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Pacifastacus leniusculus
Signal Crayfish
The signal crayfish is a large North American freshwater crayfish introduced to Europe in the 1960s to replace declining native fisheries. It has become one of the most ecologically impactful invasive decapods in Europe, outcompeting native crayfish and serving as a carrier of crayfish plague (Aphanomyces astaci). The species establishes self-sustaining populations rapidly, with six age cohorts documented within a few years of introduction. It shows sex- and size-specific coloration patterns, with males displaying more saturated and brighter ventral claw surfaces than females, suggesting a role in intraspecific communication.
invasive-species crayfish-plague-carrier decapod freshwater-crustacean conservation-concern species-of-Union-concern early-detection-rapid-response ark-sites ecosystem-engineer bioaccumulation sexual-dimorphism nocturnal-activity invasion-gradient trapping electrofishing eradication Mediterranean-invasion headwater-threat native-crayfish-displacement fisheries-introduction 1960s-introduction Europe Japan California-native Pacifastacus Astacidae Decapoda Malacostraca Arthropoda Aphanomyces-astaci white-clawed-crayfish signal-crayfish control-planning removal-actions catch-per-unit-effort color-variation carotenoids camouflage conspicuousness intraspecific-communication elemental-accumulation contaminant trophic-level macroinvertebrate plant-detritus riffle stream river lake tributary invasion-front core-population exploratory-behavior migration-patterns ontogenetic-color-change kick-sampling detection-protocol false-negative Catalonia Italy Portugal Spain Poland Scandinavia British-Isles Segura-River Clitunno-River Valla-stream Rabaçal-River Fosso-Vecchio Union-concern LIFE-IMAGINE eradication-attempt biosecurity pathway-action-plans INNS-inspectorate environmental-DNA eDNA host-pathogen-dynamics conservation-translocation ark-site aggregates-levy environment-agency BBC-wildlife-fund defra habitats-directive favourable-conservation-status unfavourable-bad extinction-risk funding-cuts ecosystem-services keystone-species woodland pollination decomposition nutrient-cycling predation water-purification citizen-science ex-situ-conservation-rearing zoos aquaria Fen-Raft-Spider Pond-Mud-Snail Large-Marsh-Grasshopper Freshwater-Pearl-Mussel Marbled-White-Butterfly Small-Skipper climate-change assisted-colonization range-margin biotic-response abiotic-driver warming pollution eutrophication functional-trait thermal-limit embryogenesis competitive-advantage alien-aquatic-species artificial-light-at-night nutrient-enrichment brown-trout biological-control clearance-rate parasite-load sympatry global-invader predatory-interaction experimental-approach epiphytic-algae submerged-plant-community molecular-tools informatics social-media pooled-sampling integrative-taxonomy hybrid bryozoan cost-efficient-methodology policy-effectiveness legislative-tools LIFE-INVASAQUA networking prevention awareness marine-protected-area citizen-science-data non-native-freshwater-fish knowledge-gaps invasive-alien-freshwater-plants naturalised-plants aquatic-habitats pot-plants horticulture New-Guinea-flatworm Partula-tree-snails Lob-worm Lumbricus-terrestris Harlequin-ladybird Oak-processionary-moth New-Zealand-flatworm Australian-flatworm Lily-beetle Rosemary-leaf-beetle Spanish-slug Girdled-snail Australian-landhopper Light-brown-apple-moth Asian-hornet Argentine-ant Linepithema-humile Vespa-velutina ash-dieback Hymenoscyphus-fraxineus Floating-Pennywort Giant-Hogweed Chinese-Mitten-Crab Eriocheir-sinensis Ballast-Water-Convention Office-for-Environmental-Protection Environmental-Improvement-Plan Global-Biodiversity-Framework delisting listing rapid-response Great-Britain-Non-native-Species-Strategy Nature-2030 Wildlife-and-Countryside-Link Buglife invertebrate conservation reintroduction reinforcement assisted-colonisation habitat-management genetic-diversity donor-stock stakeholder-collaboration Natural-England eNGO landowner public-engagement media-attention tabloid sensationalism spider size-of-rats Marvellous-Mud-Snails-Cornwall Citizen-Zoo Hop-of-Hope volunteer ex-situ-rearing long-life-cycle glochidia salmonid-fish-host Freshwater-Biology-Association juvenile-mussel habitat-restoration micro-habitat Field-Cricket Wart-biter-Bush-cricket Barberry-Carpet-Moth Marsh-Fritillary-Butterfly Fisher's-Estuarine-Moth Southern-Damselfly White-faced-Darter-Dragonfly Pine-Hoverfly Dark-bordered-Beauty-Moth Medicinal-Leech Tadpole-Shrimp Netted-Carpet-Moth Ladybird-Spider Narrow-headed-Ant Cumbria Dorset Devon microhabitat low-mobility natural-colonization short-haired-bumblebee Bombus-subterraneus sub-optimal-management Barberry-bush Paul-Waring Benoit-Guénard conservation-funding vertebrate-bias invertebrate-neglect beaver Castor-fiber pine-marten Martes-martes bird-of-prey Large-Blue-Butterfly Phengaris-arion Chequered-Skipper Carterocephalus-palaemon mainland-Europe national-reintroduction local-reintroduction donor-population receptor-site county 400-m isolated-habitat England-Species-Reintroduction-Task-Force Karim-Vahed half-a-century diverse-species logistically-easier guidelines code government habitat-conditions site-conditions targeted-habitat-management mobility recovery unsuccessful-case lack-of-genetic-diversity optimal-management establishment-failure care knowledge funding-allocation PNAS threatened-species 80%6%species-numbers imbalance legislation wild-release high-profile main-image Decticus-verrucivorus Dr-Sarah-Henshall share Facebook LinkedIn Trinity-Audio tweet NEOBIOTA-2024 Lisbon 421-participants 47-countries invasion-science aquatic-studies marine freshwater oral-session poster workshop NeoBiota-Special-Issue editorial Pedro-Anastácio Filipe-Ribeiro Paula-Chainho 23-papers five-themes 100th-issue ZooKeys digital-taxonomy environmental-stressor invasion-success salinity sea-level-rise Alternanthera-philoxeroides stress-tolerance avoidance escape Gonçalves physiological-performance Callinectes-sapidus climate-warming Phymactis-papillosa environmental-tolerance ecological-impact Portuguese-intertidal synergistic-effect Zhang ecological-interaction invasion-impact population-dynamics Salmo-trutta Matos bivalve capture-efficiency natural-seston Cabral Eupercaria Tkachenko global-aquatic-invader Reshetnikov Pontederia-crassipes Pistia-stratiotes Shen detection monitoring surveillance early-detection Dias Xenopus-laevis pooled-eDNA Everts Squalius Gkenas Chilean-SE-Pacific Rech management policy legislative-tool EU-policy sectoral-impact Magliozzi freshwater-turtle Rato Carosi habitat-use trapping-efficiency hypersaline-lagoon Herrero-Reyes Iberian-Peninsula López-Cañizares African-marine-protected-area global-database Ackland Indian-freshwater-fish evidence-gap Kumar European-freshwater-plant ecosystem-impact Di-Lernia global-synthesis naturalised-plant aquatic-habitat Kortz interdisciplinarity translational-relevance issue-4930 Bluesky scholarly-publishing ecology invasion-ecology aquatic-ecosystem flatworm snail gang-attack extinction pot-plant soil-sterilization fumigation hot-water-immersion biosecurity-measure international-trade Hirudo-medicinalis Neil-Phillips Steven-Falk Sarah-Henshall omphiscola-glabra Cornwall Scotland Blera-fallax Epione-vespertaria Triops-cancriformis Eustroma-reticulatum Eresus-sandaliatus Formica-exsecta Gryllus-campestris Decticus-verrucivorous Pareulype-berberata Euphydryas-aurinia Margaritifera-margaritifera Gortyna-borelii-lunata Dolomedes-plantarius Coenagrion-mercuriale Leucorrhinia-dubia Stethophyma-grossum Melanargia-galathea Thymelicus-sylvestris Formica-rufa Kielder-Forest Northumberland Liz-Oldring Stephen-Wills Durham-University climate-suitability limited-funding biased-funding vertebrate nature-positive-trade 2024-General-Election Manifesto-for-Bugs seven-actions commitments halting-nature-loss reversing-invertebrate-decline Andrew-Whitehouse South-West-Manager Lord-De-Mauley wildlife-minister mineral-extraction Treasury George-Entwistle 50%-cut badger-cull river-dredging £100K £12.75 £420 £1,616 2012 2014 21-projects 2-projects reporting Bedstraw-hawk-moth national-pride leadership David-Smith Social-Change-and-Advocacy-Officer Lisa-Manning Policy-and-Engagement-Officer February-2024 GB-Non-Native-Species-Strategy one-year-anniversary measurability timeline off-track 2030 time-lag establishment Red-Imported-Fire-Ant Solenopsis-invicta world's-worst-invasive-species PaPs draft-form consultation-delay 2023-State-of-Nature-Report Environmental-Audit-Committee £6-million animal-health plant-health resourcing long-term-future slipped-timelines inefficient-process fully-resourced-implementation-plans general-election manifesto smallest-creatures foundations healthy-environment ecosystem-function nature's-decline action commitment England-Manager deliberate-movement release wild conservation-purpose feathered furred multitude large-scale 1980s 1990s 2018 England small-size small-scale region 2005 2007 2008 2010-2015 2009 2010 2019 2022 2023 isolated high-reproductive-potential cost-effective zoo aquarium collaboration ten-different-zoos thousands spiderlings four-new-populations Norfolk Suffolk media-response 2024 headline homeowner urgent-warning relatively-easy-to-rear local-schools colleges volunteers small-aquaria 500-snails four-new-sites 6,000 47-volunteers long-complex-life-cycle long-lived many-years 50,000 specialised-facilities hundreds juvenile-mussels ageing-populations Northern-England natural-range conservation-status 2000 climatically-suitable nine-years pest-species Forestry-England Wood-Ant keystone-woodland-species rescue immediate-danger Austropotamobius-pallipes North-American-Signal-Crayfish Pacifastacus-leniusculus outcompetes fungal Crayfish-Plague susceptible successful-reintroduction rigorous-planning appropriate-guidelines reintroduction-code natural-habitat restoration micro-habitat-requirements life-cycle-stage conservation-tool-kit targeted-habitat-restoration mobile-species species-specialist public 2010s 2004 thousands-of-caterpillars multiple-attempts public-attention vertebrate-relative 2025 opposite-pattern celebration
Polistes dominula
European Paper Wasp
Polistes dominula is a highly successful invasive social wasp native to Eurasia that has established populations across North America, South America, New Zealand, South Africa, and other regions. First detected in North America near Boston in 1978, it has become one of the most abundant wasps on the continent. The species builds small, exposed paper nests in protected locations and preys primarily on live insects, particularly caterpillars. Unlike yellowjackets, it does not scavenge for meat or sugar. Its rapid spread has been attributed to ecological flexibility, superior competitive ability, and tolerance of human-altered environments.
invasive-species social-wasp paper-wasp predator pollinator urban-ecology eusocial nest-construction biological-control thermal-biology spatial-learning vibrational-communication aposematism honest-signal overwintering diapause Polistes Vespidae Hymenoptera North-America Europe New-Zealand South-Africa South-America monarch-butterfly caterpillar-predation nest-architecture gyne foundress dominance-hierarchy climate-change-impact energetics metabolic-rate microclimate suburban-habitat anthropogenic ornamental-pest vineyard-pest fruit-damage stinging-insect venom poison-gland warning-coloration Zahavian-signal Strepsiptera parasitoid Xenos behavioral-plasticity foraging learning memory thermoregulation ectothermy endothermy solar-radiation nest-temperature brood-development colony-survival multiple-founding single-founding season-length latitude temperate Mediterranean hibernacle overwintering-costs climate-warming range-expansion competition native-species-displacement biodiversity-impact conservation management control integrated-pest-management IPM identification antennae-color facial-markings caste reproduction male female sexual-dimorphism antennae abdomen wing mandible saliva paper comb cell pedicel trophallaxis larva pupa adult worker queen subordinate dominant aggression defense threat-display sting toxicity brightness coloration predator-avoidance prey caterpillar Lepidoptera butterfly moth garden agriculture vineyard orchard urban suburban rural forest habitat-preference temperature metabolism quiescence torpor survival fitness colony nest population abundance distribution range expansion invasion establishment introduction biotic-interaction trophic-cascade herbivory-suppression plant-fitness milkweed Danaus-plexippus monarch Nelson Tasman ecosystem-impact conservation-management biological-invasion ecology behavior physiology morphology taxonomy systematics nomenclature gender-agreement Latin Christ 1791 Vespa-dominula basionym catalogue-of-life GBIF iNaturalist observation citizen-science photography illustration field-guide orange black yellow red color-pattern size wing-length body compact legs short face square triangular dark curled straight elbowed blunt pointed tip Zahavian costly-signal hunt forage nectar honeydew aphid scale-insect flower grape umbellifer fennel lovage insect meatball feed emerge chew cap hexagonal wood-fiber bark exposed open umbrella stalk ant repellent substance coat protect location eave attic tree branch vine shrub cavity bird-box bee-hive shed grave-lantern overwinter shelter protected thermal climate cold winter spring summer autumn fall season month day activity defend threat display raise tiptoe social dominance hierarchy reproductive egg lay found cooperate compete selfish passive-aggressive individual recognition facial-marking cognition mushroom-body brain intelligent artist architect navigation plasticity spatial relocating food resource dish bait training experience vibration communication signal substrate-borne abdominal wagging oscillation secretion modulation perceive react movement attention feeding inspection body-temperature ambient solar radiation metabolic cost energetic expenditure efficiency warming change impact increase invasive spread success competitive ability flexibility adaptation reaction response condition year variation productivity founding single multiple rate benefit cooperation predation parasitism vesparum stylopid stylopization parasite host infestation mite Acari wasp fly effect community decline Danaus plexippus mortality instar early late larger smaller vulnerable resistant discovery chance contact direct recruitment nestmate site cascading trophic cascade herbivory suppression plant growth production Asclepias net exclusion experiment outcome suggestion strong detrimental ecosystem strategy method development protection biodiversity region first 2016 recent established exotic congener chinensis longer comparison higher lower greatest area built structure native unsuccessful translocate unable thrive warmer origin contributor factor research thesis insight behaviour knowledge direction aid effective journal publication DOI 10.26686 wgtn 14538585 v1 University Wellington Victoria MSc student dissertation study investigation analysis data field resident report local indirect interaction level function service provision natural pest biocontrol ornamental decorative crop damage fruit cherry western Colorado at least ripening choice preference height ground strata microsite environment closed habitat dense vegetation surrounding bush Patagonia Argentina Chile NW detected 2003 sympatric coexistence overlap minimal facilitation behavioral process interspecific semi-urban poorly studied species Hypodynerus labiatus new light finding contribution understanding collecting anthropized highlight importance consideration Ethology 10.1111 eth 13505 abstract only limited detail full text required comprehensive synthesis vibrational widespread regulate crucial conspicuous oscillatory wag strictly associated presence suggested involvement adult-larva hypothesis short-term trophallactic exchange modulate salivary decrease amount prepare receive stimulate release electro-magnetic shaker assess time record measure immediately after playback result show produce possibly order attract during neither nor support alleged role long-lasting Experimental Biology 10.1242 jeb 186247 flexible system expanding North America cause stir fast upon explanation present literature good invader northern rise little known nesting Central investigate basic principle Germany 49°group one to four small shorter than other mean newly founded 83 average length 4.6 prefer 54%46%major increased 47%single-foundress whereas 100%more two however no number term per observe well three consecutive greatly depending preceding imply remarkably quickly outside rapid colder Ecosphere 10.1890 es15-00254 1 thermoregulatory polistine different collect demand brood mainly ectothermic task living differing reveal environmental influence warm Southern infrared thermography entire usually ~20–40 °C nearly linearly thorax warmest part achieve optimal preferably use model enable evaluation endothermic effort exhibit weak almost constant performance about contrast mostly minor avoid high way reduce Insects 10.3390 insects10070187 trait strongly Comparative B 10.1007 s00360-016-1041-x provided gallicus insects14110849 adverse weather offer low sheltered live energy store Italy Austria describe calculate according standard differ significantly between 3.2 ±5.71 8.5 5.29 variance correspond closely meteorological cumulative mass-specific over period lowest compared both acclimation calculation up 3 due dramatic 40%additional exponentially temperature-dependent fluctuation disproportionately Jensen's inequality wooden bird box empty bee hive under grapevine grave lantern cemetery begin when exceed ~18–20 confidence note information inferred from active not discussed this source association addressed relationship insects14110886 thermophilic originating but now widely quite synanthropic human settlement place with favorable typical side wasps'wide ~20–37 above air advantage as accelerate speed did approximately 38.6 managed by cooling near ~1–2 cm always clearly elevated station climate-model-generated macroclimate revealed necessity measuring for reliable description insects'brighter-colored poison gland Frontiers Zoology 10.1186 1742-9994-9-20 aposmatism against consisting warning using toxin costly physical could simultaneously abundant striking such case indicate animal toxic also would ensure honestly examine positive correlation exists collected 30 photographed them volume width remained even controlling suggest pattern true sign poisonous they have theoretical predicting indicates quantitative within acting metabolically therefore limitation first-year Spain exact age 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ReplyDelete RepliesReplyOut prairieSeptember 8:02 keeping cabbage worm seen RepliesReplyAnonymousSeptember 13 2:06 PM becoming here Upper Peninsula Michigan pendulum seems swung ago everywhere vanishingly rare haven't again house right RepliesReplyL.R ShimerSeptember 4:35 head gal work everybody else kinda egalitarian RepliesReplyLarryMay 9:34 directed Bev Wigney BTW lived NE Missouri detailed presented Thanks cogent scientifically accurate summary insect's life-cycle RepliesBug EricMay 3:47 kind compliments Delete RepliesReplyReplyAdd commentLoad Blog currently reply reader himself Working resolve Newer Older Subscribe Atom Demonized hosting 4 p.m.Saturday Jan 20 Room 1124 Academic Surge 455 Crocker Lane campus Attendees chat check 50,000 vespid eight-million free friendly Parking estimate 2000 described inhabit 500 undescribed headline-grabbing giant Vespa mandarinia formerly Asian news media dubbed murder hornet confuse identify sheet example hidden rodent burrow wall huge 100,00 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