Spatial and Size Variation in Dietary Niche of a Non-native Freshwater Fish
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F21%3A43902674" target="_blank" >RIV/60076658:12520/21:43902674 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1643/i2020099" target="_blank" >https://doi.org/10.1643/i2020099</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1643/i2020099" target="_blank" >10.1643/i2020099</a>
Alternative languages
Result language
angličtina
Original language name
Spatial and Size Variation in Dietary Niche of a Non-native Freshwater Fish
Original language description
Invasive fishes continue to adversely impact the structure and function of aquatic ecosystems globally. The effects of introduced populations may, however, differ according to key characteristics such as size, abundance, invaded habitat type, and community composition. Here, we conduct diet analyses to describe the feeding characteristics of the nonnative North American Pumpkinseed, Lepomis gibbosus, across multiple habitat types (three lentic and three lotic systems) and fish size classes. Pumpkinseeds exhibited a broad diet, inclusive of numerous threatened species groups (e.g., amphibians) and commonly included dipterans and detritus overall. Observed diets were more diverse in ponds compared to stream habitats, as well as for larger individuals, with individuals in streams tending to consume terrestrial insects in higher numbers. Our results show that the impact of Lepomis gibbosus differs not only according to size and ontogeny, but also depending on the habitat type, probably due to different prey availabilities and biotic interactions. This has implications for ecological impacts of this invasive species in lentic and lotic systems, with a generalist diet potentially facilitating impacts on a broad range of prey taxa, with concomitant adverse competitive effects on native predator species. © 2021 by the American Society of Ichthyologists and Herpetologists.
Czech name
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Czech description
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Classification
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
10613 - Zoology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Copeia
ISSN
0045-8511
e-ISSN
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Volume of the periodical
109
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
501-506
UT code for WoS article
000692956700012
EID of the result in the Scopus database
2-s2.0-85112735927