Dietary overlap of invasive cyprinids and common carp in fishponds of Central Europe

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F25%3A43909611" target="_blank" >RIV/60076658:12520/25:43909611 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.aquaculture.2024.741677" target="_blank" >https://doi.org/10.1016/j.aquaculture.2024.741677</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.aquaculture.2024.741677" target="_blank" >10.1016/j.aquaculture.2024.741677</a>

Result language
angličtina
Original language name
Dietary overlap of invasive cyprinids and common carp in fishponds of Central Europe
Original language description
Freshwater fishponds are an important part of the global aquaculture fish production, but they also are a source of invasive species with potentially negative impacts on pond ecosystems. In this study, we investigated dietary competition between common carp ( Cyprinus carpio) ) and two invasive cyprinids, Pseudorasbora parva and Carassius gibelio, , in fishponds of Central Europe. Using delta C-13 and delta N-15 stable isotopes analysis, we evaluated the extent of isotopic niche overlaps and the utilization of dietary sources by these species in fishponds that differ in the intensity of fish production. The isotopic niche of C. carpio and the invasive cyprinids overlap more in ponds with intensive (south-eastern Czechia) and semi-intensive (northern Austria) fish production then in ponds with low intensity production (eastern Slovakia). Our results also suggest that both invasive species opportunistically adjust their diet to their gape size and that they predominantly assimilate dietary energy from zooplankton and macroinvertebrates rather than from primary producers and detritus. Our study highlights the high potential of these invasive cyprinids to compete with C. carpio in fishponds of Central Europe.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40103 - Fishery

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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