2014 Volume 1 Issue 3

Length-weight relationship and condition factor of 11 commercial fish species of Daberam, Reservoir, Katsina State.


Lawal I., Bichi A. H.
Abstract

Length-weight relationship and condition factors of some commercially important fish species; Clarias, gariepinus, Schilbemicropogan, Mormyrusrume, Petrocephalusbovei, Alestes nurse, Protopterusannectins, Latesniloticus, Oerochromisniloticus, Sarotherondongalilaeus, Tilapia guntheriand Tilapia zilli are described. The sample size, minimum and maximum lengths and weights, length-weight relationships, ±95% CI of b, r2 r are summarized. The meanvalue of b co-efficient for the eleven species studied was 2.3954.The results indicated nearly negative allometricrelationship inS.micropogan,T.zilli and A.nurse. While. C. gariepinus, O.niloticus,P.bovei,M.rume and L.niloticusindicated nearly isometric relationship and P.annectins,T.guntheri and S.galilaeus shows positive allometric growth. The condition factor( k) values indicated fish population ranged from immature to mature ones.

Keywords: Daberam reservoir, fish species, Length-weight relationship, condition factor.


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