Resumo
During June 1999 to June 2000 one hundred and forty seven females of Hoplosternum littorale Hancock, 1828 were collected from the Curiaú River, Macapá, Amapá, Brazil. The objective of this study was to determine the fecundity and the type of spawning of H. littorale. Analysis of the percentage distribution of the oocyte diameter softh e females, in five different stages of gonadal development, showed that this species is a total spawner. There were two different size graups of oocytes with synchranic development. The total fecundity varied from 9, 144 to 31, 698 mature oocytes.The fecundity, when related to total length and weight, showed that it increases with the enhance in total length and weight.
Osteichthyes; Siluriformes; Hoplosternum littorale; fecundity; typeof spawning
Osteichthyes; Siluriformes; Hoplosternum littorale; fecundity; typeof spawning
Fecundidade e tipo de desova do tamuatá, Hoplosternum littorale Hancock (Osteichthyes, Siluriformes) no Rio Curiaú, Macapá, Amapá
Fecundity and typeofspawning oftamuatá, Hoplosternum littorale Hancock (Osteichthyes, Siluriformes) in Curiaú River, Macapá, Amampá
Júlio César Sá-OliveiraI; Sathyabama ChellappaII
IDepartamento de Biologia, Universidade Federal do Amapá. Rodovia JK, Km 02, 68900-000 Macapá, Amapá, Brasil. E-mail: juliosa@unifap.br
IIPrograma de Pós-Graduação em Bioecologia Aquática, Departamento de Oceanografia e Limnologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte. Praia de Mãe Luiza, 59014-100, Natal, Rio Grande do Norte, Brasil. E-mail: bama@dol.ufrn.br
ABSTRACT
During June 1999 to June 2000 one hundred and forty seven females of Hoplosternum littorale Hancock, 1828 were collected from the Curiaú River, Macapá, Amapá, Brazil. The objective of this study was to determine the fecundity and the type of spawning of H. littorale. Analysis of the percentage distribution of the oocyte diameter softh e females, in five different stages of gonadal development, showed that this species is a total spawner. There were two different size graups of oocytes with synchranic development. The total fecundity varied from 9, 144 to 31, 698 mature oocytes.The fecundity, when related to total length and weight, showed that it increases with the enhance in total length and weight.
Key words: Osteichthyes, Siluriformes, Hoplosternum littorale, fecundity, typeof spawning
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Recebido em 13.V.2002; aceito em 08.X.2002.
- CSIRKE, J. 1980. Introducción a la dinámica de poblaciones de peces. Doc. Pesca, FAO, (192): 1-82.
- FERREIRA, E.J.G. & G.M ..SANTOS.1999. Peixes da Bacia Amazônica. In: R.H. LOWE-McCONNELL (Ed). Estudos Ecológicos de Comunidades de Peixes Tropicais. São Paulo, EDUSP, 344p.
- SIMPSON, A.C.1951. The fecundity of the plaice. Fish. Invest., London, (2) 17 (5):1-27.
- VAZZOLER, A.E. A.M. 1996. Biologia de reprodução de peixes Teleósteos: Teoria e Prática. Maringá, EDUEM, 169p.
Datas de Publicação
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Publicação nesta coleção
03 Jun 2009 -
Data do Fascículo
Dez 2002
Histórico
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Aceito
08 Maio 2002 -
Recebido
13 Maio 2002
