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Examining the link between dietary specialization and foraging modes of stream‐dwelling brown trout Salmo trutta
Author(s) -
SánchezHernández Javier,
Cobo Fernando
Publication year - 2018
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.13672
Subject(s) - foraging , salmo , brown trout , biology , trout , predation , benthic zone , salmonidae , ecology , invertebrate , fishery , streams , fish <actinopterygii> , computer network , computer science
The aim of this study was to explore differences in dietary specialization across two foraging modes (benthic v . surface‐drift foraging) of stream‐dwelling brown trout Salmo trutta . The degree of inter‐individual niche variation within each foraging mode was high, but the dietary specialization was maintained between foraging modes. This study supports the view that if aquatic invertebrates are more abundant and accessible than surface prey, the individuals will not specialize on surface prey (surface‐drift foraging).