Phenotypic responses to piscivory in invasive gibel carp populations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F23%3A43906341" target="_blank" >RIV/60076658:12520/23:43906341 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s00027-023-00974-8" target="_blank" >https://doi.org/10.1007/s00027-023-00974-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00027-023-00974-8" target="_blank" >10.1007/s00027-023-00974-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phenotypic responses to piscivory in invasive gibel carp populations

Popis výsledku v původním jazyce

The establishment of introduced fishes can be inhibited by the biotic resistance from species in the receiving environment, including strong consumptive resistance from specific piscivorous fishes. In response to predation pressure, prey fish population responses include predator-induced morphological changes, where an extreme example is seen in the crucian carp Carassius carassius, which forms deep-bodied morphs in predator presence that reduces individual predation risk. As its congener, gibel carp Carassius gibelio is a highly invasive fish across in its non-native range in Eurasia. Here we test whether their introduced populations also respond to the presence of piscivorous fishes by altering their body shape and trophic ecology by testing differences across 16 non-native lentic populations in Turkey that provided groups of piscivorous fish presence versus absence. In piscivore presence, gibel carp had a higher ratio of body length-to-depth than in piscivore absence, but with their body condition factor being higher in absence. Stable isotope mixing models predicted that gibel carp had diets that were more animal based (gastropods and zooplankton) in piscivore absence, but plant based in piscivore presence. Moreover, diet predictions of piscivore diet suggested gibel carp were consistently consumed less than other prey fishes. These results suggest that these alien gibel carp were responding to piscivory as per crucian carp, reducing their predation risk at the individual level by forming deep-bodied morphs. We suggest these morphological responses then decrease the strength of the biotic resistance against their invasion at the population level.

Název v anglickém jazyce

Phenotypic responses to piscivory in invasive gibel carp populations

Popis výsledku anglicky

The establishment of introduced fishes can be inhibited by the biotic resistance from species in the receiving environment, including strong consumptive resistance from specific piscivorous fishes. In response to predation pressure, prey fish population responses include predator-induced morphological changes, where an extreme example is seen in the crucian carp Carassius carassius, which forms deep-bodied morphs in predator presence that reduces individual predation risk. As its congener, gibel carp Carassius gibelio is a highly invasive fish across in its non-native range in Eurasia. Here we test whether their introduced populations also respond to the presence of piscivorous fishes by altering their body shape and trophic ecology by testing differences across 16 non-native lentic populations in Turkey that provided groups of piscivorous fish presence versus absence. In piscivore presence, gibel carp had a higher ratio of body length-to-depth than in piscivore absence, but with their body condition factor being higher in absence. Stable isotope mixing models predicted that gibel carp had diets that were more animal based (gastropods and zooplankton) in piscivore absence, but plant based in piscivore presence. Moreover, diet predictions of piscivore diet suggested gibel carp were consistently consumed less than other prey fishes. These results suggest that these alien gibel carp were responding to piscivory as per crucian carp, reducing their predation risk at the individual level by forming deep-bodied morphs. We suggest these morphological responses then decrease the strength of the biotic resistance against their invasion at the population level.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10617 - Marine biology, freshwater biology, limnology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Aquatic Sciences

ISSN

1015-1621

e-ISSN

1420-9055

Svazek periodika

85

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000993834100002

EID výsledku v databázi Scopus

2-s2.0-85160059844