摘要
对长江上游特有鱼类厚颌鲂的鳞片和骨组织中的耳石、鳃盖骨、匙骨、基枕骨五种材料的形态结构及年轮特征进行了研究 ,对用不同材料鉴定年龄的优缺点和鉴定结果进行了比较 ,认为鳞片、耳石和基枕骨是鉴定厚颌鲂年龄的较理想材料 ,用鳞片和基枕骨鉴定年龄结果的相符率为 95 5 %;鳞径和骨径均与体长呈线性关系 ,并以鳞片和基枕骨为材料进行了生长退算 ,以骨径进行生长退算更接近于实测值 。
Annual rings on scale, otolith, cleithrum, opercular and basioccipital of Megalobrama pellegrini were detected on 167 individuals collected from the Longxi river, Luzhou, Sichuan Province. The result shows that the definition of the annual on scale, otolith, cleithrum, opercular and basioccipital is high. Age agreement based on scale and basioccipital bone is 95 5%. Correlation between the diameter of basioccipital and body length is linear. So is correlation between the diameter of scale and body length. Back calculated body length based on diameter of basioccipital fits the actual value better. It is recommend that scale and basioccipital be suitable for estimating ages of M.pellegrini.
出处
《动物学杂志》
CAS
CSCD
北大核心
2004年第2期58-61,共4页
Chinese Journal of Zoology
基金
国务院三峡工程建设委员会办公室生态环境补偿经费项目"特有鱼类实验站"资助 (No.SX2 0 0 1 0 1 7 JC 0 1 1 4 0 0 )
