Descrição do ciclo reprodutivo de Donax hanleyanus (Bivalvia, Donacidae) no sul do Brasil

Iheringia. Série Zoologia

Guacira M. Gil¹  José W. Thomé¹ 

[1] ,Pontifícia Universidade Católica do Rio Grande do Sul Laboratório de Malacologia Porto Alegre RS ,Brasil

关键词: Donax;    reproductive cycle;    spawning season;   

DOI  :  10.1590/S0073-47212004000300008

来源: SciELO

【 摘 要 】

The changes in gonadal development in male and female of Donax hanleyanus Philippi, 1847 are described. Gonad development and spawning seasons were assessed by monthly sampling of population from Arroio Teixeira beach, southern Brazil. Histological examination of clams showed in the most of the adult population sampled that the spawning is practically continuous, without any period of sexual rest. There are two main periods of gametogenesis, in winter and in summer, being the degree of maturation longer in the latter. The water temperature is stimulant on gametes proliferation and spawning.

【 授权许可】

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