浙江近海蟹类资源合理利用研究

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。目前三疣梭蟹已过度利用，而细点圆趾蟹、锈斑Xun、日本Xun、武士Xun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。

STUDY ON RATIONAL UTILIZATION OF CRAB RESOURCES IN THE INSHORE WATERS OF ZHEJIANG

There are abundant resources and numerous kinds of crab in the inshorewaters of Zhejiang. Among them, 8-9 species have commercial utilization. Swimming crab Portunus trituberculatm were more utilized than other species before 1980s. Since then, the depletion of numerous economic fish species resulted in fishing structure adjustment, resuming drift nets fishing, developing shrimp beam trawling. After 1990s crab resources were fully exploited and their catches increased rapidly with the wide use of crab pots. At present, the excess utilization of swimming crab and the evident increasing tendency of other crab resources, such as Ovalipes punctatus, Charybdis feriutus, C. juponica, C. miles have led to the significant change of community structure. Based on the investigation and research of the status quo of crab resources in the inshorewaters of Zhejiang, the paper has proposed some reasonable countermeasures.