Artigo
Fecundity in Portunus spinimanus Latreille, 1819 (Crustacea, Brachyura, Portunidae) from Ubatuba, São Paulo, Brazil.
Fecha
1997-09-01Registro en:
Interciencia. Caracas: Interciencia, v. 22, n. 5, p. 259-263, 1997.
0378-1844
WOS:A1997YC81900006
5796474012293654
Autor
Universidade Federal de Sergipe (UFS)
Universidade Estadual Paulista (Unesp)
Resumen
The object of this work was to study the conditions of embryo development and egg production in Portunus spinimanus Latreille, 1819 at Ubatuba region of Brazil. The number of eggs laid by 21 females in a range of size was determined. Eggs at 3 differ ent stages of embryonic development were measured P. spinimanus fecundity varied between 188,065 and 682,992, with an average of 429,676 +/- 157,203, for animals with a carapace width ranging from 56.2 to 86.6 mm. Between the initial and final stages of development there was an increase of 55.1% in egg diameter. The relatively high fecundity of P. spinimanus may be a strategy of the species faced with a high mortality rate in the larval phase; however this hypothesis should be tested.