南麂列岛浅海区鱼种组成、分布与环境因子的关系

The Composition and Distribution of Fish Assemblage in the Shallow Waters Around NANJI Islands and Its Relationship with Environmental Factors

根据2013年11月、2014年2、5、9月在南麂列岛国家海洋自然保护区浅海区域的渔业资源调查资料,研究南麂列岛浅海区域的鱼类种类组成及数量分布,并对其与水文环境因子之间的关系作定量分析。结果表明,南麂列岛浅海区域鱼类有92种,隶属15目、49科、74属,鱼类种数春季(55种)>冬季(45种)>秋季(44种)>夏季(34种),其中优势种为龙头鱼(Harpodon nehereus)、六指马鲅(Polynemus sextarius)、六丝钝尾虾虎鱼(Amblychaeturichthys)、凤鲚(Coilia mystus)、棘头梅童鱼(Collichthys lucidus)和绿鳍鱼(Chelidonichthys kumu)等6种。鱼类生物量各季节由高到低依次为夏季(825.87 kg)>冬季(160.05 kg)>秋季(139.14 kg)>春季(124.94kg)。典范对应分析认为,底层盐度和水深是影响调查海域鱼类种类组成和数量分布的主要环境因子。

Based on the data acquired in seasonal comprehensive surveys of the marine ecosystem of theNanji islands ground shallow sea area waters by“Zhecangyu0942”in November,2013and in February,May,and September,2014,The species composition and quantity distribution of fish species werereported was relative fishing rate.A total of92species were identified,which belonged to74genera in49families of15orders.The number of fish species descended as the following:spring(55)>winter(45)>autumn(44)>summer(34).The dominant species were Harpodon nehereus,Polynemussextarius,Amblychaeturichthys,Coilia mystus,Collichthys lucidus,and Chelidonichthys kumu.And theseasonal shrimp biomass was(in decreasing order)summer(825.87kg)>winter(160.05kg)>autumn(139.14kg)>spring(124.94kg).The water depth and underlying salinity were the most importantenvironmental factors affecting the change of the fish species composition and quantity distribution inthe four seasons.