摘要
根据我国10多个主要渔业公司1971-1982年间白姑鱼(Argyrosomus argentatus)捕捞统计资料,从产量分布,鱼群移动等方面,研究了东黄渤海白姑鱼的种群划分和洄游路线。结果显示,我国沿海白姑鱼可分为2个种群。其中,黄渤海种群越冬场主要在黄海中部34°00'N以北水域。每年3-4月份,鱼群陆续进入山东半岛的乳山沿海、渤海各海湾、黄海北部沿岸和海州湾产卵。栖息在渤海的白姑鱼9-11月份在渤海中部索饵,形成越冬群体,11月后绕过成山头向越冬场洄游,12月至1月份到达越冬场;东黄海种群越冬场主要是在东海外海和中南部近海。每年3-4月份东海外海白姑鱼向西进入舟山渔场。在舟山渔场,这部分鱼群与从东海中南部近海北上的产卵群体汇合,向西进入舟山群岛沿海水域产卵。到了5月份,在浙江北部近海形成索饵群体。6-8月份,索饵群体经过长江口北上黄海南部近海索饵,9月份,索饵群体前锋到达34°00'N禁渔线外侧。此后,索饵场的白姑鱼向南做越冬洄游,并在10月份回到长江口。从这里,一部分群体游向外海越冬场,一部分群体继续南下回到东海中南部近海的越冬场。另外,在东海中南部近海越冬群体,部分就近游向沿岸的海湾,河口产卵,产卵后在产卵场外侧索饵,冬季回到就近的越冬场。
Populations and migratory routines of the white croacker,Argyrosomus argentatus,in the north China waters,including the Bohai Sea,the Yellow Sea and the East China Sea,were re-analyzed with fishing data collected during 19711982.Two populations,i.e.the Yellow Sea-Bohai Sea population（YSBSP） and the Yellow Sea-the East China Sea（ECS） population（YSESP）,were identified in the investigation area.Peak yield of YSBSP occurred in October and November during which the fish school was located in the mid Bohai Sea and the southern waters off the Shandong Peninsula in the Yellow Sea.The fish school of YSESP occurred greatly from June to August in waters off Changjiang Estuary where their feeding grounds were located.The wintering grounds of two populations did not overlap each other.The distinct geographic distribution patterns suggest that the two populations are different in thermal adaptation.The YSBSP is of characters of temperate warm water species while the YSESP is more likely to be warm water species.Moreover,the directions of their spawning migration were different as well.The YSBSP migrated towards northwest while the YSESP towards southwest.The YSBSP overwintered in north waters of 34°00＇N in the mid Yellow Sea.Afterwards they migrated into the coastal waters of the Bohai Gulfs,the Yalv Estuary,the Shandong Peninsula and the Haizhou Gulf for spawning in March and April.After spawning,they grew up in the waters nearby spawning ground from May to September,and aggregated in October to November to migrate towards the wintering ground,and arrived there in January.For the YSESP,offshore waters of the East China Sea as well as nearshore waters in the mid-southern East China Sea were two major overwintering grounds.The offshore group began spawning migration during March and April towards west Zhoushan Fishing Ground,in which they merged with the fishes came from the the nearshore group,and continued to migrate northward into the waters of Zhoushan and the Changjiang Estuary for spawning in May.After spawning,the fishes moved north to nearshore waters of the south Yellow Sea and grew up there from May to September.With influence of cold northwest monsoon after October,the population returned to the Changjiang Estuary.From there,fishes split into two major groups,one migrated eastward back to wintering ground in offshore waters,another moved back to the wintering ground in nearshore waters in the mid-southern East China Sea.In addition,part of nearshore group never migrated into the Yellow Sea,and grew up in waters nearby the spawning ground.
出处
《生态学报》
CAS
CSCD
北大核心
2010年第23期6442-6450,共9页
Acta Ecologica Sinica
基金
我国近海海洋综合评价项目(908-02-01-03)
国家自然科学基金资助项目(40776047)
关键词
白姑鱼
洄游
捕捞统计
东海
黄海
渤海
Argyrosomus argentatus
migration
population
East China Sea
Yellow Sea
Bohai Sea
