An assessment of Cichild fishery of Bontanga reservoir, Northern Ghana

Show simple item record Ofori-Danson, P.K. Kwarfo-Apegyah, K. Nunoo, F.K.E. 2012-04-23T19:01:47Z 2017-10-14T12:16:30Z 2012-04-23T19:01:47Z 2017-10-14T12:16:30Z 2008
dc.description.abstract The stock parameters of three cichilds, Oreochromis niloticus, Sarotherodon galilaeus and Tilapia zilli, which dominated the catches of artisanal gill net fishery in Bontanga reservoir were studied, Estimates of the growth and mortality parameters of the stocks enabled application of Beverton and Holt Relative yield-per-recruit (Y’/R) models to estimate the maximum sustainable yield-per-recruit (MSY/R), corresponding fishing effort (FMSY/R), and the exploitation rate at which 50% of the biomass-per recruit (F0.5) were exploited. On annual basis, growth of the cichlids were describe by the von Bertalanffy growth equation: O. niloticus: L1 = 23.63(1-exp (0.58)1 + 0.10)], S. galilaecus: L1 = 36.73[1-exp (0.26) (1 + 0.10)] and T. zillii: L1 = 21.53(1 – exp (0.60 (1 + 0.10)]. The asymptotic length (Loo) range of 21.6-36.9 cm and the maturity length ratio (Lm/Loo) of 0.19-0.39, which was less than 0.7, suggested that the fishes were stunted. The mean length at first capture of O. alioticus was 9.1 SL cm and for S. galilaeus and T.zillii were 7.SL cam and 4.5 SL cm. respectively. en_US
dc.language.iso en en_US
dc.publisher West African Journal of Applied Ecology (14): 107-111 en_US
dc.subject Stock parameters en_US
dc.subject Oreochromic niloticus en_US
dc.subject Fishing effort en_US
dc.subject Von Bortalanffy en_US
dc.title An assessment of Cichild fishery of Bontanga reservoir, Northern Ghana en_US
dc.type Article en_US

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search UGSpace


My Account