Oocyte quality of tambaqui (Colossoma macropomum) during the reproductive season

Brazilian Journal of Biology

Jm. Galo¹  Rp. Ribeiro¹  Dp. Streit-junior¹  Dm. Albuquerque¹  Dc. Fornari¹  Cfc. Roma¹  Lrj. Guerreiro¹ 

关键词: Characidae;    fertilization rate;    oocytes;    reproduction;    reproductive period;    Characidae;    taxa de fertilização;    oócitos;    reprodução;    período reprodutivo;   

DOI  :  10.1590/1519-6984.10113

来源: SciELO

【 摘 要 】

The study aimed to analyze the Colossoma macropomum reproductive behavior and quality of the female gametes throughout the reproductive season. The experiment was carried out in Pimenta Bueno - Rondônia State (Northern Brazil) during the reproductive season (2010-2011) using 36 females. Each sampling was performed on a 15 ± 5 days interval. Female gametes were collected by stripping and the following analyses were performed: weight of oocytes released (g); productivity index, fertilization and hatching rate. During the sampling period was verified effect (p < 0.05) of collecting time into the season for oocytes weight, productivity index and fertilization rate. Although the period 3 (December) did not differ significantly from other periods, it showed better parameters for the quality of C. macropomum oocytes.

【 授权许可】

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