
ANÁLISE DA ESTRATÉGIA ALIMENTAR DE MACRODON ANCYLODON (BLOCH & SCHNEIDER, 1801) - (PERCIFORMES: SCIAENIDAE) DE UM ESTUÁRIO DO LITORAL OCIDENTAL DO MARANHÃO - BRASIL
2004; UNIVERSIDADE FEDERAL DO MARANHÃO; Volume: 17; Issue: 1 Linguagem: Português
ISSN
1981-6421
AutoresNivaldo Magalhães Piorski, Fúlvia R. C. L. Maranhão, Railma M. V. Rocha, Jorge Luíz Silva Nunes,
Tópico(s)Marine and fisheries research
ResumoA dieta de Macrodon ancylodon (Bloch & Schneider, 1801) foi investigada analisando-se o conteudo estomacal de 51 exemplares, com o comprimento padrao variando de 81-184mm, capturados por redes de espera e emalhe de deriva no estuario do rio Cocal, litoral ocidental do Maranhao, Brasil. A frequencia de ocorrencia e a abundância das presas especificas foram utilizadas para descrever as estrategias alimentares empregadas pela especie. O resultado apontou crustaceos decapodas e peixes como os itens mais abundantes da dieta. Conclui-se, que a especie e carnivora generalista apresentando variacoes nas caracteristicas morfologicas associadas com a alimentacao e evidencias de canibalismo. ABSTRACT Analysis of feeding strategy of pescadinha-go Macrodon ancylodon (Bloch & Schneider, 1801) - (Perciformes: Sciaenidae) from a estuary of the ocidental coast of Maranhao - Brazil The diet of Macrodon ancylodon (Bloch & Schneider, 1801) was investigated by analysis of the stomach contents of 51 specimes, with the standard length ranging from 81mm to 184mm. The specimes were captured by gill nets in the estuary of the Cocal river, Ocidental coast from Maranhao, Brazil. The occurrence frequency and the specific-preys abundance were used to describe the alimentary strategies employed by the species. The results pointed crustaceans decapods and fish as the most abundant itens of the diet. We concluded that M. ancylodon is carnivorous generalist, with variations in the morphological features associated with the feeding and it presents evidences of cannibalism. Keywords: diet, Macrodon ancylodon , Maranhao, specialist, carnivorous, cannibalism.
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