南海北部海区软骨鱼类种类组成和资源密度分布  

Species composition and resources density of Chondrichthyes in the continental shelf of northern South China Sea

作　　者：黄梓荣[1] 陈作志[1,2] 曾晓光 

机构地区：[1]中国水产科学研究院南海水产研究所,广东广州510300 [2]上海水产大学海洋学院,上海200090 [3]南海区渔政渔港监督管理局,广东广州510080

出　　处：《台湾海峡》2009年第1期38-44,共7页Journal of Oceanography In Taiwan Strait

基　　金：农业部南海区渔政局资助项目(200601);中央级公益性科研院所基本科研业务专项资助(2007YD02);农业部渔业生态环境重点开放实验室开放基金资助项目(200603)

摘　　要：根据2006～2007年南海北部海区4季的调查资料，分析该海区软骨鱼类的种类组成和资源密度的分布．结果表明，软骨鱼类有32种，分隶于9目17科，优势种为斑鳐、曾氏兔银鲛、褐黄扁缸、橙黄鲨；渔获率D断面最高（10．19kg／h），B断面最低（4．52kg／h）；渔获率有明显的季节变动，夏季最高（12．16kg／h），秋季最低（3．71kg／h），平均渔获率为7．05kg／h；密集分布于180m和140m水深处；其年均资源密度为94．00kg／km^2．文中并讨论合理利用和保护该类群的措施．Based on the data obtained in 4 seasonal surveys in northern South China Sea in 2006 and 2007, the species composition and resources density of Chondrichthyes were analyzed. The results showed that there were 32 species belonging to 17 families and 9 orders in the area. Raja kanojei,Hydrolagus isengi, Urolophus aurantiacus, Cirrhoscylliun expolitum were the dominant species. The catch were the highest in transect D （10.19kg/h） and the least in transect B（4.52kg/h）. The catch also showed significant seasonal variations,which were the highest in summer（12.16kg/h） and the least in autumn（3.71kg/h）. The fishes mostly distributed in depth from 140m to 180m and the resource density was estimated 94.00 kg/km^2. The measures for logical Chondrichthyes utilizing and protecting were also discussed in this paper.

关 键 词：软骨鱼类 种类组成 资源密度 南海北部海区 

分 类 号：S932[农业科学—渔业资源]