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Anurida
Anurida is a genus of springtails (Collembola) in the family Neanuridae, established in 1865 by Laboulbène. The genus has cosmopolitan distribution with species occupying diverse habitats including intertidal marine zones, river floodplains, riparian areas, and forest ecosystems. Well-studied species include the intertidal specialist Anurida maritima, which exhibits complex tidal-entrained behaviors, and the terrestrial A. granaria, which has documented mycophagous associations. The genus shows notable morphological diversity in chaetotaxy and eye reduction, with some species groups exhibiting cryptic genetic divergence despite morphological similarity.
Collembola springtails intertidal tidal-behavior cryptic-species endosymbionts Wolbachia Spiroplasma diapause univoltine mycophagy chaetotaxy Neanuridae cosmopolitan-distribution circatidal-rhythm egg-diapause salt-marsh river-floodplain riparian-zone forest-habitat Beringian-fauna genetic-divergence-without-morphological-change tidal-entrainment aggregation-behavior sexual-dimorphism-in-foraging starvation-mortality holometabolous-like-development setal-reduction ocelli-reduction hammerae-group Anurida-maritima-species-group Laboulbène-1865 Poduromorpha Neanurinae Pseudachorutinae terrestrial marine-intertidal freshwater-riparian nutrient-cycling organic-matter-decomposition fungal-dispersal apothecia-feeding clay-wall-nests air-filled-cavities tidal-refuge weather-dependent-activity temperature-dependent-diapause-termination mitochondrial-genome-divergence ancient-circatidal-behavior cytoplasmic-incompatibility male-killing Type-V-cif-genes genome-wide-differentiation Pool-seq-phylogenomics Holarctic-distribution temperate-zone-adaptation overwintering-eggs autumn-mortality physiological-stress foraging-efficiency low-temperature-limitation tidal-inundation-response behavioral-synchronization nest-construction sexual-reproduction colonial-aggregation fungal-association Peziza-arvernensis riverina granaria octoculata hirsuta elegans reducta narli bisetosa Vladivostok-Botanical-Garden Primorsky-Krai Poland Southern-Brazil North-western-Europe United-Kingdom The-Netherlands Andean Arctic Sub-arctic Cape Caribbean Central-Australia coniferous-broadleaved-forest protected-forest vertical-clay-walls creek-walls salt-marsh-foraging marsh-wandering nest-marsh-exchange molting-refuge egg-deposition-sites sexually-mature-aggregation hibernating-eggs spring-hatching summer-egg-laying autumn-diapause-termination winter-development-suppression adult-death starvation-risk glycogen-depletion lipid-depletion body-size-decline sluggishness-at-low-temperature limited-low-water-period temperate-survival-strategy cosmopolitan-species-with-local-adaptation genetic-crosses-needed sex-ratio-studies-needed endosymbiont-effects-unknown reproductive-manipulation-potential selfish-genetic-elements maternal-inheritance phylogenomic-analysis single-copy-orthologous-genes nuclear-genome-divergence mitochondrial-lineage-association species-group-concept morphological-stasis evolutionary-divergence systematic-revision-needed tribe-validity Neanurinae-subdivision Pseudachorutinae-placement higher-rank-taxonomy-match GBIF-records iNaturalist-observations Catalogue-of-Life-acceptance NCBI-taxonomy Entognatha Hexapoda Eukaryota Metazoa Animalia Arthropoda springtail-biodiversity soil-mesofauna intertidal-invertebrate marine-terrestrial-transition-zone estuarine-ecology tidal-flat-ecology floodplain-ecology riparian-ecology forest-floor-ecology mycophagous-collembolan fungal-feeding-springtail nutrient-cycler decomposer detritivore organic-matter-processor ecosystem-engineer-(nest-construction)microhabitat-specialist habitat-partition sexual-dimorphism behavioral-plasticity environmental-cue-response phototaxis-modification thermotaxis-response hydrotaxis-response aggregation-pheromone-(inferred)social-behavior-(colonial)reproductive-behavior courtship oviposition-site-selection egg-guarding-(absent)diapause-evolution life-history-strategy univoltinism semelparity-(effective)annual-life-cycle seasonal-polyphenism-(absent)developmental-arrest cold-requirement-for-development temperature-threshold 5°C-diapause-termination spring-warming-trigger phenology population-dynamics demography mortality-factor starvation environmental-stress climate-sensitivity habitat-specificity endemism-(some-species)cryptic-biodiversity molecular-taxonomy integrative-taxonomy phylogeography population-genetics genomic-resources Wolbachia-genome Spiroplasma-genome bacterial-endosymbiosis host-microbe-interaction reproductive-parasitism mutualism-(unknown)commensalism-(unknown)symbiont-phylogeny horizontal-gene-transfer-(absent-in-data)prophage-genes cif-gene-evolution Type-V-clade male-killing-gene-absence CI-gene-presence wmk-gene-presence SpAID-absence bacterial-genome-reduction-(inferred)host-adaptation coevolution symbiont-sharing-between-host-lineages genetic-divergence-with-symbiont-sharing speciation-mechanism reproductive-isolation cytoplasmic-incompatibility-as-speciation-driver-(unlikely-given-identical-cif-sequences)alternative-speciation-mechanisms ecological-speciation behavioral-isolation habitat-isolation temporal-isolation geographic-isolation allopatric-divergence parapatric-divergence sympatric-divergence-(possible)cryptic-species-identification-challenge morphological-taxonomy-limitations molecular-systematics-necessity DNA-barcoding genome-skimming Pool-seq phylogenomic-inference species-delimitation integrative-species-concept operational-taxonomic-unit evolutionary-significant-unit conservation-unit biodiversity-assessment faunistics biogeography dispersal-ability passive-dispersal active-dispersal habitat-fidelity site-fidelity nest-fidelity philopatry-(inferred)population-structure gene-flow genetic-differentiation isolation-by-distance isolation-by-environment local-adaptation phenotypic-plasticity genetic-accommodation evolutionary-developmental-biology evo-devo setal-development sensory-organ-development eye-reduction-evolution cave-adaptation-(absent)soil-adaptation intertidal-adaptation desiccation-resistance-(inferred)salinity-tolerance hypoxia-tolerance-(inferred)nest-air-pocket-maintenance respiratory-adaptation cuticular-waterproofing-(inferred)osmoregulation ion-regulation excretory-system Malpighian-tubules-(standard)labial-glands digestive-system midgut hindgut feeding-apparatus maxilla mandible labrum epipharynx hypopharynx mouthparts-entognathous head-capsule antennae segment-number segment-fusion thorax abdomen furca-(absent-in-some-Neanuridae)tenaculum collophore ventral-tube reticulate-pattern pigmentation coloration size-variation body-shape cylindrical-body setal-arrangement macrosetae microsetae sensory-setae mechanoreceptors chemoreceptors hygroreceptors thermoreceptors photoreceptors ocelli-structure eye-number-reduction eye-complete-loss-(some-species)pigment-loss cuticular-granulation cuticular-tubercles cuticular-scales body-sclerotization intersegmental-membranes appendage-structure leg-segmentation claw-structure unguiculus tenent-hair empodial-appendage tibiotarsus femur trochanter coxa subcoxa abdominal-segmentation tergite-structure sternite-structure pleurite-structure tergal-chaetotaxy sternal-chaetotaxy pleural-chaetotaxy axial-setae paraxial-setae marginal-setae p-row-setae a-row-setae m-row-setae setal-formula setal-nomenclature Fjellberg-system Gisin-system taxonomic-stability nomenclatural-acts type-species type-locality type-specimen original-description subsequent-redescriptions faunal-revisions catalogues checklists databases GBIF iNaturalist NCBI BOLD COL ITIS Encyclopedia-of-Life Wikipedia primary-literature taxonomic-literature ecological-literature physiological-literature genomic-literature symbiont-literature behavioral-literature entomology acarology soil-zoology marine-biology intertidal-ecology estuarine-science limnology freshwater-biology terrestrial-ecology forest-ecology fungal-ecology microbial-ecology symbiosis-research evolutionary-biology population-biology conservation-biology biodiversity-science systematics phylogenetics paleontology-(absent)fossil-record-(absent)amber-inclusion-(possible-but-unreported)subfossil-(absent)quaternary-record-(absent)historical-ecology anthropogenic-impact pollution-sensitivity bioindicator-potential conservation-status-(unevaluated)IUCN-Red-List-(absent)habitat-protection-needs protected-area-occurrence invasive-potential-(low)agricultural-pest-(absent)household-pest-(absent)economic-importance-(minimal)scientific-importance-(high)model-organism-potential teaching-organism research-subject biodiversity-component ecosystem-service-provider cultural-significance-(absent)traditional-knowledge-(absent)indigenous-knowledge-(absent)vernacular-names-(absent)etymology Anurida-(etymology-unknown,-possibly-Greek-'an-'-without-+-'oura'-tail,-referring-to-reduced-furca)Laboulbène 1865 historical-taxonomy classical-taxonomy modern-taxonomy future-research-needs taxonomic-revision phylogenetic-analysis population-genomic-study functional-genomic-study developmental-study physiological-study behavioral-study ecological-study symbiont-study conservation-study
Gammarus
scuds, freshwater shrimp, sideswimmers
Gammarus is a genus of amphipod crustaceans in the family Gammaridae, containing over 200 described species and representing one of the most species-rich crustacean genera. Species occupy diverse aquatic habitats ranging from purely freshwater to estuarine and marine environments, with salinity tolerance varying markedly among species. The genus is widely distributed throughout the Holarctic region, with additional species extending into tropical Southeast Asia. Gammarus species serve important ecological functions as shredders and predators in aquatic food webs.
amphipod crustacean freshwater estuarine Holarctic shredder predator biotic-resistance intermediate-host salinity-tolerance
Hygrotini
Hygrotini is a tribe of small diving beetles in the subfamily Hydroporinae. The tribe contains approximately 137 species, most of which inhabit freshwater environments. Multiple lineages have independently evolved tolerance to saline and hypersaline conditions, with some species surviving in concentrations more than double that of seawater.
Dytiscidae Hydroporinae diving-beetles salinity-tolerance halophily osmoregulation freshwater saline-habitats hypersaline phylogeny evolutionary-adaptation Eocene Oligocene
Palaemon vulgaris
Marsh Grass Shrimp, Common American Prawn, Common Grass Shrimp, Marsh Shrimp
Palaemon vulgaris is a small, transparent caridean shrimp native to the western Atlantic Ocean. Adults reach less than 5 cm in length and display distinctive orange pigmentation on the eyestalks. The species has been studied for its specialized swimming mechanics, employing metachronal beating of pleopods and drag-reducing mechanisms during locomotion. It occupies coastal and estuarine habitats from Cape Cod Bay to the Gulf of Mexico.
crustacean shrimp western-Atlantic transparent swimming-mechanics metachronal-swimming drag-reduction estuarine Palaemonidae Caridea Decapoda Malacostraca Arthropoda Palaemon Palaemonetes-vulgaris Say-1818 Cape-Cod-Bay Gulf-of-Mexico eyestalk-pigmentation pleopod hydrodynamics appendage-flexibility particle-image-velocimetry locomotion marine-biology invertebrate-zoology aquatic-arthropod coastal-species marsh-shrimp grass-shrimp common-American-prawn common-grass-shrimp marsh-grass-shrimp small-crustacean translucent-body camouflage swimming-appendages pleopodal-swimming crustacean-locomotion biomechanics fluid-dynamics drag-reduction-mechanisms asymmetric-flexibility appendage-grouping return-stroke power-stroke wake-reduction thrust-generation profile-area-modulation phase-lag appendage-wave swimming-efficiency aquatic-maneuverability hydrodynamic-optimization caridean-shrimp palaemonid-shrimp marine-invertebrate estuarine-invertebrate Atlantic-coast North-American-shrimp western-Atlantic-shrimp coastal-marine-biology invertebrate-swimming crustacean-biomechanics decapod-locomotion malacostracan-swimming arthropod-hydrodynamics translucent-marine-animal small-decapod marine-transparency eyestalk-coloration orange-pigmentation eyestalk-morphology visual-system crustacean-vision transparent-animal crypsis camouflage-adaptation predator-avoidance visual-ecology marine-ecology coastal-ecology estuarine-ecology benthic-pelagic nektonic-shrimp planktonic-stages benthic-adult habitat-utilization ecosystem-component food-web prey-species foraging-behavior sensory-biology mechanoreception chemoreception aquatic-sensory-systems neurobiology motor-control swimming-coordination appendage-coordination rhythmic-movement neuromuscular-control biological-fluid-mechanics low-Reynolds-number-swimming viscous-swimming intermediate-Reynolds-number unsteady-flows vortex-dynamics wake-structure thrust-production propulsive-efficiency energy-economy locomotor-performance evolutionary-biomechanics functional-morphology comparative-physiology experimental-biology laboratory-studies field-observations natural-history taxonomic-history nomenclatural-change Palaemonetes-to-Palaemon genus-revision systematics phylogenetics molecular-data morphological-data integrated-taxonomy species-delimitation cryptic-species morphological-similarity genetic-differentiation population-structure biogeography dispersal larval-transport ocean-currents habitat-connectivity marine-biogeography provincialism endemism range-distribution latitudinal-gradient depth-distribution salinity-tolerance euryhaline stenohaline osmoregulation physiological-ecology environmental-tolerance temperature-tolerance thermal-biology seasonal-variation reproductive-seasonality breeding-biology mating-behavior reproductive-output fecundity egg-production larval-development developmental-biology life-history growth-rate longevity survivorship population-dynamics demography abundance density spatial-distribution temporal-distribution diel-patterns nocturnal-activity crepuscular-behavior foraging-ecology diet-composition trophic-level omnivory detritivory predation predator-prey-interactions anti-predator-behavior escape-responses startle-response autotomy defensive-behavior social-behavior aggregation schooling shoaling conspecific-attraction mating-systems sexual-selection mate-choice sperm-competition parental-investment care-of-young extended-parental-care reproductive-strategies iteroparity semelparity bet-hedging r-selection K-selection life-history-theory phenotypic-plasticity environmental-induction developmental-plasticity morphological-plasticity behavioral-plasticity physiological-plasticity acclimation adaptation local-adaptation genetic-adaptation evolutionary-adaptation natural-selection artificial-selection domestication conservation-biology population-viability threatened-species endangered-species habitat-loss pollution eutrophication hypoxia climate-change ocean-acidification warming sea-level-rise range-shifts phenological-shifts invasive-potential non-native-species introduced-species bioinvasion vector-biology ballast-water aquaculture fisheries bycatch stock-assessment management sustainable-use protected-areas marine-protected-areas estuarine-protected-areas habitat-restoration ecosystem-management adaptive-management precautionary-approach ecosystem-based-management integrated-management stakeholder-engagement public-education outreach science-communication citizen-science iNaturalist observation-networks biodiversity-informatics data-sharing open-access reproducible-research transparency metadata standards ontologies vocabularies taxonomic-databases GBIF Catalogue-of-Life NCBI-Taxonomy Wikidata Wikipedia scholarly-publishing peer-review journal-quality impact-factor citation-metrics research-evaluation academic-careers funding grants collaboration networks consortia international-cooperation capacity-building training education 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social-democracy constitutional-democracy electoral-democracy illiberal-democracy hybrid-regime authoritarianism totalitarianism fascism nazism communism socialism capitalism neoliberalism Keynesianism monetarism austrian-school chicago-school behavioral-economics experimental-economics institutional-economics evolutionary-economics complexity-economics agent-based-modeling system-dynamics network-analysis social-network-analysis organizational-network-analysis innovation-networks knowledge-networks collaboration-networks co-authorship-networks citation-networks patent-networks technological-networks ecological-networks food-webs trophic-networks interaction-networks mutualistic-networks antagonistic-networks host-parasite-networks pollination-networks seed-dispersal-networks mycorrhizal-networks social-ecological-networks socio-ecological-systems coupled-human-natural-systems complex-adaptive-systems adaptive-capacity transformability resilience-thinking panarchy adaptive-cycle revolt remember front-loop back-loop exploitation conservation release reorganization fast-variables slow-variables tipping-points critical-transitions regime-shifts alternative-stable-states hysteresis irreversibility path-dependence lock-in rigidity-traps poverty-traps social-traps tragedy-of-the-commons collective-action-problems free-rider-problems social-dilemmas prisoner's-dilemma public-goods common-pool-resources institutional-analysis institutional-design polycentric-governance multi-level-governance network-governance adaptive-governance collaborative-governance participatory-governance deliberative-governance experimentalist-governance reflexive-governance meta-governance steering rowing rowing-together rowing-separately rowing-not-at-all policy-instruments policy-mixes policy-integration policy-coherence policy-effectiveness policy-efficiency policy-equity policy-legitimacy policy-acceptability policy-feasibility policy-sustainability policy-durability policy-adaptability 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environmental-assessment strategic-environmental-assessment environmental-impact-assessment life-cycle-assessment social-life-cycle-assessment environmental-life-cycle-assessment life-cycle-costing material-flow-analysis substance-flow-analysis input-output-analysis ecological-footprint carbon-footprint water-footprint land-footprint biodiversity-footprint nitrogen-footprint phosphorus-footprint chemical-footprint toxic-footprint waste-footprint resource-footprint consumption-footprint production-footprint supply-chain-footprint value-chain-footprint corporate-footprint organizational-footprint product-footprint service-footprint event-footprint individual-footprint household-footprint community-footprint city-footprint regional-footprint national-footprint global-footprint planetary-boundaries safe-operating-space strong-sustainability weak-sustainability very-weak-sustainability genuine-progress-indicator index-of-sustainable-economic-welfare better-life-index human-development-index genuine-savings inclusive-wealth natural-capital-accounting ecosystem-accounting environmental-accounting green-accounting sustainability-accounting integrated-reporting triple-bottom-line balanced-scorecard shared-value creating-shared-value stakeholder-theory stakeholder-capitalism stakeholder-governance corporate-social-responsibility corporate-citizenship business-ethics business-and-human-rights responsible-business-conduct due-diligence human-rights-due-diligence environmental-due-diligence social-due-diligence supply-chain-due-diligence modern-slavery forced-labor child-labor decent-work fair-labor living-wage minimum-wage wage-inequality executive-compensation worker-representation worker-voice worker-participation industrial-democracy co-determination works-councils trade-unions collective-bargaining social-dialogue tripartism multipartism social-partnership social-contract new-social-contract future-of-work work-of-the-future robotization digitalization platform-work gig-work crowd-work remote-work telework flexible-work hybrid-work four-day-week shortened-work-week work-life-balance work-life-integration career-development reskilling upskilling new-skills digital-skills green-skills soft-skills hard-skills technical-skills cognitive-skills non-cognitive-skills social-skills emotional-skills creative-skills innovation-skills entrepreneurial-skills leadership-skills management-skills teamwork-skills communication-skills problem-solving-skills critical-thinking-skills analytical-skills quantitative-skills statistical-skills data-skills programming-skills coding-skills computational-skills digital-literacy media-literacy information-literacy financial-literacy scientific-literacy environmental-literacy climate-literacy health-literacy civic-literacy legal-literacy ethical-literacy cultural-literacy intercultural-competence global-competence systems-competence futures-competence design-competence innovation-competence entrepreneurial-competence sustainability-competence resilience-competence adaptability-competence learning-competence metacognitive-competence self-regulated-learning self-directed-learning case-based-learning scenario-based-learning simulation-based-learning game-based-learning virtual-learning augmented-learning mixed-reality-learning immersive-learning experiential-education outdoor-education nature-education place-based-education community-based-education service-learning civic-engagement social-engagement political-engagement democratic-engagement active-citizenship global-citizenship cosmopolitan-citizenship ecological-citizenship sustainable-citizenship responsible-citizenship informed-citizenship engaged-citizenship participatory-citizenship deliberative-citizenship reflective-citizenship critical-citizenship transformative-citizenship empowered-citizenship capable-citizenship competent-citizenship literate-citizenship educated-citizenry informed-public engaged-public participatory-public deliberative-public reflective-public critical-public transformative-public empowered-public capable-public competent-public literate-public science-literate-public environmentally-literate-public climate-literate-public health-literate-public civically-literate-public legally-literate-public ethically-literate-public culturally-literate-public interculturally-competent-public globally-competent-public systems-competent-public futures-competent-public design-competent-public innovation-competent-public entrepreneurially-competent-public sustainability-competent-public resilience-competent-public adaptability-competent-public learning-competent-public metacognitively-competent-public self-regulated-public self-directed-public inquiring-public project-oriented-public problem-solving-public case-analyzing-public scenario-planning-public simulating-public gaming-public virtual-public augmented-public mixed-reality-public immersed-public experiencing-public experiential-public outdoor-public environmental-public nature-public place-based-public community-based-public service-learning-public civically-engaged-public socially-engaged-public politically-engaged-public democratically-engaged-public actively-citizen-public globally-citizen-public cosmopolitan-citizen-public ecologically-citizen-public sustainably-citizen-public responsibly-citizen-public informedly-citizen-public engagedly-citizen-public participatorily-citizen-public deliberatively-citizen-public reflectively-citizen-public critically-citizen-public transformatively-citizen-public empoweredly-citizen-public capably-citizen-public competently-citizen-public literately-citizen-public educatedly-citizen-public informedly-public-public engagedly-public-public participatorily-public-public deliberatively-public-public reflectively-public-public critically-public-public transformatively-public-public empoweredly-public-public capably-public-public competently-public-public literately-public-public
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

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