尼日利亚克罗斯河巴卡西地方政府区Akpayafe河的手工渔业渔获率、丰度百分比和渔获率。

P. Ajah, P. Asuquo
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引用次数: 0

摘要

从2009年4月至2010年3月,对巴卡西地方政府区阿克帕亚菲河手工渔业的渔获率和物种组成进行了每月一次的调查,以确定河流水系渔业的渔获率以及不同鱼类的相对丰度。共记录到23种鱼类和20个鱼类科。优势种有毛麻蝇、黑digitatus Chrysichthys、amnicola Callinectes,其中丰度最高的有毛麻蝇12694个,黑digitatus 957个,其次是amnicola 852个。2009年4月、5月和12月的鱼类丰度普遍较其他月份高。12月、4月和5月分别有3759、2664和2511只高发种群,5月和7月渔获率分别为69.98和21kg/天/船,3月最低(6.7kg/天/船)。在调查中,丰度最高的物种是毛藓,最少的物种是短水蛇。
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Catch Rate of Artisanal Fisheries, Percentage Abundance and In Akpayafe River In Bakassi Local Government Area, Cross River, Nigeria.
Investigation on the catch rate of artisanal fisheries and species composition in Akpayafe River, Bakassi Local Government Area was carried out monthly from April 2009 March 2010 to determine the catch rate of the fisheries in the river system as well as the relative abundance of the different fish species. A total of 23 fish species and 20 fish families were recorded. Ethmalosa fimbriata, Chrysichthys nigrodigitatus, Callinectes amnicola were dominant species with E. fimbriata being the most abundance species with 12694 individuals, C. nigrodigitatus with 957 then C. amnicola with 852 individuals. Fish abundance was generally high in April, May and December 2009 than other months. High populations of 3759, 2664 and 2511 individuals respectively were recorded in December, April and May with higher catch rates observed in May (69.98kg/day/boat) and July (21kg/day/boat) but least in March (6.7kg/day/boat). E. fimbriata was the most abundant species and Hydrocynus brevis was the least abundant during the survey.
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