【作者】 李建生； 严利平； 凌建忠； 胡芬；

【Author】 LI Jian-sheng,YAN Li-ping,LING Jian-zhong,HU Fen (Key Laboratory of Marine and Estuarine Fisheries Resources and Ecology,Ministry of Agriculture,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai,200090,China)

【机构】 中国水产科学研究院东海水产研究所,农业部海洋与河口渔业资源及生态重点开放实验室；

【摘要】 本文利用2003-2008年夏秋季国有机轮围网在东海中南部海域的生产数据以及2006～2008年的生物学测定资料,对澳洲鲐资源量水平、生物学叉长、渔获重心分布的年变化和渔获产量的空间分布特征进行了研究。结果表明:夏秋季东海中南部澳洲鲐资源量在2005、2006和2008年处于较高的水平,2003和2004年处于正常的水平,而2007年则处于较低的水平。2006和2008年,平均叉长表现为从7月份至9月份逐渐增加的趋势,2007年7-8月份的平均叉长基本没有变化;2007年平均叉长最大,2006年次之,2008年最小;资源量水平和生物学叉长呈现出相反的变化趋势。2003和2004年渔获重心位于浙江南部和福建北部靠近大陆架一侧海域,2006和2008年渔获重心位于浙江南部外海水域,2005和2007年渔获重心位于浙江中北部的外海水域。经度方向,渔获产量集中于123°00’E至126°00’E之间的海域,纬度方向,渔获产量集中于26°30’N至28°30’N之间的海域。更多还原

【Abstract】 In this paper,we studied annual change on the level of the Scomber australasicus resources, biology fork length,the distribution of catches in center of gravity and the characteristics of the spatial distribution of production in summer and autumn 2003-2008 based on the data of production by state-owned large purse-seine in central and southern East China Sea,as well as the data determined of biological information from 2006 to 2008.The results showed that:the Scomber australasicus resources were at a higher level in 2005,2006 and 2008,at a normal level in 2003 and 2004,and then at a relatively low level in 2007 in central and southern East China Sea in summer and autumn.In 2006 and 2008,the average fork length performance was increasing trend from July to September in 2007 there is no change in the average fork length in July and August.Average fork length was the largest in 2007,the second in 2006,the smallest in 2008.The resources level and biological fork length show the opposite change trend.Catches center of gravity was in the waters of southern Zhejiang Province and northern Fujian Province around the side of the continental shelf in 2003 and 2004,the focus is located in the waters off the coast of southern Zhejiang Province in 2006 and 2008,in 2005 and 2007 catches the focus is located in the waters off the coast of the middle and northern part of Zhejiang Province.Longitude direction,the catch production concentrated in the 123°00′E to 126°00′E waters.Latitude direction,the catch production focus on between 26°30′N and 28°30′N waters.更多还原