Produção Nacional
Recrutamento do peixe-rei, Atherinella brasiliensis (Quoy & Gaimard) (Atheriniformes, Atherinopsidae), na margem continental da Baía de Sepetiba, Rio de Janeiro, Brasil
2001; Sociedade Brasileira de Zoologia; Volume: 18; Issue: 4 Linguagem: Inglês
10.1590/s0101-81752001000400021
ISSN1806-969X
AutoresAndré Luiz Machado Pessanha, Francisco Gerson Araújo,
Tópico(s)Fish biology, ecology, and behavior
ResumoRecruitament of the silversidc, Atherillella brasiliellsis (Quoy & Gaimard) (Atheriniformcs, Atherinopsidae), in continental margin of Sepetiba Bay, Rio de Janeiro, Brazil.The silverside, Atherinella brasiliensis (Quoy & Gaimard, 1824), a resident species ofthe shallows ofbays, estuaries and coastallagoons, was studied during two annual cycles, using beach seines (July 1996 to June 1998), in the continental margin ofthe Sepetiba Bay, aiming to assess recruitment and distribution patterns.A wide recruitment period, with young-of-the-year appearing from early spring to early autumn, was shown, witl-t peaks ofjuveniles (Total Length -L T = 10-30 mm) being recorded in two periods ofthe year; one in November and another in March.The highest abundances, of both juvenile and adults, were recorded in Coroa Grande and Itacuruçá, sites located in theouter Bay, during the whole summer, with significant differences were found.In spite of not having been found any statistically significant relatiol1ship between the environmental factors and the occurrence of this species, a trend of higher abundance in colder and more saline waters was detected.High values of growth coefficient (K = 0.93) and low asymptotic lenght (L~ = 11.6 em) indicated that this species shows a high growth rate and short life cycle, with life span of 3.09 years , in this system.
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