IHB OpenIR  > 水生生物多样性与资源保护研究中心  > 期刊论文
Age, growth and reproduction of Sarcocheilichthys nigripinnis from the Qingyi Stream in the Huangshan Mountains
Yan Yunzhi1; Xu Yinsheng1; Chu Ling1; He Shan1; Chen Yifeng2
2012
Source Publication动物学研究
ISSN0254-5853
Volume33.0Issue:003Pages:E25
AbstractIdentifying the life-history strategies of fish and their associations with the surrounding environment is the basic foundation in the conservation and sustainable utilization of fish species. We examined the age, growth, and reproduction of Sarcocheilichthys nigripinnis using 352 specimens collected monthly from May 2009 to April 2010 in the Qingyi Stream. We found the sex ratio of this study population was 0.58:1 (female: male), significantly different from expected 1:1. Females and males both comprised four age groups. The annuli on the scales were formed during February and March. No obvious between-sex difference was observed in length-weight and length-scale-radius relationships. The total length in back-calculation significantly increased with age for both sexes, but did not differ significantly at each age between the two sexes. An inflection point was observed in the growth curves given by the von Bertalanffy growth function for total weight. At this inflection point, fish were 3.95 years. Both sexes reach their 50% sex maturity at age 2, when females and males were 94.7 mm and 103.0 mm total length. The temporal pattern of the gonado-somatic index corresponded to a spawning period that occurred from April through July. The non-synchronicity of egg diameter in each mature ovary during the breeding period suggested these fish may be batch spawners. The absolute fecundity increased significantly with total length and weight, whereas no significant correlation was observed between the relative fecundity and body size.
Keyword动物学 神经传递素 FMRF 演化 发展
Language英语
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/40509
Collection水生生物多样性与资源保护研究中心_期刊论文
Affiliation1.安徽师范大学
2.中国科学院水生生物研究所
Recommended Citation
GB/T 7714
Yan Yunzhi,Xu Yinsheng,Chu Ling,et al. Age, growth and reproduction of Sarcocheilichthys nigripinnis from the Qingyi Stream in the Huangshan Mountains[J]. 动物学研究,2012,33.0(003):E25.
APA Yan Yunzhi,Xu Yinsheng,Chu Ling,He Shan,&Chen Yifeng.(2012).Age, growth and reproduction of Sarcocheilichthys nigripinnis from the Qingyi Stream in the Huangshan Mountains.动物学研究,33.0(003),E25.
MLA Yan Yunzhi,et al."Age, growth and reproduction of Sarcocheilichthys nigripinnis from the Qingyi Stream in the Huangshan Mountains".动物学研究 33.0.003(2012):E25.
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