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@article{2422737,
author = {Hnilička, Michal and Janáč, Michal and Palupová, Eva and Tkachenko, Maria Yu. and Horká, Petra and Jandová, Kateřina and Holubová, Kateřina and Jurajda, Pavel and Ondračková, Markéta},
article_number = {7.8.2024},
doi = {http://dx.doi.org/10.1007/s10750-024-05658-4},
keywords = {Non-native species; Feeding; Food chain; Trophic position; Piscivory},
language = {eng},
issn = {0018-8158},
journal = {Hydrobiologia},
title = {Stable isotope analysis reveals fish juveniles as a temporal main resource consumed by invasive pumpkinseed (Lepomis gibbosus)},
url = {https://link.springer.com/article/10.1007/s10750-024-05658-4},
volume = {2024},
year = {2024}
}
TY - JOUR
ID - 2422737
AU - Hnilička, Michal - Janáč, Michal - Palupová, Eva - Tkachenko, Maria Yu. - Horká, Petra - Jandová, Kateřina - Holubová, Kateřina - Jurajda, Pavel - Ondračková, Markéta
PY - 2024
TI - Stable isotope analysis reveals fish juveniles as a temporal main resource consumed by invasive pumpkinseed (Lepomis gibbosus)
JF - Hydrobiologia
VL - 2024
IS - 7.8.2024
SP - 1-18
EP - 1-18
PB - Springer
SN - 00188158
KW - Non-native species
KW - Feeding
KW - Food chain
KW - Trophic position
KW - Piscivory
UR - https://link.springer.com/article/10.1007/s10750-024-05658-4
N2 - The pumpkinseed Lepomis gibbosus (Linnaeus, 1758) is a small centrarchid fish species from North America that has invaded most European basins, with pronounced expected impacts. Analyses of pumpkinseed diet in its invasive range using gut content analysis (GCA) show macrozoobenthos as the most common dietary item, suggesting a competitive effect on native fish communities. Our study uses a combination of GCA and stable isotope analysis (SIA) to document pumpkinseed diet at two sites in its invaded range and relates pumpkinseed diet preferences with parasitic load. SIA revealed juvenile fish as a major prey item at one of the sites (63 and 50% of the diet of small and the large fish), while GCA showed pumpkinseed preying mostly on macroinvertebrates (chironomids, gastropods, Ephemeroptera, and Zygoptera larvae) at both sites. While infrequent infection by trophically transmitted parasitic nematodes could be related to low consumption of zooplankton, substantial infection by metacercariae of Posthodiplostomum centrarchi Hoffman1958 appears to reflect relatively high consumption rates of its intermediate host, physid snails. Using SIA allowed to demonstrate that pumpkinseed feeding in its non-native range can be based on piscivory, emphasising the need for combining multiple methods when studying the impact of non-native species on food webs.
ER -
HNILIČKA, Michal, Michal JANÁČ, Eva PALUPOVÁ, Maria Yu. TKACHENKO, Petra HORKÁ, Kateřina JANDOVÁ, Kateřina HOLUBOVÁ, Pavel JURAJDA and Markéta ONDRAČKOVÁ. Stable isotope analysis reveals fish juveniles as a temporal main resource consumed by invasive pumpkinseed (Lepomis gibbosus). \textit{Hydrobiologia}. Springer, 2024, vol.~2024, 7.8.2024, p.~1-18. ISSN~0018-8158. Available from: https://dx.doi.org/10.1007/s10750-024-05658-4.
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