Interações tróficas de peixes marinhos no Estado de São Paulo: banco de dados e comparações espaço-temporais / Trophic interactions of marine fish in the State of São Paulo: database and spatial-temporal comparisons

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

13/02/2012

RESUMO

The marine ecosystems of São Paulo State are under intense anthropic pressure. Considering that trophic studies of fishes are essential to the management of ecosystems and fisheries, a fish stomach content database was built in order to summarize the available data in the region. Primary (unpublished) and secondary (published) data were inserted, representing 142 species. Based on this database, diet compositions of fishes were compared among 5 marine systems of São Paulo State (North continental shelf, Central continental shelf, São Sebastião channel, Santos bay and Cananéia lagoon estuarine system). It was observed that diet composition varied among systems, probably associated to the food resource availability. Seasonal comparison (autumn/winter and spring/summer) performed in the North continental shelf showed that the interspecific variation was larger than the intraspecific temporal variation. Diet of Micropogonias furnieri, an abundant and commercially important species, was analyzed in detail and it was concluded that it has a mixed feeding strategy, consuming mostly few items (polychaetes and shrimps) and sporadically many others. Some considerations on scientific raw data publication and on methodology of stomach content studies were made.

ASSUNTO(S)

atlântico sudoeste banco de dados conteúdo estomacal database ecologia trófica estado de são paulo estratégia alimentar feeding strategy fish micropogonias furnieri micropogonias furnieri peixes são paulo state south-western atlantic stomach content trophic ecology

ACESSO AO ARTIGO

Documentos Relacionados