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Aspects of fishing and reproduction of the black grouper Mycteroperca bonaci (Poey, 1860) (Serranidae: Epinephelinae) in the Northeastern Brazil Neotropical Ichthyology
Teixeira,Simone Ferreira; Ferreira,Beatrice Padovani; Padovan,Isaíras Pereira.
The reproductive biology of the black grouper Mycteroperca bonaci, caught by artisanal fishermen using hook and line or compressor - assisted spear fishing, from the Northeastern shelf and oceanic banks of Brazil, was studied between August 1996 and April 1998. The sexual pattern, gonadal development, the spawning mode and seasonality were investigated. The gonadal stages indicated that this species is a protogynous hermaphrodite and that transition from female to male occurs through simultaneous re-absorption of ovarian tissue and proliferation of testicular tissue in the gonads. The specie is a multiple spawner and frequency analysis of gonadal stages and gonadosomatic index suggest that the spawning season occurs between April and September....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Serranid; Reproductive biology; Protogynous hermaphrodite; "correção"; Feeding aggregation.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000100004
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Morfologia do ovo e das formas imaturas de Zagloba beaumonti Casey (Coleoptera, Coccinellidae) Zoologia
Lima,Iracilda Maria de Moura; Veiga,Antônio Fernando de Souza Leão; Padovan,Isaíras Pereira; Oliveira,José Vargas de.
Optical microscopy and scanning electron microscopy technics were aplied in order to describe, for the first time, the immature stages of Z. beaumonti Casey, 1899 reared on it's prey, Diaspis echinocacti (Bouché, 1833) (Homoptera, Diaspididae), the unique pest of Opuntia ficus-lndica Mill and Nopalea cochenillifera (L.) Salm-Dick (prickly-pear, Cactaceae), an impportant alternative food source for the cattle on drought áreas of Northeast of Brazil. Yellow eggs layed inside the scales, caraboid larvae without wax processes and pupae partially protected by the last exuvia presented the Scymninae pattern.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coccinellidae; Scymninae; Zagloba beaumonti; Morphology; Imature stages.
Ano: 1992 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200004
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