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Type: Artigo de periódico
Title: Reproductive Cycle Of The Trigonal Clam Tivela Mactroides (bivalvia, Veneridae) In Caraguatatuba Bay, Southeastern Brazil
Author: Denadai
Marcia R.; Le Sueur-Maluf
Luciana; Marques
Carla G.; Amaral
Antonia C. Z.; Adamo
Isadora; Yokoyama
Leonardo Q.; Turra
Abstract: Tivela mactroides is an important fishery resource for local artisanal fishermen in Brazil and the establishment of management programmes for this species requires information about its reproductive cycle, the main focus of this study. The reproductive pattern of T. mactroides from Caraguatatuba Bay on the southeast coast of Brazil was analysed by means of histological techniques from November 2003 to October 2004. The species had heterogeneous continuous gametogenesis, with no resting period and the sex ratio did not differ significantly from 1:1. Maturity indices varied over the months, with slightly higher proportions of mature gametes from May 2004 to October 2004, which indicates a high proportion of spawning in winter and spring; however, small releases of gametes may also have occurred during summer and autumn. As the reproductive cycle is heterogeneous and temporal seasonality in gametogenesis is not predictable, it is not possible to designate a closed fishing season for the present population as a management strategy to avoid overexploitation.
Subject: Management
Country: OSLO
Citation: Reproductive Cycle Of The Trigonal Clam Tivela Mactroides (bivalvia, Veneridae) In Caraguatatuba Bay, Southeastern Brazil. Taylor & Francis As, v. 11, p. 847-858 2015.
Rights: embargo
Identifier DOI: 10.1080/17451000.2015.1024130
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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