Seasonality, Dietary Overlap and the Role of Taxonomic Resolution in the Study of the Diet of Three Congeneric Fishes from a Tropical Bay

Autor(es)

Pombo, Maira ^[1] ; Denadai, Marcia Regina ^[2] ; Turra, Alexander ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Oceanog, Sao Paulo - Brazil

^[2] Ctr Univ Modulo, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 8, n. 2 FEB 6 2013.
• Citações Web of Science: 15

Resumo

Not only seasonality but also taxonomic resolution of prey categories has been shown to affect diet studies. We analyzed the stomach contents of three sympatric species, Stellifer rastrifer, S. brasiliensis and S. stellifer, sampled monthly from August 2003 to October 2004 in Caraguatatuba Bay, southeastern Brazil. General characteristics and similarities among their diets were evaluated by considering high taxonomic ranks of all prey groups, and also the lower taxonomic ranks of the main prey groups. Dietary similarity was relatively high among species and low between seasons, and both evaluation criteria gave the equivalent results. The rare items, however, provided information about resource partition, and the species compositions of the most important groups were apparently good indicators of food availability. (AU)

• Processo FAPESP: 05/60041-6 - Avaliação do impacto da predação e de eventos de mortalidade em massa no estoque do berbigão Tivela mactroides (Born, 1778) (Mollusca, Veneridae) na enseada de Caraguatatuba, SP
• Beneficiário: Márcia Regina Denadai
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores