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应用生态学报 ›› 2009, Vol. 20 ›› Issue (08): 1952-1957.

• 研究报告 • 上一篇    下一篇

徐家河水库翘嘴鲌的个体生殖力

覃亮;熊邦喜;吕光俊   

  1. 华中农业大学水产学院| 武汉 430070
  • 收稿日期:2009-01-06 出版日期:2009-08-20 发布日期:2009-08-20

Individual fecundity of Culter alburnus in Xujiahe Reservoir of China.

QIN Liang;XIONG Bang-xi;LÜ|Guang-jun   

  1. College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2009-01-06 Online:2009-08-20 Published:2009-08-20

摘要: 2008年4—6月,在徐家河水库采集性成熟翘嘴鲌雌鱼,取鳞片鉴定年龄(A),测量其体长(L)、体质量(M)和性腺质量(Mo)等形态指标,用称量法计数个体绝对生殖力(F),据此计算体长相对生殖力(FL)、体质量相对生殖力(FM)、成熟系数(GSI)和肥满度(CF)等指标,对徐家河水库翘嘴鲌个体生殖力与形态指标的关系进行了分析.结果表明:调查样本由2+~5+龄组成,个体绝对生殖力与体长、体质量和年龄分别呈幂函数、幂函数和直线相关,体长相对生殖力与体长、体质量和年龄也分别呈幂函数、幂函数和直线相关,而体质量相对生殖力与各形态指标的相关性不显著.多元逐步回归分析结果表明,研究区翘嘴鲌个体绝对生殖力与体质量和性腺质量密切相关,体长相对生殖力与性腺质量、肥满度和成熟系数密切相关,而体质量相对生殖力仅与成熟系数相关.

关键词: 翘嘴鲌, 个体生殖力, 徐家河水库, 分布式水文模型DHSVM, 模型率定, 参数方案

Abstract: In April-June 2008, the matured female Culter alburnus specimens were collected from the Xujiahe Reservoir of China. Their ages were identified by the scales, and their body length, body mass, gonad mass, and other morphological indices were measured. Counted with gravimetric method, the individual absolute fecundity was obtained, and used for calculating the relative fecundity per centimetre, relative fecundity per gram, maturity, relative fatness, and other indices. Based on these measurements and calculations, the relationships between the individual fecundity and the morphological indices of C. alburnus in the Reservoir were studied. The ages of the specimens ranged from 2+ to 5+ years old, and the individual absolute fecundity and relative fecundity per centimetre were exponentially correlated with body length and body mass, and linearly correlated with age. No significant correlations were observed between the relative fecundity per gram and these morphological indices. Multi-regressive analyses showed that the individual absolute fecundity was significantly correlated with body mass and gonad mass, the relative fecundity per centimetre was significantly correlated with gonad mass, relative fatness and maturity, while the relative fecundity per gram was only correlated with maturity.

Key words: Culter alburnus, individual fecundity, Xujiahe Reservoir, distributed hydrological model DHSVM, model calibration, parameter scheme.