期刊
JOURNAL OF FISH BIOLOGY
卷 93, 期 1, 页码 143-146出版社
WILEY
DOI: 10.1111/jfb.13672
关键词
feeding ecology; foraging behaviour; inter-individual variation; salmonids; vertical distribution
资金
- Galician Plan for Research, Innovation and Growth (Plan I2C, Xunta de Galicia)
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).
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