上海海洋大学学报2011，Vol.20Issue(6)：895-901,7.
东南太平洋智利竹鱼矢耳石的形态特征分析
Study on sagitta morphology of Chilean jack mackerel（Trachurus murphyi） in the southeast Pacific Ocean
摘要
Abstract
A total of 211 Chilean jack mackerel（Trachurus murphyi） were collected by a large-scale trawler named ＂KAIXIN＂ from July to October 2010 in the southeast Pacific Ocean.The morphologic features of their sagittas were observed and measured.The sagittas of Chilean jack mackerel have four parts： front part,back part,dorsal part and ventral part.It has an apparent rostrum which is longer than the antirostrum.The result of principal component analysis on 24 morphologic indices shows that the total sagitta length（L1）,distance from the core to the end（L3）,distance from the end to the antirostrum（L11） and distance from the end to the intersection（L13） can reflect the length features of sagitta,and distance from the core to the ventral（L5）,distance from the end to the ventral（L10）,distance from the ventral to the intersection（L18） and antirostrum length（L23） can reflect its width features.The relationships between the featured-length of sagitta including L1,L3,L11 and L13,and fork length as well as body weight were best described by power functions（P=0 0.05）.Also,the relationships between the featured-width of sagitta including L5,L10 and L18,and fork length as well as body weight were best described by power functions（P=00.05）.Antirostrum length（L23） was best described by exponential functions with fork length as well as body weight（P=00.05）.关键词
智利竹鱼/矢耳石/形态特征/主成分分析/东南太平洋Key words
Trachurus murphyi/sagitta/morphologic feature/principal component analysis/southeast Pacific分类
农业科技引用本文复制引用
吴超,邹晓荣,张敏,张伟,周斌,陆奇巍,徐申南..东南太平洋智利竹鱼矢耳石的形态特征分析[J].上海海洋大学学报,2011,20(6):895-901,7.基金项目
上海市重点学科建设项目 （）
大洋生物资源开发和利用教育部高校重点实验室（上海海洋大学）开放基金 （）
2010年东南太平洋公海西部竹鱼资源探捕项目 （）
