长江上游长鳍吻鮈的种群特征及其物种保护  

Population characteristics and species conservation of Rhinogobio ventralis in upper reaches of Yangtze River

作　　者：辛建峰[1,2,3] 杨宇峰[1] 段中华[2,3] 刘焕章[2,3] 

机构地区：[1]暨南大学水生生物研究所,广州510632 [2]中国科学院水生生物研究所,武汉430072 [3]中国科学院水生生物多样性与保护重点实验室,武汉430072

出　　处：《生态学杂志》2010年第7期1377-1381,共5页Chinese Journal of Ecology

基　　金：中国科学院知识创新工程重大项目(KZCX1-YW-08-01);国务院三峡工程建设委员会办公室生态环境资助项目(SX2007-019)

摘　　要：根据2005—2007年对长江上游攀枝花、宜宾、合江、木洞、万州江段渔业资源调查资料,运用体长频率分析法(FiSATⅡ软件)对长鳍吻鮈的生长、死亡参数进行估算。结果表明:长鳍吻鮈的体质量与体长的关系式为W=8×10-6L3.1577;用Shepherd技术拟合vonBertalanffy生长方程的各参数为L∞=530.5mm,K=0.21a-1,t0=-0.5a;根据Pauly经验公式得出自然死亡系数M=0.24,以长度变换渔获曲线法估算总死亡系数Z=2.67,捕捞死亡系数F=2.43;种群补充模式表明,长鳍吻鮈每年5—9月为主要补充期,开发率E=91.2%,长鳍吻鮈处于资源过度利用状态。Based on the 2005-2007 investigation data of fishery resources in Panzhihua,Yibin,Hejiang,Mudong,and Wanzhou of the upper reaches of Yangtze River,and by using length-frequency method （FiSAT Ⅱ package）,this paper estimated the growth and mortality of Rhinogobio ventralis.The regression equation of the body weight and body length of R.ventralis could be expressed as W=8×10-6L3.1577,and the parameters in von Bertalanffy formula estimated by Shepherd’s method were L∞=530.5 mm,K=0.21 a-1,and t0=-0.5 a.The natural mortality coefficient calculated with Pauly’s empirical equation was M=0.24,the total mortality coefficient estimated by the length-converted catch curve was Z=2.67,and the fishing mortality coefficient was F=2.43.Recruitment pattern analysis indicated that R.ventralis had a recruitment period from May to September,its exploitation rate in recent years was 91.2%,and its resource was at the state of overexploitation.

关 键 词：长江 长鳍吻鮈 生长 死亡 开发率 

分 类 号：S917.4[农业科学—水产科学]