Environmental correlates of some selected fish species in the Jebba Dam, North-Central Nigeria

被引:0
|
作者
Oladipo, Segun O. [1 ]
Nneji, Lotanna M. [2 ]
Adeniyi, Akinkunle, V [3 ]
Adeyemi-Ale, Olutomi A. [4 ]
Adelakun, Kehinde M. [5 ]
机构
[1] Kwara State Univ, Dept Biosci & Biotechnol, Zool Unit, Malete, Kwara State, Nigeria
[2] Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA
[3] Fed Univ Agr, Dept Pure & Appl Zool, Abeokuta, Nigeria
[4] Univ Ilorin, Dept Zool, Ecol & Environm Unit, Ilorin, Nigeria
[5] Fed Coll Wildlife Management, New Bussa, Nigeria
关键词
Lates niloticus; Citharinus citharus; Distichondus rostratus; Catch abundance; Sustainability; PERCH LATES-NILOTICUS; NILE PERCH; LAKE VICTORIA; STRATIFICATION; VEGETATION; PREDATION; NABUGABO; KAINJI; BASIN;
D O I
10.1017/S0266467421000511
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
There is a lack of comprehensive understanding of environmental factors influencing fish species' abundance and distribution in some Nigerian freshwater ecosystems. Our study investigated the environmental factors that drive the abundance and distribution of three economically important fishes - Lates niloticus, Citharinus citharus, and Distichondus rostratus - in Jebba Hydroelectric power dam in Northcentral Nigeria. The species catch abundance was determined using gillnets of different mesh sizes, each measuring 50 m length and 20 m deep. The physicochemical parameters were also assessed following standard methods. A total relative abundance of 47.49%, 27.74%, 24.77% were observed for C. citharus, L. niloticus, and D. rostratus, respectively. The canonical correspondence analysis showed that the catch abundance of L. niloticus associates with water volume, turbidity, phosphate, and hydrogen carbonate. Analysis showed that water hardness, biological oxygen demand (BOD), dissolved oxygen (DO), and chloride levels drive the catch abundance of D. rostratus, while C. citharus associates with temperature and depth. The linear Pearson correlation showed a strong positive relationship of the abundance of L. niloticus with turbidity, phosphate, total suspended solids, hydrogen carbonate, water depth, temperature, and water volume. Our result showed a strong positive association of the abundance of C. citharus with water volume, total dissolved solids, temperature, and water depth. A strong positive relationship of the abundance of D. rostratus with conductivity, water depth, and total dissolved solids was reported. Our study improved knowledge on the environmental factors affecting the abundance of three economically important freshwater fishes in Jebba Hydroelectric dam. Further study is needed to investigate the impact of global climate change on the future distribution of these freshwater fish species.
引用
收藏
页码:107 / 117
页数:11
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