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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2019, Vol. 7, Issue 2, Part D

Genetic differentiation and structure of Chrysichthys nigrodigitatus populations in some Nigerian coastal waters


Author(s): Ukenye EA, Akinwale MMA, Megbowon I, Usman AB, Jubrin H, Sokenu BA, Chidume I and Eze NC

Abstract: The knowledge of genetic structure of a species is a key point for its effective conservation. On this note, studies were carried out to investigate the genetic differentiation and structure of Chrysichthys nigrodigitatus populations in some coastal rivers of Nigeria; Itu Bridge River, Badagry, Epe and Igbokoda. A total of 80 DNA samples from four river populations were analyzed at four microsatellite loci. Moderate interpopulation differentiation and sufficient genetic differentiation within individuals were indicated by the four microsatellite loci as evidenced by 3% variation among populations and 89% variation within individuals respectively by AMOVA analysis. This observation was further supported by limited gene flow found among populations. The populations exhibited a positive correlation between genetic and geographical distances which implies that the populations studied fit into isolation by distance model suggesting that structuring in C. nigrodigitatus populations is possibly due to isolation by distance.

Pages: 254-257  |  284 Views  30 Downloads

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How to cite this article:
Ukenye EA, Akinwale MMA, Megbowon I, Usman AB, Jubrin H, Sokenu BA, Chidume I, Eze NC. Genetic differentiation and structure of Chrysichthys nigrodigitatus populations in some Nigerian coastal waters. Int J Fish Aquat Stud 2019;7(2):254-257.
International Journal of Fisheries and Aquatic Studies