摘要
2014年对丹江口水库上游四大家鱼等产漂流性卵鱼类进行早期资源的现状调查,结果表明丹江口水库上游现有产漂流性卵鱼类共14种,以银鮈、蛇鮈、花斑副沙鳅、、蒙古鲌等鱼类为主,四大家鱼卵64粒,仅占卵数的1.02%.与1977年、1993年历史调查的产漂流性卵鱼类早期资源数据相比,产卵场数量减少6处,产卵场的规模和位置发生显著变化.丹江口水库上游产漂流性卵鱼类产卵总量下降明显,从1977年的近1745.86亿粒(尾)下降到2014年的455502.76万粒(尾);其中四大家鱼卵苗径流量下降幅度最为显著,从171.27亿粒(尾)下降到4295.22万粒(尾),四大家鱼卵苗径流量占鱼类卵苗总径流量的比例也从9.81%下降到了0.94%以下.
This study conducted to investigate the early resources of the fish with pelagic eggs in the upstream of Danjiangkou Reservoir in 2014. 14 species were collected and the main species were Squalidus argentatus,Saurogobio dabryi,Parabotia fasciata,Hemiculter leucisclus and Culter mongolicus mongolicus. 64 eggs of the four major Chinese carps were collected,accounted for1.02%. Compared with the results of 1977 and 1993,the number of the spawning sites reduced by 6,the size and location of the spawning sites have also changed. The total amount of pelagic eggs in the upstream of Danjiangkou Reservoir decreased from 174.59 billion in 1977 to 4555.03 million in 2014. The eggs of four major Chinese carps also decreased from 17.13 billion to 42.95 million and the proportion decreased from 9.81% to 0.94%.
作者
雷欢
谢文星
黄道明
谢山
唐会元
陈金生
杨钟
常秀岭
陈锋
LEI Huan;XIE Wenxing;HUANG Daoming;XIE Shan;TANG Huiyuan;CHEN Jinsheng;YANG Zhong;CHANG Xiuling;CHEN Feng(Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources,Institute of Hydroecology,Ministry of Water Resources and Chinese Academy of Sciences,Wuhan 430079,P.R.Chin)
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2018年第5期1319-1331,共13页
Journal of Lake Sciences
基金
国家重点研发计划项目(2016YFA0601001)资助
关键词
丹江口水库
漂流性卵
四大家鱼
产卵场
Danjiangkou Reservoir
pelagic eggs
four major Chinese carps
spawning sites
