Terrestrial subsidies in the diets of stream fishes of the USA: comparisons among taxa and morphology
| Autor: | Timothy H. Bonner, Mario L. Sullivan, Yixin Zhang |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
geography
education.field_of_study geography.geographical_feature_category Ecology biology Population Aquatic Science Plankton Oceanography biology.organism_classification Crustacean Fishery Habitat Energy source education Ecology Evolution Behavior and Systematics Trophic level Riparian zone Invertebrate |
| Zdroj: | Marine and Freshwater Research. 63:409 |
| ISSN: | 1323-1650 |
| DOI: | 10.1071/mf11232 |
| Popis: | Terrestrial food subsidies are important energy sources to stream fishes worldwide. However, their importance is not fully understood, except perhaps for some salmonid communities. Using the published literature, we investigated patterns of fish taxonomy and jaw morphology in the consumption of terrestrial food subsidies by non-salmonid stream fishes in the USA. We hypothesised that: (1) in general, non-salmonid fishes would consume terrestrial food items to the same extent as salmonids; and (2) subsidy consumption would be associated with jaw morphology. Cyprinids and fundulids consumed terrestrial subsidies approaching levels observed in salmonids (20–44%) whereas other groups (e.g. catostomids and moronids) consumed far less ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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