中国水产科学Issue(4)：743-749,7.DOI:10.3724/SP.J.1118.2013.00743
秦岭细鳞鲑的年龄与生长
Age and growth of Brachymystax lenok tsinlingensis
摘要
Abstract
We evaluated the age structure and growth characteristics of Brachymystax lenok tsinlingensis based on scale analysis. We collected 397 B. lenok tsinlingensis specimens from Long-xian, Shanxi, between 2009 and 2012. The scale annuli were characterized as the commonly-cutting shape. We observed 5 age groups, with 1−3 year-old individuals accounting for 85.64%of the total samples. There was no significant difference in body length (L) and body weight (W) between females and males and the Von Bertalanffy growth model was Lt=729.38[1−e−0.08(t+0.5)] and Wt=6 288.74[1−e−0.08(t+0.5)]2.968 1. The coefficient of growth (k) was 0.08. The body weight growth inflexion point was at 13.10 years old, with a corresponding body length of 483.66 mm and body weight of 1 857.86 g. The results show that B. lenok tsinlingensis is a species of slow growing fish and it characterizes isometric growth and individual miniaturization in the natural reserve. We should take artificial propagation and artificial releasing to enlarge and revive its populations. The study is intended to realize its growth rhythm and take reasonable actions to protect and vitalize B. lenok tsinlingensis.关键词
秦岭细鳞鲑/年龄/生长/陕西/陇县Key words
Brachymystax lenok tsinlingensis/age/growth/Shannxi/Longxian分类
农业科技引用本文复制引用
..秦岭细鳞鲑的年龄与生长[J].中国水产科学,2013,(4):743-749,7.基金项目
公益性行业(农业)科研专项(201203086) （农业）
中央科研院所基本业务费项目(2011JBFA22) （2011JBFA22）
