台湾海峡和邻近海域莹虾类的分布及其与渔业的关系

DISTRIBUTION OF LUCIFER AND ITS RELATION TO FISHERY IN TAIWAN STRAIT AND ITS ADJACENT AREAS

本文记述了1975年至1984年台湾海峽及邻近海域莹是数量的季节变化和平面分布。分析了莹虾的数量变化与蓝圆鲹Decapterus maruadsi Temminck. et. schlegel等中上层鱼类的渔获量变动的关系,和莹虾密集区分布与鱼类索饵洄游路线、中心渔场的分布等的关系。对水文因素—莹虾—鱼群三者之间的关系进行了初步探讨。

The seasonal variation of abundance of Lucifer in Taiwan Strait and its adjacent areas shows it’s maximum in June to September,and minimum in February.The zone of high abundance(>100 ind./m^3)of Lucifer was found off Taishan and in Taiwan Shoal.The suitable ranges of water temperature and salinity for the occurrence of Lucifer intermedius Hansen were 23.0—28.5℃and 32.0—34.5 respectively.The variation of abundance of Lucifer and catch of Decapterus maruadsi Temmirick.et.Schlegel and the other pelagic fishes tended to be similar.The feeding migration of Decapterus maruadsi and the shift of high abundance area of Lucifer coineided in the same direction.The suitable ranges of water temperature and salinity for the occurrence of Lucifer were Similar to those for pelagic fishes.These demonstrate that Lucifer can serve as a good indicator of the presence of the core of pelagic fishing ground.