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本文根据1998～1999年在闽东北外海进行四个季度月的蟹类资源定点调查及相关资料,研究调查海区蟹类种类组成。结果表明:本调查海区蟹类组成有51种,隶属11科34属,以暖水性种类为多,具有热带与温带群落之间的过度性混合群集特点,主要渔获种类有细点圆趾蟹、光掌蟳、锈斑蟳等10种;其中细点圆趾蟹是本调查海区最主要渔获种类,主要分布于水深100～120m的海域,渔获量占蟹类总渔获量的54.4%,尚有一定资源潜力,待于合理开发利用。
Based on the investigation of crab resources in four seasons in 1998 and 1999 in the open sea of northeastern Fujian Province and related data, the paper studied the species compositions of crabs in the sea area. The results showed that there were 51 species of crab in the study area, belonging to 11 genera and 34 genera. Most of them were of warm water species. They had the characteristics of over-mixed cluster between tropical and temperate communities, In this study, the most abundant species were round-toed crabs, which were mainly distributed in the sea area of 100-120m depth. The catch accounted for 54.4% of the total catch of crabs. A certain resource potential, to be rational development and utilization.