许昌市区鱼类资源调查

Current status of fishery resources in Xuchang City

2017年4月17-21日,河南省鱼类资源调查队在许昌市水产技术推广站的协助下,完成了许昌市区的鱼类资源调查工作。共设置采捕样点20个和采集样点2个。采捕获得鱼类33种,隶属于5目10科28属,其中鲤形目种类最多,占总种数的69.05%,其次鲈形目占总种数的15.15%,鲇形目和合鳃目均为2种,各占总种数的6.06%,鹤鱵鱼目只有1种,占总种数的3.03%。许昌市鱼类物种多样性指数较高,Margalef物种丰富度指数平均值为2.88,Shannon-Wiener物种多样性指数平均值为2.93。调查结果显示:许昌市鱼类在摄食、繁殖及栖息习性等方面呈现多样化特征,鱼类物种多样性指数较高。根据鱼类区系复合体学说,许昌市鱼类资源主要以江河平原区系复合体种类为主。

Fish resource investigation was carried out by the cooperation of fish resource investigation team of Henan Province and aquatic technology promotion station of Xuchang City in 17-21, April, 2017. They collected 33 species which belonging to 5 orders, 10 families and 28 genera. Cypriniformes was the most species, accounting for 69.70% of the total species, followed by Perciformes, accounted for 6.06%. Siluriformes and Synbranchiformes both accounted for 15.15% of the total species, only 2 species. Beloniformes had only one species. There was high diversity index in Xuchang City, the mean species richness was 2.88, Shannon-Wiener species diversity index was 2.93. The survey results showed that high diversity in ingestion, breeding and perching habit, and had high species diversity. These fish species could be divided into seven freshwater fish-fauna complexes, and the main species were classified into China Plain fish Fauna Complex.