信阳浉河区鱼类资源分布及区系组成特征

Current status and floristic characteristics of fishery resources in Shihe District of Xinyang

2015年7-8月对信阳市浉河区鱼类资源开展调查,根据浉河区水系特点,共设置12个采样点,以南湾水库为中心,对水库上游各支流,特别是山区河流进行重点调查,并结合当地农贸市场收集鱼类样本。本次调查共收集鱼标本47种,隶属于5目11科37属。其中鲤形目种类最多,占总种数的72.34%,其次是鲈形目和鲇形目,分别占总种数的12.76%和10.64%,颌针鱼目和合鳃鱼目各1种,分别占总种数的2.13%。山区河流鱼类物种较丰富,群落较复杂,鱼类在摄食、繁殖及栖息习性等方面呈现多样化特征。根据鱼类区系复合体学说,信阳浉河区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和北方山地鱼类区系复合体。

An investigation on fish resources in Shihe District of Xinyang was carried out from July to August in 2015. Twelve sampling locations were selected involving reservoirs, rivers and mountain streams. We collected forty-seven species, belonging to 37 genus, 11 families and 5 orders. Cypriniformes was the dominant species in this area, which accounted for 72.34% of the total. Perciformes and Siluriformes accounted for 12.76% and 10.64%,respectively. Beloniformes and Synbgranchiformes both had only one species and accounted for 2.13%. Abundant fish species and complex community were found in mountain rivers, and their habits and lifestyles were highly diverse, including the feeding habits, breeding habits and inhabiting behaviors. These fish species could be divided into five fish-fauna complex, including China Plain fish Fauna Complex, Fauna of the North Plains Complex, Neogene Early Fauna Complex, Department of the North Mountain Complex and Fauna of the South Plains Complex.