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根据调查得知,浙江近海蟹类资源丰富、种类繁多,在渔业上具有开发利用价值的约有8～9种。80年代以前利用较多的主要是三疣梭子蟹,而其它蟹类资源利用甚少。进入80年代以后,由于近海多种经济鱼类资源衰退,促使作业结构调整,恢复了流刺网作业,发展了桁杆拖虾。90代以后,兴起蟹笼作业,蟹类资源不断得以开发利用,渔获产量迅速提高。目前三疣梭子蟹已过度利用,而细点圆趾蟹、锈斑(虫寻)、日本(虫寻)、武士(虫寻)等蟹类资源呈上升趋势,群体结构发生了明显变化。本文在全面了解浙江省蟹类资源利用现状的基础上,提出了一些合理化建议。
According to the survey, Zhejiang offshore crabs are abundant in resources and have a wide range of species. There are about 8-9 species in the fisheries that have the value of exploitation and utilization. Before the 1980s, the main use of Portunus trituberculatus, while other crab resources to use very little. Since the 1980s, as a result of the decline in the resources of various coastal economically-intensive fish species, the structural adjustment of operations has been resumed, the operation of streamers has been resumed and the trailing shrimp has been developed. After 90 generations, the rise of crab cage operation, crab resources continue to be developed and utilized, catch yield increased rapidly. At present, Portunus trituberculatus has been over-utilized, while crabs such as Round-toed crabs, Spotted rusts, Insects, Insects and Insects are on the rise, and the population structure has undergone significant changes. Based on a comprehensive understanding of the status quo of utilization of crab resources in Zhejiang Province, this paper put forward some reasonable suggestions.