Morphometrics, Condition Factor and Organo-somatic Indices of Hydrocynus forskalii, Coptodon zillii and Alestes baremose in Yuna Landing Site Kainji Lake Niger State, Nigeria
Vol. 6 No. 1 (2018), Articles
Vol. 6 No. 1 (2018)

Morphometrics, Condition Factor and Organo-somatic Indices of Hydrocynus forskalii, Coptodon zillii and Alestes baremose in Yuna Landing Site Kainji Lake Niger State, Nigeria

Articles
Published May 29, 2018
Yisa, T. A.
Department of Water Resources, Aquaculture and Fisheries Technology, Federal University of Technology, Minna
Emordi, C. A.
National Institute for Freshwater Fisheries Research, New-Bussa, Niger State
Ibrahim, A.
Department of Water Resources, Aquaculture and Fisheries Technology, Federal University of Technology, Minna
Ibrahim, S. U.
Department of Water Resources, Aquaculture and Fisheries Technology, Federal University of Technology, Minna
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Keywords

Morphormetric
organosomatic indices
landing sites
fish species
Lake Kainji

Abstract

A six-month study was conducted on the morphometrics, condition factors, organo-somatic indices and length-weight relationship of Hydrocynus forskalii , Coptodon zillii and Alestes  baremose from Yuna landing site. Thirty (30) samples of each species collected monthly from artisanal fishermen were assessed on length, weight, and organosomatic indices. All organosomatic parameters of H. forskalii correlated positively except for the pOL and TL. The correlation was higher (1.00), between PAL and SL and lower between ED and BW (r = 0.10. Correlation in C. zillii was higher between SL and TL (r=0.93) and lower (r=0.19) between pOL and pPVL (r=0.19). All morphometrics of A. baremose correlated positively. It was highe between SL and TL (r=0.99), and lowest between ED and pOL (r=0.68). The growth exponent “b” was negative allometric for H. forskalii (b = 2.84) and C. zillii (b = 2.99) while it was positive allometric for A. baremose (b = 3.54). The mean condition factors (K) for H. forskalii, A. baremose and C. zillii were, 1.04±0.31, 1.41±0.27 and 4.16±0.47, respectively. The gonadosomatic index (GSI) of H. forskalii, C. zilli, and A. baremose were 5.92±8.11, 0.54±0.80, and 1.02±0.82, respectively. While hepatosomatic indices of A. baremose, C. zilli and H. forskalii were 2.00±1.33, 1.24±0.69 and 1.03±0.74, respectively. Cardiosomatic indices recorded for H. forskalii was .13±0.06, C. zillii had 13±0.04 while A. baremose was observed to have 15±0.08). The condition factors showed robustness and wellbeing. Correlation between length-weight of the species were strong. The organo-somatic indices showed good health.

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