(Fecundity and fertility of Macrobrachium amazonicum (Heller, 1862 (Crustácea, Decapoda) in laboratory)

Authors

  • Vera Lucia LOBÃO Pesquisador Cientí­­fico - Seção de Aquicultura - Instituto de Pesca - Bolsista do CNPq
  • Nilton Eduardo Torres ROJAS Professor Assistente do Depto. de Biologia Aplicada Á  Agronomia da Faculdade de Ciências Agrárias e Veterinárias -UNESP
  • Wagner Cotroni VALENTI Universidade Estadual Paulista, Centro de Aquicultura (UNESP) http://orcid.org/0000-0002-8526-1052

Keywords:

NíO CONSTA

Abstract

Macrobrachium amazonicum is a South American freshwater endemic species. Fecundity, fertility and hatching rate were studied in 133 females maintained in laboratory. Those data were related with length and weight; the absolute fecundity varied between 178 and 1,344 eggs in females of 38 to 67 mm and 0.620 to 2.650 g. This result is lower than that of other Macrobrachium species of commercial interest. This fact is compensated by their reproduction all the year round with monthly hatching. The hatching rate is about 40% for specimens with average length near 55 mm. The larval number varied between 21 and 1,848 in females of 45 to 78.5 mm and 0.620 to 2.980 g. Fecundity, hatching rate and fertility increase according to female size.

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Published

2018-06-25

Issue

Vol. 13 No. 2 (1986): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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