信阳新县鱼类资源调查

The status quo of fishery resources in Xin County

2015年8月在信阳市新县全境开展鱼类资源调查。根据该县水系特点,共设计12个采样点。包括竹竿河、潢河及寨河等淮河一级支流及二级支流和长江流域。本次鱼类资源调查共获得鱼类40种,隶属于4目8科34属。其中鲤形目种类最多,占总种数的82.50%,其次是鲈形目和鲇形目,分别占总种数的12.50%和7.50%,合鳃鱼目1种,占总种数的2.5%。根据鱼类区系复合体学说,新县鱼类资源可划分为中国平原鱼类区系复合体、晚第三纪早期鱼类区系复合体、南方平原鱼类区系复合体、北方平原鱼类区系复合体、北方山地区系复合体5个区系复合体。

An investigation on fishery resources in Xin County was carried out in August 2015. Twelve sampling locations were chosen involving reservoir, river and mountain streams. Forty species belonging to 34 genus, 8families and 4 orders were collected. Cypriniformes was the dominant order with the most members in this area,which account for 82.50% of the total, Perciformes and Siluriformes account for 12.50% and 7.50%, respectively.Synbranchiformes have only one species and account for 2.13%. These fish species can be divided into five fishfauna complex: China Plain Fish Fauna Complex, Fauna of the North Plains Complex, Neogene Early Fauna Complex, Department of the North Mountain Complex, Fauna of the South Plains Complex and Fauna of the North Mountain Complex.