水产学报2018，Vol.42Issue(3)：345-355,11.DOI:10.11964/jfc.20151010105
北太平洋长鳍金枪鱼卵巢的发育特征
Ovarian development characteristics of North Pacific albacore tuna(Thunnus alalunga)
摘要
Abstract
Based on 364 ovarian samples of North Pacific albacore tuna(Thunnus alalunga)collected in the north Pacific waters (29°08'–41°08′ N, 163°50′–144°19′ W) from October 2013 to February 2014, using histological ana-lysis, the present study describes oocyte and ovary developmental stage of albacore tuna. The results show that North Pacific albacore is a species of the batch spawning type due to different development stages of oocytes found in the same ovaries. Histologically, the oocyte development of North Pacific albacore can be divided into six phases, and ovarian development into six periods. GSI (gonad somatic index) increases with the mature period dur-ing the stages I–V, and decreases in the stage VI. The spawning peak is from the middle December to early Janu-ary, the GSI increases with the decreasing of latitude but no significant difference can be found. The present study can provide biological information for the stock assessment and sustainable development of north Pacific albacore fisheries, by analyzing the growth characteristics of albacore ovaries.关键词
长鳍金枪鱼/卵巢/发育特征/成熟指数/北太平洋Key words
Thunnus alalunga/ovary/development characteristics/GSI(gonad somatic index)/North Pacific Ocean分类
农业科技引用本文复制引用
朱伟俊,许柳雄,江建军,林东明..北太平洋长鳍金枪鱼卵巢的发育特征[J].水产学报,2018,42(3):345-355,11.基金项目
农业部渔业渔政管理局太平洋长鳍金枪鱼资源探捕项目(D-8006-13-8012) （D-8006-13-8012）
农业部渔业局渔业观察员项目(D-8002-13-8005A)Pacific Albacore Resource Exploration,Bureau of Fisheries and Fishery Law Enforcement,Ministry of Agriculture(D-8006-13-8012) （D-8002-13-8005A）
National Fisheries Observer Programme,Bureau of Fisheries and Fish-ery Law Enforcement,Ministry of Agriculture(D-8002-13-8005A) （D-8002-13-8005A）
