汉江中下游产漂流性卵鱼类早期资源现状的初步研究  

Preliminary Study on the Larval Resources of Fishes Spawning Drifting Eggs in the Middle and Lower Reaches of the Hanjiang River

作　　者：万力[1] 蔡玉鹏[1] 唐会元[1] 杨志[1] 张晓敏[1] 郑海涛[1] 乔晔[1] 

机构地区：[1]水利部中国科学院水工程生态研究所,湖北武汉430079

出　　处：《水生态学杂志》2011年第4期53-57,共5页Journal of Hydroecology

基　　金：科技部水利部公益性行业科研专项(200701008);水利部公益性行业科研专项(200701029;200801035;201001003)

摘　　要：为了解汉江中下游江段的水文变化特点与鱼类早期资源分布状况,2009年6～8月在沙洋断面开展了汉江中下游产漂流性卵鱼类早期资源现状的调查。结果表明,汉江沙洋站以上可监测到的152.28km干流江段中共有3个产卵场,产卵场总长度为42.12km,占江段总长的27.7%。产卵总量为56601.9万粒,产漂流性卵鱼类约有21种,其中拟尖头鲌、蛇鮈、双斑副沙鳅、翘嘴鲌、吻鮈、赤眼鳟等为优势种。产漂流性卵鱼类的产卵次数和产卵量与江水的流速、温度、透明度、涨落水持续时间等多个因素都有一定的关联。近5年来,汉江中下游产漂流性卵鱼类的产卵量因为各种因素的影响呈现出逐年下降的趋势,产卵场的位置也有所改变。本研究旨在为水利开发与水生态环境以及鱼类资源保护提供基础资料。The status of larval resources of fishes with drifting eggs in the middle and lower reaches of the Han River in the Shayang section was investigated from June to August in 2009.The results indicate that along the Sanyang section three spawning sites were found in a 152.28 km mainstream,with a total length of 42.12 km,accounting for 27.7%.The total number of eggs was 5.66 ×108 ind,and 21 species of fish laying drifting eggs were found,in which Culter oxycephaloides,Saurogobio dabryi,Parabotia bimaculata,Culter alburnus,Rhinogobio typus,Squaliobarbus curriculus were dominant species.Some relation can be found between the frequency and number of drifting eggs laying with many factors such as river flow rate,temperature,transparency,duration of river rise and fall.In addition,the study showed that under the influence of many factors,egg laying amount tended to decrease year by year,and the location of egg laying sites had changed.Finally a further study on hydrological changes and early fish resources distribution provided basic materials for water conservancy development,water ecological environment and fish resources protection.

关 键 词：汉江中下游 鱼类 漂流性卵 早期资源 

分 类 号：Q145[生物学—生态学]