摘要
根据2008年1—5月智利外海茎柔鱼资源调查中随机采集的663尾样本(雌性464尾,雄性199尾),对其耳石形态特征进行观察与测量。观测表明,茎柔鱼耳石具有长窄的吻区和宽大的翼区。对耳石10项形态参数进行主成分分析,结果显示,耳石总长(TSL)、吻侧区长(RLL)、翼区长(WL)可以作为耳石长度特征的代表,最大宽度(MW)则可代表耳石宽度特征。雌性个体TSL、RLL、WL和MW与胴长(ML)之间为线性关系(Y=a+b×ML)(P<0.05),生长系数b在1.9358—2.9607间,其中MW的最小,WL的最大,耳石各区为均匀生长。雄性个体TSL、RLL、WL和MW与ML之间为幂函数关系(Y=c×MLd)(P<0.05),生长系数d在0.9165—1.1877间,其中TSL生长速度慢于ML,RLL和MW基本与ML一致,WL则快于ML,耳石各区为非均匀生长。
Statolith in cephalopod is an important hard tissue, and understanding its morphology is a basic research issue in fisheries biology. A total of 663 samples （464 females and 199 males） were collected off Chile by Chinese squid jigging boat during January to May 2008 and observed and measured in morphology. The results indicate that the statolith of Dosidicus gigas has a wide wing and long, narrow rostrum domes. The result of principal component analysis on nine morphologic indices shows that total statolith length, rostrum lateral dome length, wing length, and the mutual relation- ships can be used to distinguish among female and male individuals, and that the growth of statolith of male squid is uneven.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2010年第2期233-239,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金项目
40876090号
曙光计划跟踪项目
08GG14号
上海市教委优秀青年基金项目
B-8101-080-0024号
上海市捕捞学重点学科项目
S30702号
关键词
茎柔鱼
耳石形态特征
智利外海
Dosidicus gigas, Morphology characteristic of statolith, The sea off Chile
