摘要
1999年10月～2003年6月,作者在赛里木湖采集高白鲑Coregonuspeled标本424尾,并对其年龄和生长状况进行了研究。结果表明:以鳞片作为年龄鉴定的依据,高白鲑的年轮特征为切割型;对鳞片新年轮逐月出现率进行分析,表明高白鲑的年轮形成主要出现在6月份;赛里木湖中的高白鲑有5个年龄组,经计算得出其鳞径与体长的回归方程为L=6.5696+6.1518R(r=0.997),运用此公式获得1+～4+龄组高白鲑的平均逆算体长L1=16.3cm,L2=27.4cm,L3=33.4cm,L4=37.4cm;体长与体重的回归方程为W=0.001462L3.7973(r=0.915);3+龄以上的高白鲑,其生长常数和生长指标均随年龄的增长而下降。
The scales were used for age determination of Coregonus peled. The materials were collected in the Salimu Lake in June 1999 October 2003. It was found that new annual ring began to appear mostly May to August. The composition in age of Coregonus peled of the Salimu Lake was 0 +-4 +. The relation between body length and the radius of the scale is described by the equation: L=6.5696+6.1518R (r=0.997). The length-weight relation of Coregonus peled is computed from the equation:W=0.001462L 3.7973 (r=0.915).The fastest growth rate of the fish is at 1-2 years old. Maturating and spawning begins at 3 years old.The growth rate reduces after maturation.
出处
《大连水产学院学报》
CSCD
北大核心
2005年第2期100-104,共5页
Journal of Dalian Fisheries University
基金
新疆科技成果转化专项资金资助项目(2003-54-104)
关键词
赛里木湖
高白鲑
年龄
生长
Salimu Lake
Coregonus peled
age
growth
