水产学报2017，Vol.41Issue(9)：1407-1414,8.DOI:10.11964/jfc.20151010132
印度洋公海海域黄鳍金枪鱼鱼体脂肪含量与生物学参数的关系
Relationship between muscle fat content and biological parameters in Thunnus albacares in the high seas of the Indian Ocean
摘要
Abstract
The relationships between muscle fat content and biological parameters of the yellowfin tuna (Thunnus albacares) were studied to determine if there were any relationships between them and to better understand its characteristics of growth,reproduction and the fishing ground.The biological data and muscle fat content of 91 yellowfin tuna were collected from the longline fishery in waters of 6°33rN～10°33′S,44°54′E～68°32′E,Western Central Indian Ocean from October,2013 to April,2014.Histogram count figures were obtained to show the spatial or temporal distribution of fat content and fat content by gender,dressed weight,and gonad maturity.A generalized additive model (GAM) was used to analyze the relationships between fat content and condition factor (K),somatic index (SI),gonadosomatic index (GSI) and fork length (FL).Results showed that:①the fat content ofyellowfin tuna was in the range of 0.1％-26.7％,and the average was 6.94％;② the fat content ofyellowfin tuna was low from October to December,2013,and then was increasing after December,2013.The fat content of (2°N～3°N,59°E～60°E) was the highest (15.3％) and that of (7°S～8°S,44°E～45°E) was the lowest (1.2％),and there was significant differences among them;③ there was no significant difference among the fat contents by gender,gonad weight,gonad maturity stages or fork length;④ By GAM,the results showed that there was no significant correlation between fat content and K,SI,GSI or FL.Results of this study suggest that:① the yellowfin tuna begin to reproduce in March and April;② the area of 2°N～3°N,59°E～60°E might be an important spawning ground;③ there was no significant correlation between female reproductive capacity and muscle fat content.关键词
黄鳍金枪鱼/脂肪含量/生物学参数/印度洋公海Key words
Thunnus albacares/muscle fat content/biological parameters/high seas of the Indian Ocean分类
农业科技引用本文复制引用
宋利明,沈智宾,季诚..印度洋公海海域黄鳍金枪鱼鱼体脂肪含量与生物学参数的关系[J].水产学报,2017,41(9):1407-1414,8.基金项目
国家“八六三”高技术研究发展计划(2012AA092302) （2012AA092302）
高等学校博士学科点专项科研基金联合项目(20113104110004) （20113104110004）
上海市教育委员会科研创新项目(12ZZ168)National High Technology Research and Development Program (2012AA092302) （12ZZ168）
Doctoral Program of Higher Joint Research Fund (20113104110004) （20113104110004）
Shanghai Education Commission Research and Innovation Project (12ZZ168) （12ZZ168）
