首页 | 本学科首页   官方微博 | 高级检索  
   检索      

乌苏里江哲罗鲑的年龄结构、性比和生长
引用本文:尹家胜,徐伟,曹顶臣,姜作发,匡友谊,李永发.乌苏里江哲罗鲑的年龄结构、性比和生长[J].动物学报,2003,49(5):687-692.
作者姓名:尹家胜  徐伟  曹顶臣  姜作发  匡友谊  李永发
作者单位:中国水产科学研究院黑龙江水产研究所,哈尔滨,150070
基金项目:国家科技攻关 (2 0 0 1BA5 0 5B0 5 0 7),黑龙江省重点科技(GCO1B5 15 )资助项目~~
摘    要:We report the current status of Taimen (Hucho taimen ) population in Wusuli River of China. The amount of catch per year was only 1 800 - 5 400 individuals ranging from 2 - 15 years old during 1998 - 2002. Of all the captured, individuals with sexual maturity were up to 30% - 70% (female maturity at 5 years old and male 6 years old). Sex ratio varied greatly among different localities. Its breeding population mainly consisted of males aged 5 - 10 years and females aged 8 - 13 years‘‘old, which spawned in May each year. Females breed once with about 4 000 - 23 000 eggs produced every 2 - 3 years, Taimen grows fast and average growth rate is about 10 cm per year prior to 10 years‘‘s old, which corresponded with von Bertelanffy‘‘s equation calculated as Lt = 246.41 1 -e 0.0407(t 0.4625)] and Wt = 174 075.72 1 -e ^0.0407(t-0.4622)12.9537, and the relationship between body length and weight was W 0.015018L^u2020.

关 键 词:哲罗鲑  年龄结构  性比  生长  鲑科

Age structure, sex ratio and growth of the Taimen(Hucho taimen) in Wusuli River
YIN Jia Sheng,XU Wei CAO Ding Chen JIANG Zuo Fa KUANG You Yi LI Yong Fa.Age structure, sex ratio and growth of the Taimen(Hucho taimen) in Wusuli River[J].Acta Zoologica Sinica,2003,49(5):687-692.
Authors:YIN Jia Sheng  XU Wei CAO Ding Chen JIANG Zuo Fa KUANG You Yi LI Yong Fa
Institution:YIN Jia Sheng ** XU Wei CAO Ding Chen JIANG Zuo Fa KUANG You Yi LI Yong Fa
Abstract:We report the current status of Taimen (Hucho taimen) population in Wusuli River of China. The amount of catch per year was only 1 800 - 5 400 individuals ranging from 2-15 years old during 1998-2002. Of all the captured, individuals with sexual maturity were up to 30%-70% (female maturity at 5 years old and male 6 years old). Sex ratio varied greatly among different localities. Its breeding population mainly consisted of males aged 5-10 years and females aged 8-13 years'old, which spawned in May each year.Females breed once with about 4 000 - 23 000 eggs produced every 2-3 years. Taimen grows fast and average growth rate is about 10 cm per year prior to 10 years's old, which corresponded with von Bertelanffy's equation calculated as L t=246 411-e -0 0407(t-0 4625) ] and W t= 174 075 72 1-e -0 0407(t-0 4622) ] 2 9537 , and the relationship between body length and weight was W=0 015018L u 2020 .
Keywords:Taimen (Hucho taimen)  Age struture  Sex ratio  Growth
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号