尉氏县鱼类资源调查

Investigation of fish resources in Weishi County

2020年9月22日到9月25日,河南省鱼类资源调查队对尉氏县主要水系进行了鱼类资源调查。为全面了解尉氏县境内鱼类资源的情况,本次调查共设及20个采样点,共获得30种鱼类,隶属于5目12科29属。其中,鲤形目鱼类为优势种类,共21种,占总数的70.00%,其中鲫鱼的分布最为广泛,在15个样点均有分布;鲈形目鱼类和鲇形目鱼类分别为4种和3种,各占总种数的10.00%、 13.33%;合鳃目和鳉形目鱼类各一种,均占总数的3.33%。本次鱼类资源调查结果显示:尉氏县大多数鱼类为生活在水中上层,共15种,占总种数的50%;肉食性鱼类最多,有15种,占总种数的50%,杂食性鱼类有10种,占总数的33.33%;尉氏县的鱼类的地理区系划分:江河平原区系复合体(40%)、南方平原区系复合体(30%)、晚第三纪早期区系复合体(26.66%)、北方平原区系复合体(1%)。

From September 22 to 25,2020,the Henan Province Fish Resources Survey Team conducted a fish resource survey on the main water system in Weishi County.In order to fully understand the situation of fish re-sources in Weishi County,a total of 20 sampling points were set up in this survey,and a total of 30 species were collected,belonging to 5 orders,12 families and 28 genera.Among them,Cypriniformes is the dominant group,with a total of 21 species,accounting for 70.00%of the total species.Meanwhile,species of Cypriniformes is the most widely distributed,including 15 sample points;Perciformes and catfish comprise 4 species and 3 species,ac-counting for 10.00%and 13.33%of the total species respectively;there was one species of Synbranchiformes and Cyprinodontiformes respectively,each accounting for 3.33%of the total species.The results of this fish resource survey showed that most of fishes in Weishi County were pelagic fish,with a total of 15 species,accounting for 50%of the total species;the carnivorous fish included 15 species,accounting for 50%of the total species,fol-lowed by 10 kinds of omnivorous fishes,accounting for 33.33%of the total;in terms of fish geographical flora divi-sion,fish in Weishi County can be divided into river plain flora complex(40%),southern plain flora Complex(30%),early Late Tertiary floristic complex(26.66%),Northern Plains floristic complex(1%).