摘要
为保护大亚湾渔业资源,2015年4月(春季)、8月(夏季)、10月(秋季)和12月(冬季)对大亚湾进行了4航次底拖网渔业资源调查,结合距最近大陆距离、距最近大岛距离、水深、水温、盐度、叶绿素a、总氮、总磷、鱼类的最大体长和捕捞努力量(CPUE)这些参数,研究了大亚湾鱼类的群聚特征。结果表明,大亚湾鱼类呈嵌套分布格局,鱼类最大体长对嵌套格局的形成具有显著影响;大亚湾鱼类群落嵌套格局的形成支持选择性迁入假说;大亚湾鱼类全年与四季的嵌套最友好位点均在湾口杨梅坑和大辣甲北部海域,此两海域为大亚湾鱼类的主要群聚区,大辣甲北部海域是鱼类的产卵场繁殖区,杨梅坑海域是鱼类的主要育肥区,均应优先进行保护和管理,是开展大亚湾鱼类增殖放流的最适宜海域。
Daya Bay is a provincial aquatic resources nature reserve, which is not only rich in biological resources, but also an important spawning and feeding ground for many economic fishes(Fig. 1). In order to protect the fishery resources of Daya Bay, four otter trawl surveys of fishery resources were conducted in April(spring), August(summer), October(autumn) and December(winter). Combining distance to the nearest mainland, distance to the nearest larger island, water depth, water temperature, salinity, chlorophyll a, total nitrogen, total phosphorus, maximum standard length of fish and catch per unit of effort, we discussed the nested patterns of fish assemblages in Daya Bay and its influencing factors(Appendix, Table 1). The result showed that the community composition of fishes in Daya Bay was significantly nested. The maximum standard length was significantly associated with their nested matrix ranks(Table 3), indicated that selective colonization was the main driver of nestedness of fishes in Daya Bay. All year round, the fish in Daya Bay tend to choose to inhabit the sea areas of Yangmeikeng and northern Dalajia Island(Table 2). This suggested that the sea areas of Yangmeikeng and northern Dalajia Island were the main distribution areas of fish. The Yangmeikeng was the main fattening area of fish, and the sea area of northern Dalajia Island was the fish spawning ground, both sea areas should pay prior attention to protection and management, moreover, both were the most suitable sites for fishery stock enhancement.
作者
王腾
孙涛
肖雅元
刘永
李纯厚
陈得仿
李鸿
WANG Teng;SUN Tao;XIAO Ya-Yuan;LIU Yong;LI Chun-Hou;CHEN De-Fang;LI Hong(South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Key Laboratory of South China SeaFishery Resources Exploitation & Utilization,Ministry of Agriculture and Rural Affairs,GuangdongProvincial Key Laboratory of Fishery Ecology and Environment,Guangzhou 510300;National Demonstration Center for Experimental Fisheries Science Education,Shanghai Ocean University,Shanghai 201306;Hunan Fisheries Science Institute,Changsha 410153,China)
出处
《动物学杂志》
CAS
CSCD
北大核心
2019年第3期327-338,共12页
Chinese Journal of Zoology
基金
公益性行业(农业)科研专项(No.201403008)
中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项(No.2016TS35)
关键词
大亚湾
群聚
嵌套分析
增殖放流
Daya Bay
Community aggregation
Nestedness analysis
Stock enhancement
