Parasitic versus nutritional regulation of natural fish populations
| Autor: | Frantz, Amélie, Perga, Marie-Elodie, Guillard, Jean |
|---|---|
| Přispěvatelé: | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Institute of Earth Surface Dynamics, Université de Lausanne (UNIL) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
comportement alimentaire
facteur environnemental Biodiversité et Ecologie parasitism composition en acide gras stable isotopes lake phosphorus concentration milieu lacustre food quality isotope stable Perca fluviatilis Biodiversity and Ecology allometric growth poisson Triaenophorus nodulosus fatty acid composition [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Wiley Open Access, 2018, 8 (17), pp.8713-8725. ⟨10.1002/ece3.4391⟩ Ecology and Evolution 17 (8), 8713-8725. (2018) Ecology and Evolution, vol. 8, pp. 8713-8725 |
| ISSN: | 2045-7758 |
| DOI: | 10.1002/ece3.4391⟩ |
| Popis: | International audience; on diet, physiology, and feeding behaviour of fish within lakes. Overall, we found a low impact of parasitism on the physiological condition and trophic status of juvenile perch at the end of their first summer. We find instead that juvenile perch growth and fat storage, both factors tied to their winter survival, are under strong nutritional constraints. However, the coinciding nutritional constraints and parasite prevalence of perch juveniles in these three lakes may result from the indirect effect of lake nutrient concentrations, which, as a major control of zooplankton communities, simultaneously regulate both the dietary quality of fish prey and the host-parasite encounter rates. |
| Databáze: | OpenAIRE |
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