• 首页关于本刊期刊订阅编委会作者指南过刊浏览
王永明,谢碧文,邹远超,王芳,岳兴建,齐泽民,王淯,吴英.2015.沱江宽体华鳅的年龄与生长.动物学杂志,50(2):221-230.
沱江宽体华鳅的年龄与生长
Age and Growth of Sinibotia reevesae in the Tuojiang River
投稿时间:2014-05-06  修订日期:2015-03-12
DOI:DOI: 10.13859/j.cjz.201502008
中文关键词:  宽体华鳅  沱江  年龄  生长
英文关键词:Sinibotia reevesae  the Tuojiang River  age  growth
基金项目:四川省教育厅重大培育项目(No. 09ZZ012)、四川省省属高校科研创新团队(No. KYTD201009)、四川省科技支撑项目(No. 2011NZ0075)资助
作者单位E-mail
王永明 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室 wym8188@126.com 
谢碧文 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室 xiebw6873@163.com 
邹远超 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室  
王芳 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室  
岳兴建 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室  
齐泽民 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室  
王淯 长江上游鱼类资源保护与利用四川省重点实验室 特色农业资源研究与利用四川省高校重点实验室  
吴英 内江市第六中学  
摘要点击次数: 1313
全文下载次数: 1639
中文摘要:
      2010年4~11月,在沱江的资中-隆昌段采集宽体华鳅(Sinibotia reevesae)573尾,研究了其年龄结构和生长特性。结果表明:微耳石厚度适中,易于磨片,且磨片后轮纹清晰,能准确反映宽体华鳅的年龄情况。收集到的沱江宽体华鳅体长主要分布在80~100 mm,占总数的67.54%;体重主要分布在8~20 g,占总数的69.11%;年龄由2~6龄组成,以3~4龄为主,占85.91%;种群雌雄性比为1︰1.11。体长(L,单位mm)和体重(W,单位g)关系,雌雄群体间无明显差异(P>0.05),其表达式为W = 5×10-6L3.2868(n=573,R2 = 0.820 2),为近等速生长类型。von Bertalanffy生长方程为Lt = 128.72[1﹣e﹣0.1974(t 1.66)]和Wt = 42.95[1﹣e﹣0.197 4(t 1.66)]3.286 8。体长生长速度和加速度方程为dL/dt = 25.413 3 e-0.197 4 (t 1.66)和d2L/dt2 =﹣5.015 8 e﹣0.197 4 (t 1.66),体重生长速度和加速度方程为dW/dt = 27.866 6 e﹣0.197 4 (t 1.66) [1﹣e﹣0.197 4 (t 1.66)]2.286 8和d2W/dt2= 5.500 9 e﹣0.197 4 (t 1.66) [1﹣e﹣0.197 4 (t 1.66)]1.286 8×[3.286 8 e﹣0.197 4 (t 1.66) ﹣1]。生长拐点年龄为4.37,此时的体长和体重分别为89.46 mm和12.99 g。分析显示,沱江资中-隆昌段宽体华鳅自然种群资源未遭到严重破坏,但合理开发水电资源和选择合适的渔具、渔法是进行其资源保护的最有效措施。
英文摘要:
      Sinibotia reevesae is an endemic fish which lives only in the upper reaches of the Yangtze River. The purpose of this study was to determine age structure and growth characteristics of S. reevesae, and to propose effective measures to protect this species. A total of 573 specimens which were monthly collected from April to November 2010 in Zizhong-Longchang section of the Tuojiang River, a tributary river of the Yangtze River. Method:Standard length and body weight of each specimen were measured. Calculation of increment rate and growth indexes of body length and body weight of S. reevesae by Yin Minchen’s methods (1995). The growth of S. reevesae was fitted by the equation of Von Bertalanffy. Statistic analysis of all data were taken using Microsoft excel 2003 and SPSS 19.0. Results: Lapillus moderate thickness and there were clear rings or annuli on it which was the most accurate structure for age determination(Fig. 1). The standard length of the samples mainly ranged from 80~100 mm, accounting for 67.54% of the total (Fig. 2);total weight mostly ranged from 8~20 g and accounting for 69.11% of the tota1 (Fig. 3). Age of the fishes was identified to five age classes (2~6 years old) and individuals of 3~4 years old were dominated with frequency of 85.91% (Fig 4). Sex ratio (♀∶♂) was 1∶1.11. There was a linear correlation between standard body length and otolith radius and the regression equation was L=125.25RO﹣11.706(n=362,R2=0.8023,P<0.01) (Fig 5). The increment rate and growth index were analysised by back-calculated body length and the results showed that significant difference between 2~3 years old and 4~5 years old, among them 2 years old was the highest(Table 1). The relationship between standard length (L,unit mm)and total weight(W,unit g) showed no significant difference between ma1es and females, which could be expressed as: W = 5×10-6L3.2868(n=573,R2 = 0.820 2) (Fig 6). The body length has increased rapidly before 4 years old and the increment rate of body weight was the hightest between 3 and 4 years old(Table 2). The growth of S. reevesae was in a constant speed which can be described with von Bertalanffy equation: Lt = 128.72[1﹣e﹣0.1974(t 1.66)], Wt = 42.95[1﹣e﹣0.1974(t 1.66)]3.286 8. Growth rate and acceleration growth rate equation of body length were dL/dt = 25.413 3 e-0.197 4 (t 1.66) and d2L/dt2 =﹣5.015 8 e﹣0.1974 (t 1.66), respectively. Meanwhile, the growth rate and acceleration growth rate equation of weight were dW/dt = 27.8666 e﹣0.1974 (t 1.66) [1﹣e﹣0.1974 (t 1.66)]2.2868 and d2W/dt2=5.5009 e﹣0.197 4 (t 1.66) [1﹣e﹣0.197 4 (t 1.66)]1.286 8×[3.2868 e﹣0.197 4 (t 1.66)﹣1], respectively. The growth inflexion points was 4.37 years with the corresponding standard body lengths 89.46 mm and body weights of 12.99 g (Fig 7). Our data suggest that the resource of S. reevesae had already been fished properly in Zizhong-Longchang section of the Tuojiang River. However, in order to better protect the resource of S. reevesae, measures such as strict ban to unreasonable catching and exploring the hydropower resources should be enhanced.
附件
查看全文  查看/发表评论  下载PDF阅读器