摘要
根据2010-06—09北太平洋海区柔鱼(Ommastrephe bartrami)的现场调查资料,对其群体组成、胴长与体重的关系、性腺成熟度、摄食等级和渔获产量变化作了初步研究。结果表明:2010-06东部海区(170°～178°W,38°～41°N)优势胴长组为280～300mm,优势体重组为800～1 000g,性成熟度以Ⅲ,Ⅳ和Ⅴ期为主,摄食等级5级均有分布;2010-07—09西部传统渔场海区(150°～157°E,38°～44°N)优势胴长组为200～260mm,体重组为200～600g,柔鱼各项生长指标呈逐日上升趋势,性成熟度以Ⅰ和Ⅱ期为主,摄食等级都以2级以上为主。柔鱼性成熟度群体百分比与高摄食强度呈显著的负相关,即性成熟度越高,摄食等级越低;性成熟度越低,摄食等级越高。
Based on the survey data of neon flying squid （Ommastrephe bartrami） fishery in the North Pa- cific Ocean from May to September in 2010, the population composition, the relationship between mantle length and body weight, gonad maturity, feeding stages and amount of harvest were investigated. Results show, in June in the eastern sea area（170°-178°W,38°-41°N）,280-300 mm was the dominant mantle length, 800-1 000 g was the dominant body weight, gonad maturity was at stage Ⅲ, Ⅳ ,Ⅴ, feeding stages were distributed from 0 to 4 class ; from July to September in the western sea area（150°-157°E,38°- 44°N）, 200-260 mm was the dominant mantle length, 200-600 g was the dominant body weight. During this period, the growth parameters were raising day by day. Gonad maturity was mainly at stage Ⅰ and Ⅱ , feeding stages were primarily above classes 2. There was a significant negative correlation between sexual maturity degree of squid and high intensity of feeding. The higher degree of maturity, the lower feeding level was and vice versa.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2012年第2期257-265,共9页
Advances in Marine Science
基金
国家高技术研究发展计划--大洋渔场渔情信息应用技术系统开发(2007AA092202)
关键词
北太平洋
巴特柔鱼
性腺成熟度
摄食等级
North Pacific Ocean
Ommastrephe bartrami
gonad maturity
feeding stages
作者简介
唐峰华（1982-），男，浙江湖州人，助理研究员，主要从事海洋生态学和渔业资源方面研究．E—mail：f-h-tang．@163．com
通讯作者，研究员，E-mail：fanwee@126．com
