Non-consumptive effects of native, alien and invasive alien crayfish on damselfly egg life history and carry-over effects on larval physiology

NeoBiota, Journal Year: 2025, Volume and Issue: 97, P. 215 - 235

Published: Feb. 13, 2025

Invasive alien (IA) predators pose significant threats to native ecosystems, often leading profound impacts on prey species through both direct and non-consumptive effects (NCE). This study focused the NCE of predator-induced stress from one crayfish species, noble ( Astacus astacus ), compared danube Pontastacus leptodactylus ) two IA signal Pacifastacus leniusculus spinycheek Faxonius limosus damselfly Ischnura elegans . We investigated cue effect egg traits as well potential carry-over stage larval stage. hypothesised that cues would lead more pronounced negative crayfish, due an evolutionary history interaction recognition these threats. Unexpectedly, cues, caused significantly higher mortality prolonged developmental times, particularly while had weaker, yet, still effects. Hatching synchrony was reduced this same extent by all four species. Notably, effects, resulting in survival, mass fat content, which were for crayfish. Native did not induce suggesting I. may have evolved a degree resilience against predator or produce chemical do cause strong antipredator response. Our findings underscore importance considering immediate carry over across multiple life stages, context biological invasions.

Language: Английский

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Invasive vermiculated sailfin catfish (Pterygoplichthys disjunctivus) has an impact on highly valued native fish species

Biological Invasions, Journal Year: 2023, Volume and Issue: 25(6), P. 1795 - 1809

Published: Feb. 13, 2023

Language: Английский

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Contrasting Effects of Increasing Invasive Crayfish Densities on Competing Submerged Macrophytes in Shallow Lakes

Freshwater Biology, Journal Year: 2025, Volume and Issue: 70(1)

Published: Jan. 1, 2025

ABSTRACT Non‐native crayfish are among the most widespread aquatic invasive species worldwide. High densities of in lakes can potentially cause complete loss macrophytes through herbivory, physical destruction, shading by suspension sediments and nutrient release facilitating phytoplankton, thus altering ecosystem state functions. However, lower may affect different macrophyte ways, competition between with growth forms. We hypothesize that high completely destroy submerged communities shift systems into more turbid conditions whereas low promote low‐growing compete canopy‐forming species. To test these hypotheses, we applied three (2, 4, 8 m −2 ) Procambarus clarkii a control (no crayfish) to 36 mesocosms monocultures mixed stands for 60 days. measured concentrations nutrients, suspended solids, phytoplankton periphyton above‐ belowground biomass Vallisneria natans Hydrilla verticillata . In addition, conducted meta‐analysis impacts on compare effect sizes densities. Using data from published studies, derived relationship density crayfish‐induced reductions abundance. Our revealed significant decline increasing line existing caused strong both increased concentrations, sediment, favouring an conditions. Low medium reduced similarly monocultures. cultures, (2 H. than V. , supporting our hypothesis. This support occurred despite temporal facilitation biomass. results show impact invasions ecosystems is strongly dependent their density. facilitate increase likelihood collapse state. provide competitive advantage would otherwise be outcompeted Although eradication often impossible, management target have positive effects invaded ecosystems.

Language: Английский

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Cross-ecosystem effects of light pollution and invasive signal crayfish on riparian spiders

Global Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown, P. e03577 - e03577

Published: April 1, 2025

Language: Английский

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Insect responses to seasonal time constraints under global change are facilitated by warming and counteracted by invasive alien predators

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 19, 2024

Abstract In seasonal environments, organisms with complex life cycles not only contend time constraints (TC) but also increasingly face global change stressors that may interfere responses to TC. Here, we tested how warming and predator stress imposed during the egg larval stages shaped history behavioural TC in temperate damselfly Ischnura elegans . Eggs from early late clutches season were subjected ambient 4 °C temperature presence or absence of cues perch signal crayfish. After hatching, larvae retained at same thermal regime, treatment was continued up emergence. The eggs decreased their development time, especially under when exposed cues. However, increased cues, crayfish survival as indicating a carry-over effect. additively reduced Independent TC, cue effects on stronger than stage. individuals expressed lower mass emergence, which mirrored size difference between field-collected mothers. Warming caused higher boldness showed number moves, whereas boldness. There no effect behaviour. results indicate compensate for laying, is facilitated counteracted predation risk, by

Language: Английский

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Taurian Scientific Herald, Journal Year: 2022, Volume and Issue: 126

Published: Jan. 1, 2022

Таврійський науковий вісник.Серія: Сільськогосподарські науки

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Characteristics of the moulting process of different crayfish species

Taurian Scientific Herald, Journal Year: 2022, Volume and Issue: 126, P. 230 - 237

Published: Jan. 1, 2022

Language: Английский

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The signal crayfish Pacifastacus leniusculus (Dana, 1852) (Crustacea, Decapoda) is threatening the near future of Margaritifera margaritifera Linnaeus, 1758 (Bivalvia, Unionoida) in the Negro River (NW Zamora, Spain)

Animal Biodiversity and Conservation, Journal Year: 2023, Volume and Issue: unknown, P. 165 - 171

Published: Sept. 28, 2023

We studied the incidence of signal crayfish on a population Margaritifera margaritifera in Negro River (Zamora, Spain) during summers 2019 to 2022. The predation was assessed as mortality factor relation floods and hydrology river. were trapped small plot high pearl mussels density monitored since 2002, collected each summer 2019, which time their abundance increased (65 % three years). Simultaneously, we counted shells carried by gravel riverbanks. stable between 2022 (10.3 19.4 mortality), while at bottom river due from 2.7 43.3 %. During dry season, 29 that had recently died whose shell edges widely gnawed crayfishes plot. appeared bitten only contour exposed above gravel, ruling out possibility marks could be effect scavenging dead specimens crayfish. Low intensity trapping barely affected population, following year controlled section recovered.

Language: Английский

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Biology and cultivation of freshwater crayfish (Astacoidea) in Ukraine and worldwide. Thematic list of scientific publications (2019–2024)

Ribogospodarsʹka nauka Ukraïni, Journal Year: 2024, Volume and Issue: 2(68), P. 164 - 185

Published: June 28, 2024

Purpose. Compiling a list of sources, which may be useful for learning about studies and issues related to river crayfish, their ecology biology. Methodology. The holistic approach allowed getting acquainted with broad range literature on the study topic, while selective focusing specific aspects or authors specializing in this field. Attention was focused papers scientific journals collections, materials temporary teams, as well monographs devoted biology crayfish. Findings. A thematic main works - international practical conferences, articles from collections works, abstracts dissertations crustaceans cultivation global crayfish aquaculture has been prepared. cited cover time period 2019 2024. bibliography contains 166 publications, placed alphabetical order described accordance requirements HAC, DSTU 8302:2015 «Information documentation. Bibliographic reference. General provisions rules drafting», taking into account amendments (UKND code 01.140.40). Practical value. can law-making activities, maintenance ecological security Ukraine, specialists, scientists, students interested crustacean farming. Key words: management, cultivation, commercial harvest, feeding, freshwater

Language: Английский

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Invasieve rivierkreeften in Vlaanderen: Stand van zaken en aanbevelingen bij vaststelling van nieuwe soorten en populaties

Published: Jan. 1, 2023

In de laatste jaren zien we een toenemend aantal meldingen over niet-inheemse invasieve rivierkreeften in Vlaanderen.De toename geldt niet alleen voor het waarnemingen, maar ook soorten.Hoewel verschillende soorten op Unielijst staan als zorgwekkende, exoten EU, zijn er Vlaanderen tot dusver beperkte initiatieven opgestart om deze te bestrijden of hun verspreiding perken.Dit rapport bundelt beschikbare kennis rivierkreeftenproblematiek, en is eerste aanzet beheer van organismen.In plaats geven overzicht mogelijke impact uitheemse zowel biota fysieke omgeving.Hun trofische verwevenheid leidt rechtstreekse onrechtstreekse groepen macrofyten, amfibieën, vissen invertebraten.Als drager pathogenen kunnen zij ziektes verder verspreiden, belemmeren herintroductie inheemse Europese rivierkreeft.Ook rivierkreeftengedrag bewerkstelligt verdere achteruitgang watersysteem.Graafgedrag oevers zorgt hogere sedimentflux naar waterkolom.Ook wijze voortbewegen foerageergedrag leiden vertroebeling waterkolom.De recht evenredig met densiteit aanwezige populatie rivierkreeften, afhankelijk soort rivierkreeft.Voor elk wordt verspreiding, voornaamste eigenschappen introductiegeschiedenis toegelicht.Ook die zich hier potentieel vestigen worden detail besproken.Dit beschouwde rivierkreeften: Aanwezig VlaanderenTe verwachten Gevlekte Amerikaanse rivierkreeft Gewone Yabby Californische Calicotkreeft Turkse Kentuckyrivierkreeft Gestreepte Roestbruine Rode Geknobbelde Marmerkreeft Een beheerregeling surveillancenetwerk, bijvoorbeeld implementatie eDNAtechnologie, laat toe proactief invasies organismen

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