Post-impoundment study of the fish communities of Tugwi-Mukosi Reservoir, Zimbabwe

Q3 Environmental Science
Takudzwa C. Madzivanzira, Lindah Mhlanga, Maxwell Barson, Lightone Marufu, Pamela Tendaupenyu, Newman Songore, Tamuka Nhiwatiwa
{"title":"Post-impoundment study of the fish communities of Tugwi-Mukosi Reservoir, Zimbabwe","authors":"Takudzwa C. Madzivanzira,&nbsp;Lindah Mhlanga,&nbsp;Maxwell Barson,&nbsp;Lightone Marufu,&nbsp;Pamela Tendaupenyu,&nbsp;Newman Songore,&nbsp;Tamuka Nhiwatiwa","doi":"10.1111/lre.12393","DOIUrl":null,"url":null,"abstract":"<p>A post-impoundment ichthyofaunal survey was carried out in 2017 in Tugwi-Mukosi Reservoir using gill nets, seine net and fyke nets. The objective was to determine the present fish assemblages after impoundment of the reservoir in order to provide a baseline study that could be used to inform management decisions and for comparison with future predicted ecological changes associated with fishery development. The fish community composition was fairly diverse, comprising of 11 species belonging to four families, including Cichlidae (<i>Oreochromis mossambicus</i>; <i>Coptodon rendalli</i>; <i>Tilapia sparmanii</i>), Momyridae (<i>Marcusenius macrolepidotus</i>), Cyprinidae (<i>Labeo cylindricus</i>; <i>Enteromius paludinosus</i>; <i>E</i>. <i>afrohamiltoni</i>; <i>E</i>. <i>topinni</i>; <i>E</i>. <i>trimaculatus</i>; <i>Engraulicypris brevianalis</i>) and Clariidae (<i>Clarias gariepinus</i>). <i>Oreochromis mossambicus</i> was present at all sampled sites, with only two species (<i>O</i>. <i>mossambicus</i>; <i>M</i>. <i>macrolepidotus</i>) sampled downstream of the reservoir. Twenty-two prey/forage categories were observed in the guts of analysed fish, with macrophytes having the highest frequency of occurrence (90%). All the body condition values of fish from the reservoir exceeded one, and the estimated fish yield is 33.34 t/year. Collective efforts involving various stakeholders should be made to ensure the reservoir develops into a successful fishery resource, while also serving other purposes.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/lre.12393","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lakes and Reservoirs: Research and Management","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/lre.12393","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0

Abstract

A post-impoundment ichthyofaunal survey was carried out in 2017 in Tugwi-Mukosi Reservoir using gill nets, seine net and fyke nets. The objective was to determine the present fish assemblages after impoundment of the reservoir in order to provide a baseline study that could be used to inform management decisions and for comparison with future predicted ecological changes associated with fishery development. The fish community composition was fairly diverse, comprising of 11 species belonging to four families, including Cichlidae (Oreochromis mossambicus; Coptodon rendalli; Tilapia sparmanii), Momyridae (Marcusenius macrolepidotus), Cyprinidae (Labeo cylindricus; Enteromius paludinosus; Eafrohamiltoni; Etopinni; Etrimaculatus; Engraulicypris brevianalis) and Clariidae (Clarias gariepinus). Oreochromis mossambicus was present at all sampled sites, with only two species (Omossambicus; Mmacrolepidotus) sampled downstream of the reservoir. Twenty-two prey/forage categories were observed in the guts of analysed fish, with macrophytes having the highest frequency of occurrence (90%). All the body condition values of fish from the reservoir exceeded one, and the estimated fish yield is 33.34 t/year. Collective efforts involving various stakeholders should be made to ensure the reservoir develops into a successful fishery resource, while also serving other purposes.

津巴布韦Tugwi-Mukosi水库鱼类群落蓄水后研究
2017年,在Tugwi-Mukosi水库使用刺网、围网和鱼网进行了蓄水后鱼类种群调查。目的是确定水库蓄水后目前的鱼类种群,以便提供一项基线研究,以便为管理决策提供信息,并与未来预测的与渔业发展有关的生态变化进行比较。鱼类群落组成相当多样化,共有4科11种,其中:慈鲷科(Oreochromis mossambicus);Coptodon rendalli;罗非鱼(sparmanii),大鳞罗非鱼科(Marcusenius macrolepidotus),鲤科(Labeo icus);Enteromius paludinosus;大肠afrohamiltoni;大肠topinni;大肠trimaculatus;短尾clariidis)和Clariidae (Clarias gariepinus)。在所有取样点均发现了mossambicus,仅有2种(O. mossambicus;巨鳞鼩鼱)在水库下游取样。在分析的鱼类内脏中观察到22种猎物/饲料类别,其中大型植物的出现频率最高(90%)。水库鱼体状态值均超过1,估计鱼产量为33.34 t/年。应使各利益攸关方共同努力,确保水库发展成为一个成功的渔业资源,同时也为其他目的服务。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Lakes and Reservoirs: Research and Management
Lakes and Reservoirs: Research and Management Environmental Science-Water Science and Technology
CiteScore
2.40
自引率
0.00%
发文量
29
期刊介绍: Lakes & Reservoirs: Research and Management aims to promote environmentally sound management of natural and artificial lakes, consistent with sustainable development policies. This peer-reviewed Journal publishes international research on the management and conservation of lakes and reservoirs to facilitate the international exchange of results.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信