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Revista Brasileira de Zoologia

Print version ISSN 0101-8175

Rev. Bras. Zool. vol.18 no.2 Curitiba June 2001 

Aspectos da reprodução e dinâmica populacional de Chione pubera (Bory Saint-Vicent) (Bivalvia, Veneridae) no sul do Brasil


General features of the reproduction and population dynamics of Chione pubera (Bory Saint-Vicent) (Bivalvia, Veneridae) in South Brazil



Carlos Alberto BorzoneI; Kelly Midori VargasI; Paulo Ricardo PezzutoII; Yara Aparecida Garcia TavaresI

ICentro de Estudos do Mar, Universidade Federal do Paraná. Avenida Beira Mar, Pontal do do Sul, 83255-000 Pontal do Paraná, Paraná, Brasil
IICentro de Ciências Tecnológicas, da Terra e do Mar, Universidade do Vale do Itajaí. Caixa Postal 360, 88302-202 Itajaí, Santa Catarina, Brasil




Material collected with a 2-meter wide beam trawl during eight surveys conducted from December 1995 to February 1997 was used for a first preliminary description of the reproduction and population dynamics of the edible venerid bivalve Chione pubera (Bory Saint-Vicent, 1827). Greatest catches were found between 30 to 35 meters depth, on fine sandy bottoms with a mud content lower than 10%. Dry weight meat condition index showed highest values during autumn and lowest values from winter to summer months. Histological analysis of gonadal tissue showed a continuous reproduction, with peaks of maturation on autumn and spring, Spawning was related with the increase of water temperature, that occurs twice a year in the region as a consequence of a particular hydrological characteristic of the inner continental shelf. Size frequency distribution showed a unique principal mode with slow if any displacement through time, indicating a long lived species.

Key words: Chione pubera, reproduction, venerid, south Brazil



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AGRADECIMENTOS. Este trabalho recebeu apoio através de Bolsa de Demanda Social CAPES (PRP) e Bolsas de Pesquisa (CAB) e Iniciação Científica PIBIC (KMV) do CNPq.



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Recebido em 16.III.2000; aceito em 24.IV.2001.

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