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Diet of four annual killifishes: an intra and interspecific comparison Neotropical Ichthyology
Laufer,Gabriel; Arim,Matías; Loureiro,Marcelo; Piñeiro-Guerra,Juan Manuel; Clavijo-Baquet,Sabrina; Fagúndez,César.
We examined the diet of 4 annual fishes, Austrolebias viarius, Austrolebias cheradophilus, Austrolebias luteoflammulatus and Cynopoecilus melanotaenia inhabiting temporal ponds of southeastern Uruguay, by analysis of stomach contents. Fishes were captured from fifty ephemeral ponds of Castillos Lagoon basin, in the region of the Humedales del Este. We identified 13099 individual prey items extracted from 669 stomachs of the four captured species. In the studied system, annual killifishes represents the most abundant and conspicuous top predators. Killifishes are generalist key predators at the ephemeral ponds of the studied system, consuming mostly aquatic items. Zooplancton represented the bulk of the diet in the four analyzed species, followed by eggs,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Annual fishes; Foraging behavior; Predators; Food analysis.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000100010
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