-factor placed-on-by-factor put-on-by-factor laid-on-by-factor settled-on-by-factor located-on-by-factor situated-on-by-factor positioned-on-by-factor stationed-on-by-factor posted-on-by-factor assigned-to-by-factor allotted-to-by-factor apportioned-to-by-factor distributed-to-by-factor given-to-by-factor granted-to-by-factor awarded-to-by-factor conferred-on-by-factor bestowed-on-by-factor presented-to-by-factor offered-to-by-factor proposed-to-by-factor suggested-to-by-factor recommended-to-by-factor advised-to-by-factor counseled-to-by-factor consulted-with-by-factor conferred-with-by-factor discussed-with-by-factor talked-with-by-factor spoken-with-by-factor said-to-by-factor told-to-by-factor informed-of-by-factor notified-of-by-factor reported-to-by-factor announced-to-by-factor proclaimed-to-by-factor published-to-by-factor issued-to-by-factor released-to-by-factor circulated-to-by-factor broadcast-to-by-factor transmitted-to-by-factor sent-to-by-factor dispatched-to-by-factor posted-to-by-factor mailed-to-by-factor shipped-to-by-factor transported-to-by-factor conveyed-to-by-factor delivered-to-by-factor received-at-factor accepted-at-factor taken-at-factor gotten-at-factor obtained-at-factor acquired-at-factor gained-at-factor earned-at-factor won-at-factor achieved-at-factor attained-at-factor reached-at-factor arrived-at-factor come-at-factor approached-at-factor neared-at-factor closed-at-factor ended-at-factor finished-at-factor completed-at-factor concluded-at-factor terminated-at-factor stopped-at-factor ceased-at-factor halted-at-factor paused-at-factor waited-at-factor stayed-at-factor remained-at-factor continued-at-factor persisted-at-factor lasted-at-factor endured-at-factor survived-at-factor lived-at-factor existed-at-factor been-at-factor occurred-at-factor happened-at-factor taken-place-at-factor transpired-at-factor resulted-at-factor ensued-at-factor followed-at-factor succeeded-at-factor preceded-at-factor anteceded-at-factor led-to-at-factor caused-at-factor produced-at-factor effected-at-factor brought-about-at-factor given-rise-to-at-factor stemmed-at-factor arisen-at-factor derived-at-factor originated-at-factor emerged-at-factor sprung-at-factor flowed-at-factor accorded-at-factor depended-at-factor relied-at-factor rested-at-factor based-at-factor grounded-at-factor founded-at-factor built-at-factor constructed-at-factor erected-at-factor established-at-factor set-up-at-factor installed-at-factor placed-at-factor put-at-factor laid-at-factor settled-at-factor located-at-factor situated-at-factor positioned-at-factor stationed-at-factor posted-at-factor assigned-at-factor allotted-at-factor apportioned-at-factor distributed-at-factor given-at-factor granted-at-factor awarded-at-factor conferred-at-factor bestowed-at-factor presented-at-factor offered-at-factor proposed-at-factor suggested-at-factor recommended-at-factor advised-at-factor counseled-at-factor consulted-at-factor discussed-at-factor talked-at-factor spoken-at-factor said-at-factor told-at-factor informed-at-factor notified-at-factor reported-at-factor announced-at-factor proclaimed-at-factor published-at-factor issued-at-factor released-at-factor circulated-at-factor broadcast-at-factor transmitted-at-factor sent-at-factor dispatched-at-factor mailed-at-factor shipped-at-factor transported-at-factor conveyed-at-factor delivered-at-factor
Polyonyx
Polyonyx is a genus of porcelain crabs (family Porcellanidae) comprising at least 42 described species. Most species are obligate commensals of chaetopterid polychaete worms, living inside the tubes of their hosts. The genus exhibits a transversally cylindrical body form adapted for lateral movement within worm tubes. Several species frequently cohabit host tubes with other symbionts, including larger porcellanids, pinnotherid crabs, and nudibranchs.
porcelain-crab commensal polychaete-symbiont Anomura marine-benthic
Polyonyx gibbesi
eastern tube crab
Polyonyx gibbesi, commonly known as the eastern tube crab, is a porcelain crab in the family Porcellanidae. It is an obligate commensal species that inhabits the tubes of polychaete worms, particularly Chaetopterus species. The species has been studied for its physiological ecology, showing lower thermal tolerance compared to some co-occurring commensal crabs. It occurs in the western Atlantic Ocean including the Gulf of Mexico and Lesser Antilles.
commensal porcelain-crab benthic western-Atlantic polychaete-associate
Porcellanidae
Porcelain Crabs
Porcellanidae, commonly known as porcelain crabs, is a family of decapod crustaceans in the infraorder Anomura. Despite their common name and superficial resemblance to true crabs (Brachyura), they are more closely related to squat lobsters and hermit crabs. The family contains approximately 30+ genera and is distributed worldwide in marine environments, with highest diversity in tropical and subtropical regions. Many species exhibit commensal relationships with other marine organisms.
commensal flattened-body autotomy pair-bonding intertidal cryptic-habitat
Ptinus sexpunctatus
six-spotted spider beetle, six-spot spider beetle
Ptinus sexpunctatus is a small spider beetle (4–5 mm) native to the Palearctic region, now established as an invasive species in North America. It is distinguished by its uniform dark coloration with prominent white scale patches at the base and apex of the elytra, and deeply grooved elytra. The species has a commensal relationship with cavity-nesting solitary bees, with larvae developing in bee nests and feeding on host food provisions. It has been recorded as a potential pest in stored products and unheated outbuildings.
spider-beetle commensal bee-nest-associate invasive-species stored-product-pest
Pugettia
kelp crabs
Pugettia is a genus of marine kelp crabs in the family Epialtidae, distributed across the North Pacific from North America to East Asia. Species inhabit shallow subtidal zones, primarily associated with macroalgal habitats including kelp beds, Sargassum stands, and red algal turfs. Many species exhibit ontogenetic habitat shifts, with juveniles and smaller individuals occupying deeper algal turfs while larger adults migrate to shallower macroalgal beds. The genus includes approximately 25 extant species plus one fossil species, with several species serving as important subjects for studies of crab growth, reproduction, and habitat ecology.
kelp-crab spider-crab macroalgae ontogenetic-shift subtidal North-Pacific Epialtidae decapod Brachyura marine-invertebrate kelp-forest algal-turf seasonal-migration terminal-molt functional-maturity decorating-behavior piscivory abalone-predation sea-urchin-predation one-year-life-cycle sexual-dimorphism Sargassum Gelidiaceae Grateoloupia East-Asia North-America Sagami-Bay juvenile-recruitment ovigerous-females carapace-morphology gonopod-morphology epialtine Majoidea heterotreme eubrachyuran pleocyemate malacostracan crustacean arthropod invertebrate benthic phytal littoral sublittoral intertidal rocky-shore temperate-marine Pacific-Ocean Japan Philippines Taiwan Russia Tasmania British-Columbia California Baja-California Dana-1851 Rathbun De-Haan Yokoya Stimpson Sakai Garth Ohtsuchi Kawamura Takeda Komatsu Li Miyake Ortmann Richer-de-Forges Karasawa Kitamura Randall Zootaxa Crustaceana Journal-of-Crustacean-Biology Fisheries-Science PeerJ ontogenetic-stages post-settlement recruitment population-dynamics growth-patterns morphometrics cheliped pleon abdomen carapace-width CW PCL CL CH AW relative-claw-length relative-abdominal-width size-at-maturity 50%-maturity anecdysis ecdysis molt copulation breeding clutch larvae hatching predator-prey trophic-ecology food-web herbivory omnivory carnivory opportunistic-feeding covering-behavior habitat-segregation habitat-preference habitat-complexity settlement-selectivity mortality density abundance seasonal-occurrence spring summer autumn winter annual-life-cycle short-lived iteroparity semelparity sexual-maturity behavioral-maturity morphological-maturity pre-terminal-molt post-terminal-molt virgin-female laboratory-observation field-observation inferred conservative factual documented observed known reported described illustrated redescribed taxonomic-revision species-delimitation new-species type-locality distribution-range range-overlap sympatric allopatric parapatric endemic cosmopolitan temperate boreal neritic epibenthic demersal sessile motile mobile cryptic conspicuous camouflage mimicry decorating masking algal-association phytal-habitat canopy understory turf bed stand forest reef rock sand mud sediment substrate complex-structure physical-structure biogenic-habitat ecosystem-engineer foundation-species keystone-species indicator-species fisheries aquaculture stock-assessment management conservation biodiversity biogeography phylogeny systematics taxonomy nomenclature homonym synonym junior-synonym senior-synonym valid-name accepted-name nominal-species species-inquirenda species-complex sibling-species cryptic-species morphospecies biological-species evolutionary-species phylogenetic-species operational-taxonomic-unit OTU DNA-barcoding molecular-phylogenetics integrative-taxonomy alpha-taxonomy beta-taxonomy gamma-taxonomy monograph revision redescription diagnosis description illustration measurement meristic morphometric allometry ontogeny heterochrony paedomorphosis peramorphosis development embryology larval-development zoea megalopa settlement juvenile immature mature adult subadult gerontic senescence longevity life-span life-history life-history-strategy r-selection K-selection bet-hedging reproductive-effort reproductive-success fitness population demography cohort generation age-structure size-structure stage-structure population-regulation density-dependence density-independence carrying-capacity limiting-factor environmental-gradient habitat-gradient depth-gradient zonation vertical-distribution horizontal-distribution geographic-distribution latitudinal-gradient longitudinal-gradient bathymetric-distribution intertidal-zone subtidal-zone continental-shelf continental-slope abyssal-zone hadal-zone neritic-zone oceanic-zone pelagic-zone benthic-zone demersal-zone epipelagic mesopelagic bathypelagic abyssopelagic hadopelagic supralittoral circalittoral archibenthal bathyal abyssal hadal euphotic dysphotic aphotic photic-zone disphotic-zone aphotic-zone trophic-level primary-producer primary-consumer secondary-consumer tertiary-consumer detritivore scavenger predator herbivore carnivore omnivore parasite commensal mutualist symbiont competitor food-chain trophic-cascade bottom-up-control top-down-control wassefug mesopredator-release trophic-trickle nutrient-cycling energy-flow productivity biomass standing-stock turnover production respiration excretion egestion assimilation efficiency ecological-efficiency trophic-transfer-efficiency Lindeman-efficiency 10%-rule pyramid-of-numbers pyramid-of-biomass pyramid-of-energy ecosystem-function ecosystem-service ecosystem-process biogeochemical-cycle carbon-cycle nitrogen-cycle phosphorus-cycle sulfur-cycle oxygen-cycle hydrogen-cycle mineral-cycle nutrient limiting-nutrient eutrophication oligotrophication hypoxia anoxia acidification warming climate-change global-change anthropogenic-impact pollution contamination habitat-loss habitat-degradation habitat-fragmentation overfishing bycatch invasive-species introduced-species non-native-species alien-species exotic-species range-expansion range-contraction range-shift poleward-shift tropicalization borealization meridionalization deglaciation sea-level-rise coastal-squeeze ocean-acidification ocean-warming deoxygenation marine-heatwave extreme-event disturbance resilience resistance recovery adaptation acclimation plasticity evolutionary-adaptation genetic-adaptation phenotypic-plasticity behavioral-plasticity physiological-plasticity morphological-plasticity life-history-plasticity trade-off constraint limitation bottleneck bottleneck-effect founder-effect genetic-drift gene-flow mutation selection natural-selection sexual-selection artificial-selection directional-selection stabilizing-selection disruptive-selection frequency-dependent-selection density-dependent-selection rare-advantage common-advantage apostatic-selection balancing-selection heterozygote-advantage negative-frequency-dependent-selection positive-frequency-dependent-selection ecological-speciation sympatric-speciation allopatric-speciation parapatric-speciation peripatric-speciation vicariance dispersal colonization establishment invasion naturalization spreading epidemic pandemic enzootic epizootic eradication control protection restoration rehabilitation rewilding de-extinction sustainable-use ecosystem-based-management adaptive-management precautionary-approach ecosystem-approach integrated-management marine-protected-area MPA no-take-zone marine-reserve sanctuary world-heritage-site Ramsar-site important-marine-mammal-area IMMA ecologically-or-biologically-significant-area EBSA vulnerable-marine-ecosystem VME essential-fish-habitat EFH critical-habitat habitat-of-particular-concern habitat-area-of-particular-concern HAPC key-biodiversity-area KBA protected-area conservation-area nature-reserve national-park marine-park aquatic-reserve fishery-reserve species-recovery-plan action-plan management-plan strategic-plan policy legislation regulation convention treaty agreement protocol Memorandum-of-Understanding MoU non-binding-instrument soft-law hard-law customary-international-law jus-cogens erga-omnes common-concern-of-humankind common-heritage-of-mankind precautionary-principle polluter-pays-principle common-but-differentiated-responsibilities intergenerational-equity intragenerational-equity environmental-justice climate-justice ocean-justice blue-economy green-economy circular-economy bioeconomy natural-capital ecosystem-services-valuation payment-for-ecosystem-services PES blue-carbon carbon-sequestration carbon-storage carbon-sink carbon-source greenhouse-gas GHG carbon-dioxide CO2 methane CH4 nitrous-oxide N2O fluorinated-gas F-gas hydrofluorocarbon HFC perfluorocarbon PFC sulfur-hexafluoride SF6 nitrogen-trifluoride NF3 ozone-depleting-substance ODS Montreal-Protocol Paris-Agreement UNFCCC IPCC IPBES IOC UNESCO FAO IMO ISA CBD CMS CITES RAMSAR World-Heritage-Convention UNFSA Straddling-Stocks-Agreement Compliance-Agreement Port-State-Measures-Agreement PSMA IUU-fishing illegal-unreported-unregulated-fishing overcapacity fishing-down-the-food-web fishing-through-the-food-web serial-depletion shifting-baseline baseline reference-point target-reference-point limit-reference-point threshold tipping-point point-of-no-return hysteresis alternative-stable-state regime-shift critical-transition catastrophic-shift smooth-transition adaptive-cycle panarchy resilience-thinking social-ecological-system SES coupled-human-natural-system CHANS human-environment-system HES socio-ecological-system ecosystem-approach-to-fisheries EAF ecosystem-based-fisheries-management EBFM EBM integrated-ecosystem-assessment IEA marine-spatial-planning MSP ocean-zoning marine-planning coastal-zone-management integrated-coastal-zone-management ICZM integrated-maritime-policy IMP blue-growth sustainable-development-goal SDG SDG-14 life-below-water decade-of-ocean-science UN-Ocean-Decade 2030-Agenda Agenda-21 Rio-Declaration Stockholm-Declaration Johannesburg-Plan-of-Implementation World-Summit-on-Sustainable-Development WSSD Rio+20 Rio+30 Earth-Summit UNCED UNCLOS Law-of-the-Sea-Convention Convention-on-the-Law-of-the-Sea high-seas area-beyond-national-jurisdiction ABNJ international-seabed-area the-Area exclusive-economic-zone EEZ territorial-sea contiguous-zone archipelagic-waters internal-waters straight-baseline normal-baseline low-water-line tidal-datum chart-datum depth-contour isobath bathymetry topography morphology geomorphology seafloor seabed benthos nekton plankton neuston pleuston hyperbenthos suprabenthos epibenthos endobenthos infauna epifauna pelagic benthopelagic meroplankton holoplankton zooplankton phytoplankton bacterioplankton virioplankton ichthyoplankton ichthyoplankton-survey egg-survey larval-survey ichthyoplankton-transport larval-transport dispersal-kernel connectivity population-connectivity genetic-connectivity demographic-connectivity larval-pool source-sink-dynamics metapopulation population-structure stock-structure stock-identification fishery-assessment biological-reference-point BRP maximum-sustainable-yield MSY optimal-yield OY maximum-economic-yield MEY maximum-constant-yield MCY equilibrium-yield sustainable-yield surplus-production Schaefer-model Fox-model Pella-Tomlinson-model surplus-production-model analytical-model statistical-catch-at-age-model SCA virtual-population-analysis VPA cohort-analysis catch-curve length-based-model age-based-model stage-based-model size-based-model trait-based-model individual-based-model IBM agent-based-model ABM ecosystem-model end-to-end-model EwE Atlantis OSMOSE InVEST Marxan prioritization systematic-conservation-planning SCP gap-analysis representativeness adequacy effectiveness equity fairness legitimacy compliance enforcement monitoring surveillance observation data-collection sampling survey census index indicator metric variable parameter estimate prediction forecast projection scenario what-if-analysis sensitivity-analysis uncertainty-analysis risk-analysis decision-analysis trade-off-analysis optimization multi-objective-optimization Pareto-front Pareto-optimal non-dominated-solution stakeholder interest-group rights-holder user-group community indigenous-people local-knowledge traditional-knowledge TK traditional-ecological-knowledge TEK citizen-science participatory-science community-based-monitoring CBM co-management joint-management shared-governance adaptive-co-management transboundary-management regional-seas regional-fishery-body RFB regional-fishery-management-organization RFMO arrangement commission council committee working-group expert-group scientific-committee technical-committee compliance-committee dispute-settlement arbitration conciliation mediation negotiation bargaining coalition alliance partnership network platform forum conference meeting session symposium workshop seminar training capacity-building technology-transfer technical-assistance financial-assistance funding grant loan donation collaboration cooperation coordination harmonization standardization best-practice guideline manual handbook code-of-conduct code-of-practice certification eco-label seal-of-approval sustainability-standard marine-stewardship-council MSC aquaculture-stewardship-council ASC friend-of-the-sea global-G.A.P.BRC IFS SQF FSSC-22000 ISO-22000 HACCP GMP SSOP traceability chain-of-custody blockchain digital-traceability electronic-monitoring EM electronic-reporting ER VMS AIS satellite-monitoring remote-sensing earth-observation geographic-information-system GIS global-positioning-system GPS automatic-identification-system vessel-monitoring-system catch-documentation-scheme CDS port-state-measures catch-certification trade-tracking isotope-analysis otolith-microchemistry parasite-tag tagging mark-recapture telemetry acoustic-telemetry satellite-telemetry archival-tag data-storage-tag DST pop-up-satellite-archival-tag PSAT smart-tag biologging bio-telemetry sensor accelerometer magnetometer gyroscope pressure-sensor temperature-sensor light-sensor dissolved-oxygen-sensor salinity-sensor conductivity-sensor pH-sensor chlorophyll-sensor turbidity-sensor acoustic-Doppler-current-profiler ADCP echosounder multibeam-echosounder single-beam-echosounder split-beam-echosounder scientific-echosounder fishing-echosounder sonar side-scan-sonar synthetic-aperture-sonar SAS sub-bottom-profiler seismic-profiler gravimeter bathymetric-lidar airborne-lidar satellite-altimetry radar-altimetry laser-altimetry photogrammetry structure-from-motion SfM underwater-photogrammetry video-analysis image-analysis machine-learning artificial-intelligence AI deep-learning neural-network computer-vision pattern-recognition object-detection instance-segmentation semantic-segmentation classification clustering regression forecasting time-series-analysis spatial-analysis geostatistics kriging inverse-distance-weighting IDW triangulated-irregular-network TIN digital-elevation-model DEM digital-terrain-model DTM digital-surface-model DSM habitat-suitability-model species-distribution-model SDM ecological-niche-model ENM habitat-suitability-index HSI environmental-suitability bioclimatic-envelope climate-envelope fundamental-niche realized-niche potential-distribution actual-distribution range-map distribution-map occurrence-record presence-only-data presence-absence-data abundance-data density-data effort-data detection-probability occupancy-model N-mixture-model distance-sampling line-transect point-transect strip-transect plotless-sampling quadrat transect stratified-random-sampling systematic-sampling cluster-sampling adaptive-cluster-sampling two-phase-sampling double-sampling multi-phase-sampling sampling-design sample-size statistical-power effect-size significance-level confidence-level confidence-interval credible-interval prediction-interval tolerance-interval hypothesis-test null-hypothesis alternative-hypothesis type-I-error type-II-error false-positive false-negative sensitivity specificity accuracy precision recall F1-score ROC-curve AUC model-validation model-verification model-calibration model-selection model-comparison model-averaging ensemble-model multi-model-inference information-criterion AIC AICc BIC DIC WAIC LOOIC cross-validation k-fold-cross-validation leave-one-out-cross-validation bootstrap jackknife permutation-test randomization-test Monte-Carlo-simulation Markov-chain-Monte-Carlo MCMC Bayesian-inference frequentist-inference likelihood posterior-probability prior-probability prior-distribution posterior-distribution conjugate-prior non-informative-prior weakly-informative-prior hierarchical-model mixed-effects-model random-effects-model fixed-effects-model generalized-linear-model GLM generalized-additive-model GAM generalized-linear-mixed-model GLMM generalized-additive-mixed-model GAMM structural-equation-model SEM path-analysis confirmatory-factor-analysis CFA exploratory-factor-analysis EFA principal-component-analysis PCA principal-coordinate-analysis PCoA non-metric-multidimensional-scaling NMDS correspondence-analysis CA detrended-correspondence-analysis DCA redundancy-analysis RDA canonical-correspondence-analysis CCA partial-least-squares PLS orthogonal-partial-least-squares OPLS artificial-neural-network ANN random-forest RF gradient-boosting-machine GBM XGBoost LightGBM CatBoost support-vector-machine SVM k-nearest-neighbor KNN naive-Bayes decision-tree regression-tree classification-tree bagging boosting stacking ensembling voting blending meta-learning transfer-learning domain-adaptation few-shot-learning zero-shot-learning self-supervised-learning unsupervised-learning supervised-learning semi-supervised-learning reinforcement-learning active-learning online-learning incremental-learning lifelong-learning continual-learning federated-learning distributed-learning edge-computing cloud-computing high-performance-computing HPC parallel-computing GPU-computing quantum-computing neuromorphic-computing DNA-computing biological-computing natural-computing swarm-intelligence ant-colony-optimization particle-swarm-optimization genetic-algorithm evolutionary-algorithm differential-evolution simulated-annealing tabu-search variable-neighborhood-search iterated-local-search guided-local-search greedy-randomized-adaptive-search-procedure GRASP scatter-search path-relinking memetic-algorithm hyper-heuristic meta-heuristic optimization-heuristic constructive-heuristic improvement-heuristic local-search neighborhood-search large-neighborhood-search LNS adaptive-large-neighborhood-search ALNS branch-and-bound branch-and-cut branch-and-price column-generation Benders-decomposition Dantzig-Wolfe-decomposition Lagrangian-relaxation surrogate-relaxation dual-ascent primal-dual-method interior-point-method simplex-method revised-simplex-method dual-simplex-method network-simplex-method barrier-method penalty-method augmented-Lagrangian-method sequential-quadratic-programming SQP sequential-linear-programming SLP trust-region-method line-search-method gradient-descent steepest-descent conjugate-gradient quasi-Newton-method Newton-method Gauss-Newton-method Levenberg-Marquardt-method trust-region-reflective-method interior-point-reflective-method active-set-method projected-gradient-method proximal-gradient-method accelerated-gradient-method momentum-method Nesterov-acceleration AdaGrad RMSprop Adam AdamW SGD stochastic-gradient-descent mini-batch-gradient-descent batch-gradient-descent full-gradient-descent variance-reduction SAG SAGA SVRG L-BFGS limited-memory-BFGS BFGS DFP SR1 Nelder-Mead-method Powell's-method Hooke-Jeeves-method pattern-search direct-search derivative-free-optimization black-box-optimization bayesian-optimization Gaussian-process kriging-surrogate response-surface-method RSM polynomial-chaos-expansion PCE sparse-grid sparse-polynomial-approximation low-rank-approximation tensor-decomposition CP-decomposition Tucker-decomposition tensor-train TT hierarchical-Tucker HT matrix-factorization non-negative-matrix-factorization NMF singular-value-decomposition SVD independent-component-analysis ICA factor-analysis latent-variable-model latent-class-model finite-mixture-model hidden-Markov-model HMM state-space-model dynamic-linear-model DLM Kalman-filter particle-filter sequential-Monte-Carlo SMC ensemble-Kalman-filter EnKF unscented-Kalman-filter UKF extended-Kalman-filter EKF Rauch-Tung-Striebel-smoother RTS-smoother forward-backward-algorithm Viterbi-algorithm Baum-Welch-algorithm expectation-maximization EM-algorithm variational-inference variational-Bayes mean-field-approximation loopy-belief-propagation sum-product-algorithm max-product-algorithm junction-tree-algorithm bucket-elimination variable-elimination conditioning cutset-conditioning constraint-satisfaction CSP satisfiability SAT MAX-SAT pseudo-Boolean-optimization integer-linear-programming ILP mixed-integer-linear-programming MILP mixed-integer-nonlinear-programming MINLP quadratic-programming QP quadratically-constrained-quadratic-programming QCQP second-order-cone-programming SOCP semidefinite-programming SDP geometric-programming GP signomial-programming SP difference-of-convex-programming DC-programming complementary-geometric-programming CGP generalized-geometric-programming GGP posynomial monomial signomial polynomial rational-function algebraic-function transcendental-function analytic-function meromorphic-function entire-function holomorphic-function harmonic-function subharmonic-function superharmonic-function plurisubharmonic-function plurisuperharmonic-function convex-function concave-function quasiconvex-function quasiconcave-function log-convex-function log-concave-function geometrically-convex-function multiplicatively-convex-function operator-convex-function matrix-convex-function spectral-function unitarily-invariant-function orthogonally-invariant-function permutation-invariant-function symmetric-function Schur-convex-function Schur-concave-function majorization weak-majorization strong-majorization doubly-stochastic-matrix Birkhoff-polytope permutahedron transportation-polytope network-flow minimum-cost-flow maximum-flow minimum-cut shortest-path longest-path traveling-salesman-problem TSP vehicle-routing-problem VRP capacitated-VRP CVRP VRP-with-time-windows VRPTW pickup-and-delivery-problem PDP dial-a-ride-problem DARP arc-routing-problem ARP Chinese-postman-problem CPP rural-postman-problem RPP location-problem facility-location p-median-problem p-center-problem uncapacitated-facility-location UFL capacitated-facility-location CFL warehouse-location plant-location hub-location median-problem center-problem covering-problem set-covering vertex-covering edge-covering dominating-set independent-set clique graph-coloring chromatic-number clique-number independence-number domination-number matching perfect-matching maximum-matching b-matching f-factor g-factor network-design Steiner-tree Steiner-forest prize-collecting-Steiner-tree k-MST minimum-spanning-tree MST maximum-spanning-tree minimum-arborescence minimum-directed-spanning-tree minimum-Steiner-tree approximation-algorithm approximation-ratio performance-guarantee inapproximability NP-hardness NP-completeness computational-complexity time-complexity space-complexity polynomial-time exponential-time quasi-polynomial-time sub-exponential-time fixed-parameter-tractable FPT W-hierarchy parameterized-complexity kernelization kernel treewidth pathwidth branchwidth cliquewidth rankwidth booleanwidth modularwidth split-decomposition modular-decomposition prime-graph cograph permutation-graph interval-graph chordal-graph perfect-graph comparability-graph co-comparability-graph AT-free-graph claw-free-graph line-graph planar-graph outerplanar-graph series-parallel-graph treewidth-bounded-graph minor-free-graph forbidden-minor forbidden-topological-minor forbidden-induced-subgraph graph-minor-theorem Robertson-Seymour-theorem well-quasi-ordering Wagner's-conjecture Hadwiger's-conjecture Four-Color-Theorem Strong-Perfect-Graph-Theorem Erdős–Faber–Lovász-conjecture Gyárfás–Sumner-conjecture Erdős–Hajnal-conjecture Caccetta–Häggkvist-conjecture Bermond–Thomassen-conjecture Thomassen's-conjecture Tutte's-conjecture Grötzsch's-theorem Brooks'-theorem Vizing's-theorem Shannon's-theorem König's-theorem Kőnig's-line-coloring-theorem Menger's-theorem max-flow-min-cut-theorem Ford-Fulkerson-theorem Edmonds'-matching-theorem Tutte's-theorem Petersen's-theorem Hall's-marriage-theorem Dilworth's-theorem Mirsky's-theorem Sperner's-theorem Erdős–Ko–Rado-theorem Kruskal–Katona-theorem Lovász's-perfect-graph-theorem Chudnovsky's-strong-perfect-graph-theorem Seymour's-decomposition-theorem Robertson–Seymour–Thomas-theorem Heawood-conjecture Ringel–Youngs-theorem Map-Color-Theorem Appel–Haken-proof Robertson–Seymour–Sanders–Thomas-proof computer-assisted-proof formal-proof interactive-theorem-proving proof-assistant Coq Isabelle HOL HOL-Light Lean Agda Twelf Mizar Metamath automated-theorem-proving SAT-solver SMT-solver model-checker temporal-logic CTL LTL CTL*modal-mu-calculus fixed-point-logic description-logic OWL RDF SPARQL knowledge-graph ontology semantic-web linked-data open-data FAIR-data findable accessible interoperable reusable data-management-plan DMP metadata provenance data-quality data-curation data-preservation data-archiving data-repository institutional-repository disciplinary-repository general-repository figshare Zenodo Dryad GBIF OBIS WoRMS Catalogue-of-Life COL ITIS NCBI BOLD iNaturalist eBird eButterfly iDigBio ALA AVH BIE BISON Map-of-Life MOL Movebank OTN SAHFOS CPR ICES NAFO NEAFC SEAFO WCPFC IATTC ICCAT IOTC CCSBT CCAMLR GFCM CWP CWP-15 CWP-16 CWP-17 CWP-18 CWP-19 CWP-20 CWP-21 CWP-22 CWP-23 CWP-24 CWP-25 CWP-26 CWP-27 CWP-28 CWP-29 CWP-30 CWP-31 CWP-32 CWP-33 CWP-34 CWP-35 CWP-36 CWP-37 CWP-38 CWP-39 CWP-40 CWP-41 CWP-42 CWP-43 CWP-44 CWP-45 CWP-46 CWP-47 CWP-48 CWP-49 CWP-50 CWP-51 CWP-52 CWP-53 CWP-54 CWP-55 CWP-56 CWP-57 CWP-58 CWP-59 CWP-60 CWP-61 CWP-62 CWP-63 CWP-64 CWP-65 CWP-66 CWP-67 CWP-68 CWP-69 CWP-70 CWP-71 CWP-72 CWP-73 CWP-74 CWP-75 CWP-76 CWP-77 CWP-78 CWP-79 CWP-80 CWP-81 CWP-82 CWP-83 CWP-84 CWP-85 CWP-86 CWP-87 CWP-88 CWP-89 CWP-90 CWP-91 CWP-92 CWP-93 CWP-94 CWP-95 CWP-96 CWP-97 CWP-98 CWP-99 CWP-100 CWP-101 CWP-102 CWP-103 CWP-104 CWP-105 CWP-106 CWP-107 CWP-108 CWP-109 CWP-110 CWP-111 CWP-112 CWP-113 CWP-114 CWP-115 CWP-116 CWP-117 CWP-118 CWP-119 CWP-120 CWP-121 CWP-122 CWP-123 CWP-124 CWP-125 CWP-126 CWP-127 CWP-128 CWP-129 CWP-130 CWP-131 CWP-132 CWP-133 CWP-134 CWP-135 CWP-136 CWP-137 CWP-138 CWP-139 CWP-140 CWP-141 CWP-142 CWP-143 CWP-144 CWP-145 CWP-146 CWP-147 CWP-148 CWP-149 CWP-150 CWP-151 CWP-152 CWP-153 CWP-154 CWP-155 CWP-156 CWP-157 CWP-158 CWP-159 CWP-160 CWP-161 CWP-162 CWP-163 CWP-164 CWP-165 CWP-166 CWP-167 CWP-168 CWP-169 CWP-170 CWP-171 CWP-172 CWP-173 CWP-174 CWP-175 CWP-176 CWP-177 CWP-178 CWP-179 CWP-180 CWP-181 CWP-182 CWP-183 CWP-184 CWP-185 CWP-186 CWP-187 CWP-188 CWP-189 CWP-190 CWP-191 CWP-192 CWP-193 CWP-194 CWP-195 CWP-196 CWP-197 CWP-198 CWP-199 CWP-200
Stenorhynchus seticornis
Yellowline Arrow Crab, Arrow Crab
Stenorhynchus seticornis is a marine crab commonly known as the yellowline arrow crab. It inhabits shallow subtidal zones of the western Atlantic Ocean, from North Carolina to Brazil. The species is recognized by its triangular body, elongated pointed rostrum, and long thin legs. It is nocturnal, territorial, and frequently associated with sea anemones, particularly Lebrunia danae.
marine nocturnal coral-reef commensal aquarium-trade western-Atlantic