摘要
本文根据1998年5月（春）、8月（夏）、11月（秋）和1999年2月（冬）在东海南部海域的蟹类资源调查资料，结合近年相关渔业调查数据，研究分析了该渔场蟹类的种类组成、地理和区系分布及其数量分布的特点．结果表明该渔场蟹类有63种，隶属13科、38属，以热带和亚热带暖水性种为主，属印度-西太平洋区系中的中-日亚区，与南海关系最为密切，而与黄、渤海关系较为疏远．蟹类分布遍及整个调查海区，但时空分布差异明显，调查海区东南部和沿27°45’N一带海域，平均资源密度指数以夏季最高，达276．8kg／km^2，秋季最低，仅为40．1ks／km^2；同时蟹类数量分布与水深有较大的关系，以水深100～120m海域数量最大，这与主要种类细点圆趾蟹的分布海域区域明显相关；具有开发利用价值的经济种类有十几种，其渔获量占蟹类总渔获量83％，在渔业产量中占主导地位的为细点圆趾蟹、光掌蟳、锈斑蟳和武士蟳等．
According to the data of crab resources obtained in south East China Sea（26°00＇～28°00＇N, 120°00＇～ 125°30＇E）in 4 seasons during 1998 to 1999, and among the other data,this paper studied the species composition, geographical and faunal characteristics, biomass distribution of the crabs in this region. A tatal of 63 species recorded belongs to 13 families and 38 genuses. Most of them are tropical and subtropical warm water species and are the species of China-Japan subregion of Indiawestern Pacific Ocean section. They are much closer to South China Sea, and a bit far from the Yellow Sea and Bohai Sea. The crab population distributes all around the investigated waters, but distributions in time and space are obviously different. The crabs distributes mainly in the southeast and near the waters at 27°45＇N, the highest CPUE found in summer with value of 276.8kg/km^2, and the lowest in autumn of merely 40.1 kg/km^2. At the same time, biomass distribution of crabs is mostly related with water depth and maximized in water layer of loo to 120m and secondly of 80 to 100m. No less than 10 economic species are identified which is around 83% of the total yield of crabs. The dominant species are and Charybdis miles, among them Ovalipes punctatus, Charybdis feriatus, Charybdis riversandersoni Ovalipes punctatus is the leading species in the fishery production.
出处
《台湾海峡》
CAS
CSCD
北大核心
2006年第3期381-387,共7页
Journal of Oceanography In Taiwan Strait
基金
国家海洋勘测专项资助项目(HY126-02-05)
关键词
海洋生物
蟹类
种类组成
分布特征
东海南部海域
marine biology
crabs
species composition
distribution characteristics
south East China Sea
