对东海区拖虾作业休渔期的商榷

根据对历年来东海虾类资源调查和社会调查资料分析 ,提出实施拖虾作业休渔措施的必要性。分析认为 :虾类资源是多种类组成的捕捞对象 ,不同种类生态属性不同、分布海域不同、繁殖期和幼虾出现高峰期不同、渔场和渔期不同等 ,指出拖虾作业休渔期不宜搞一刀切 ,应实行分区管理。北部 (31°0 0′N以北 )以广温广盐种类为主 ,宜实行伏季休渔 ;而南部 (31°0 0′N以南 )以高温高盐种类为主 ,宜在 4～ 5月份休渔。为有利于管理 ,可把拖虾休渔管理权下放给各省 ,由各省根据本省的实际情况确定具体的休渔时间。

Discussion on the closed fishing season of shrimp trawl in the East China Sea

The necessity of a closed fishing season of shrimp trawl was raised according to the analysis of survey of shrimp resources in the East China Sea and relative social investigation data over the years. The paper also pointed out that the period of a closed fishing season of shrimp trawl operation should be staggered in management on different area instead of one period based on the analysis of diversified shrimp resource, different ecological characteristics, different distributing area, different propagation period and peak period of young shrimp appearance. So it is appropriate to set up a summer closed season in the north (to the north of 31°00′N) containing eurythermal and euryhaline shrimp and a closed season in April-May in the south-west (to the south of 31°00′N) containing high-temperature and high-salinity shrimp. The management right on the closed fishing season of shrimp trawl was suggested to be transferred to each province for the sake of more rational management and each province will determine an exact closed fishing period according to its own condition.