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Alimentação de Bairdiella ronchus (Cuvier) (Perciformes, Sciaenidae) na Baía de Guaratuba, Paraná, Brasil Zoologia
Vendel,Ana Lúcia; Chaves,Paulo de Tarso da Cunha.
Seasonal variation of food items of Bairdiella ronchus (Cuvier, 1830) classified by size was analysed based on monthly samples between september/1993 and september/1996 at the Guaratuba Bay, Southern Brazil. The stomach contents of a hundred eighty-two fishes were analysed by the Occunence Frequency Method and Point Count for a Lot Method. The individuais were divided in two groups, smaller and longer than 140mm, and a comparative study of digestive tract and branchial are was performed for these groups. For fishes smaller than 140mm the following sequence of items was obtained matching both methods by using the Preponderance índices: decapods (subdivided in Brachyura, Caridea and Penaeidea), polychaets, isopods, fishes, unidentified material, copepods,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet; Bairdiella ronchus; Sciaenidae; Guaratuba Bay.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000200003
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Atividade reprodutiva de Bairdiella ronchus (Cuvier) (Pisces, Sciaenidae) na Baía de Guaratuba, Paraná, Brasil Zoologia
Chaves,Paulo de T. da Cunha.
Bairdiella ronchus is one of the most common species of demersal ichthyofauna in Guaratuba Bay, south Brazil. However, this study reveals that is does not inhabits permanently the mangroove area. Individuals with more than 94mm total lenght leave mangroove area in late summer and early auntumn and returming in the spring. when they start ovarian veitellogenesis. During late spring and early summer, the oocytes are hydrated, and empty follicles can be found in the ovaries, indicating that this is the reproductive time for this species As other Sciaenidae. B. ronchus is a multiple spawner species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pisces; Sciaenidae; Bairdiella ronchus.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000400005
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