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引用本文:张敏莹,徐东坡,刘凯,施炜纲.长江安庆江段鱼类调查及物种多样性初步研究.湖泊科学,2006,18(6):670-676. DOI:10.18307/2006.0617
ZHANG Minying,XU Dongpo,LIU Kai,SHI Weigang.Ichthyologic survey and primary studies on diversity of fishery species in Anqing section of the Yangtze River. J. Lake Sci.2006,18(6):670-676. DOI:10.18307/2006.0617
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长江安庆江段鱼类调查及物种多样性初步研究
张敏莹, 徐东坡, 刘凯, 施炜纲
中闽水产科学研究院淡水渔业研究屮心, 内陆渔业生态环境和资源重点开放实验室, 无锡214081
摘要:
对1990-2004年长江安庆江段鱼类及物种多样性进行了调查研究.该江段共有鱼类46种,分别隶属于9目14科.按迁徙习性可分为江湖半洄游性鱼类、洄游性鱼类、河口鱼类和定居性鱼类4大类型.小型定居性鱼类占优势,群落优势种为黄颡鱼、鲫、鲶、鲤.多样性特征值年间平均指标为:Margalef指数(R)1.54,Wilhm改进指数(H")2.14,McNaughton指数(Dw)0.44,Pielou指数(J')0.75.经济鱼类趋于小型化,四大家鱼资源不容乐观.必须从根本上降低对长江的捕捞压力.
关键词:  长江安庆江段  鱼类调查  物种多样性
DOI:10.18307/2006.0617
分类号:
基金项目:农业部海洋与河口渔业重点开放实验室长江水生生物资源保护与管理小额基金(C-2005-05);世界自然基金会汇丰银行长江项目;无锡市自然科学基金项目(CK040007)共同资助
Ichthyologic survey and primary studies on diversity of fishery species in Anqing section of the Yangtze River
ZHANG Minying, XU Dongpo, LIU Kai, SHI Weigang
Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries, Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences. Wuxi 214081, P. R. China
Abstract:
Ichthyologic surve and primary studies on diversity of fishery species in Anqing seclion of I he Yangtze River were carried oul during 1990-2004. Fishes of 9 orders, 14 families and 46 speries were foJIerted in ihis area. There were four ecological lypes. They were semi-migraled fishes between the Yangtze River and lakes, migrated fishes between the Yangtze River and the sea, esluarine fishes and resident fishes. Most of the fishes were small-sized and resident. Dominanl species were yellow calfish. crucian,catfish and common carp. The diersii indexes from 1990 to 2004 were analysed lhal Margalefs index was 1.54, Wilhni's index 2.14, McNauglilon index 0.44 and Pielous index 0.75, Economical fishes had a trend to he small and ihe rescoures status of llie fmir major Chinese carp were worrtng. Inlensily of fishing must he reduced in the Yangtze River
Key words:  Anqing seclion of the Yangtze River  ichthyologic survey  diversity of fishen species
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