北部湾雷州沿岸鱼类资源现状研究  

Studies on status of fishery resources in coastal waters of Leizhou Peninsula in Beibu Gulf

作　　者：孙德雄[1] 刘宣[1] 区又君[2] 李加儿[2] 欧春晓 江海声[1] 

机构地区：[1]华南师范大学生命科学学院,广东广州510631 [2]中国水产科学研究院南海水产研究所,广东广州510300 [3]雷州白蝶贝省级自然保护区管理处,广东雷州524000

出　　处：《热带海洋学报》2008年第3期66-71,共6页Journal of Tropical Oceanography

基　　金：广东省重大科技项目(2003A3050102)

摘　　要：2005年4月和7—8月,采用站位法和底拖网调查法对北部湾雷州沿岸鱼类资源进行调查,共记录247种鱼类,隶属于21目87科161属。研究发现本海域鱼类主要为近岸分布,并表现出热带-亚热带的区系特征,鱼类呈现小型化趋势。9种主要经济鱼类的种群结构合理。鹿斑鲾Leiognathus ruconius、条鲾Leiognathus rivulatus、圆吻海鰶Nematalosa nasus和银鲳Stromateoides argenteus的丰满度系数春季显著大于夏季。部分主要捕获种类未达到最适开捕规格,应该对沿岸海域鱼类资源进行科学管理和合理开发利用。Using gill net and bottom trawl, an investigation on fish stock was carried out, and 247 fish species belonging to 21 orders, 87 families and 161 genera were collected in the coastal waters of Leizhou Peninsula in Beibu Gulf from April to July in 2005. The results indicated that the fish mainly distributed in the nearshore waters and was characterized by tropical-subtropical species. The fish communities took on character of miniaturization. The population structures of 9 commercial fishes were reasonable. The seasonal changes of fatness coefficients of Leiognathus ruconius, Leiognathus rivulatus, Nematalosa nasus and Stromateoides argenteus were very notable. Some of the major capture species were under the optimum first capture standards. It is very necessary to take measures to protect the nearshore fishery resources.

关 键 词：雷州沿岸 生态型 形态特征 小型化 

分 类 号：Q932.4[生物学—微生物学]