Claw loss and the prey preferences of an invasive crayfish

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F25%3A43910024" target="_blank" >RIV/60076658:12520/25:43910024 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3897/neobiota.100.149248" target="_blank" >https://doi.org/10.3897/neobiota.100.149248</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3897/neobiota.100.149248" target="_blank" >10.3897/neobiota.100.149248</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Claw loss and the prey preferences of an invasive crayfish

Popis výsledku v původním jazyce

Predator-prey relationships underpin the stability of ecosystems but can be perturbed by numerous factors, such as biological invasions. Crayfish readily colonize new ecosystems and their impacts can modify food webs or ecosystem functioning. However, while crayfish exert high levels of predation pressure handling prey with their claws, claw loss is also common in their populations, which could mediate prey selection pressures. Here, we investigate how the number of claws in the marbled crayfish Procambarus virginalis modulates its preferences for two different available prey: Chironomus plumosus and Gammarus fossarum. We showed that the food preference of P. virginalis was mainly for soft, less mobile prey, such as C. plumosus, with significantly fewer G. fossarum (harder, more mobile prey) being killed. This preference was largely independent of claw presence but depended on the availability of prey, with fewer G. fossarum being targeted as the number of claws decreased. Our results highlight the complexity of predator-prey ecological relationships in invaded freshwater ecosystems and show that some biotic factors, such as the quantity and type of prey available, need to be taken into account in order to better understand their role in ecosystem dynamics.

Název v anglickém jazyce

Claw loss and the prey preferences of an invasive crayfish

Popis výsledku anglicky

Predator-prey relationships underpin the stability of ecosystems but can be perturbed by numerous factors, such as biological invasions. Crayfish readily colonize new ecosystems and their impacts can modify food webs or ecosystem functioning. However, while crayfish exert high levels of predation pressure handling prey with their claws, claw loss is also common in their populations, which could mediate prey selection pressures. Here, we investigate how the number of claws in the marbled crayfish Procambarus virginalis modulates its preferences for two different available prey: Chironomus plumosus and Gammarus fossarum. We showed that the food preference of P. virginalis was mainly for soft, less mobile prey, such as C. plumosus, with significantly fewer G. fossarum (harder, more mobile prey) being killed. This preference was largely independent of claw presence but depended on the availability of prey, with fewer G. fossarum being targeted as the number of claws decreased. Our results highlight the complexity of predator-prey ecological relationships in invaded freshwater ecosystems and show that some biotic factors, such as the quantity and type of prey available, need to be taken into account in order to better understand their role in ecosystem dynamics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

NeoBiota

ISSN

1619-0033

e-ISSN

1314-2488

Svazek periodika

100

Číslo periodika v rámci svazku

neuvedeno

Stát vydavatele periodika

BG - Bulharská republika

Počet stran výsledku

18

Strana od-do

91-108

Kód UT WoS článku

001612435000005

EID výsledku v databázi Scopus

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