徐闻珊瑚礁保护区鱼类种类组成初步研究

Fish Species Composition in the Coral Reef of Coastal Xuwen County

对徐闻珊瑚礁保护区栖息的鱼类进行4个季节的调查分析。结果表明,徐闻珊瑚礁保护区有鱼类2纲13目55科91属135种,其中软骨鱼纲有1目3科3属6种,硬骨鱼纲有12目52科88属129种。在硬骨鱼纲中鲈形目种类最多,有26科45属73种,约占总渔获物种类数的54.1%。在渔获的鱼类中底层鱼类有69种,中下层鱼类有34种,中上层鱼类有32种,分别占鱼类总种数的51.1%、25.2%和23.7%。在春季渔获的鱼类种数最多,有74种,夏季、秋季和冬季渔获鱼类种数变化较小,分别有38种、46种和52种,而在4个季节均有出现的鱼类仅有8种。

Analysis of fish samples collected in the Coral Reef of Xuwen County from September of 2006 to August of 2007 showed that there were at least 135 species belonging to two classes, 13 orders, 55 families and 91 genera. There were 6 species belonging to three families in Order Chondrichthyes, 129 species belonging to 52 families in 12 orders of Osteichthyes. There were 73 species, most abundant species, in Perciformes accounting for 54.1% of the total species. According to inhabiting depth, all fishes were classified into three types： 69 benthic species, accounting for 51.1%, 25.2% in the middle and 23.7% in the littoral. The most abundance of fish species were observed in spring, little change in species numbers in other seasons. Only eight fish species were captured in each season.