Position: Home > Articles > An explanation on poorer harvest of flying squid in the North Pacific in 2001
Journal of Fisheries of China
2003,27
(4)
350-357
北太平洋巴特柔鱼渔业2001年低产原因分析
作 者：
沈建华;韩士鑫;崔雪森;黄洪亮;周甦芳;樊伟;董玉来;高丹枫
单 位：
中国水产科学研究院东海水产研究所
关键词：
巴特柔鱼;减产原因;北太平洋
摘 要：
中国在1993年开始试捕北太平洋巴特柔鱼后,数年间在该海域无论是船只数也好(年年维持在三、四百艘左右),渔获量也好(年产量在10×104t左右),中国的鱿钓船队已发展成为该渔业的主要生产力量。但2001年却遇到了前所未有的挫折,年产量跌到7×104t多。通过对2001年的渔海况进行综合分析研究,结果表明2001年度从海况方面而言,2001年存在的不利于柔鱼生长、集群的因素主要有:黑潮大蛇行、黑潮势力偏弱、北部水温过低和渔汛期流隔不明显。从资源情况而言,西部资源较大幅度的下降是使得渔获量减少的主要原因。而饵料不足也是渔获量降低的原因之一。此外,对东部渔场鱿鱼洄游、分布规律了解不够,使得这一群体未得到充分利用。所以,2001年低产是多方面因素造成的,且在不同海区其主要原因各不相同。
译 名：
An explanation on poorer harvest of flying squid in the North Pacific in 2001
作 者：
SHEN Jian-hua, HAN Shi-xin, CUI Xue-sen, HUANG Hong-liang, ZHOU Su-fang, FAN Wei, DONG Yu-lai, GAO Dan-feng (East China Sea Fisheries Institute, Chinese Academy of Fishery Sciences, Shanghai200090, China)
关键词：
Ommastrephes bartrami; reason for poor harvest; the North Pacific
摘 要：
Though the Chinese fishing fleets had successfully harvested flying squid in the North Pacific in recent years, they met the great problem in 2001. In order to illustrate the reason of severer reduction in harvest, the environment structure, the dorsal mantle length compositions of flying squid and the stomach contents of some harvested squid have been analyzed. The wandering of Kuroshio in south of Japan, the puniness of Kuroshio, and the cooler of the water in the northern part of the ocean are the known disadvantages in hydrologic structure. The reduction in abundance of flying squid in the western part of the ocean was the important reason for declining of the catch in the area. The poor food abundance happened to be another unfavorable factor. But in the eastern part of the ocean, what worked most on the failure of production was the poor acknowledge of the schools, which caused an earlier withdrawal of fishing vessels from the waters when there were some difficulties in searching of the schools.
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