Hybridization Studies in Normal and Cracked-Skull Diseased African Catfish, Clarias gariepinus

Authors

  • O. Fagbuaro Department of Zoology, University of Ado-Ekiti, PMB 5363, Ado-Ekiti, Nigeria
  • J.I. Awopetu Department of Zoology, Obafemi Awolowo University, Ile Ife, Nigeria
  • M.A. Faluyi Department of Plant Science and Forestry, University of Ado-Ekiti, PMB 5363, Ado-Ekiti, Nigeria
  • P.O. Aluko National Institute for Freshwater Fisheries Research, PMB 6006, New Bussa, Nigeria

Keywords:

: hybridization, cephalic-abnormality, hatchability, productivity, Clarias gariepinus

Abstract

 Intraspecific hybridization studies were carried out in two strains of Clarias gariepinus with acute and mild cephalic-abnormality or cracked-skull disease and non-cephalic or normal species from Ibadan, Oyo State, Southwestern Nigeria, and the Maiduguri strain from Maiduguri, Borno State, Northern Nigeria. The highest percentage of hatchability (84.5%) was recorded in the Maiduguri strain of C. gariepinus and the least (67.5%) in the strain with mild cephalic- abnormality. Among the intraspecific hybrids, the highest percentage (76.7%) was recorded in the cross between the female of Maiduguri strain and the male of non-cephalic strain, while the least (72.2%) was recorded in the cross involving the female of Maiduguri strain and the male of strain with cephalic-abnormality. The maximum growth recorded was 4.321g in six weeks in the strain with mild cephalic-abnormality and minimum 3.758 g in the Maiduguri strain. Among the hybrids, maximum growth of 4.086 g was recorded in the cross between the female of Maiduguri strain and the male of non-cephalic, and minimum of 3.582 g in the cross between the female with cephalic-abnormality and the male of Maiduguri strain. There was no occurrence of cephalic-abnormality in the cross between the female of C. gariepinus with cephalic-abnormality and the male of Maiduguri strain.

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Published

2005-04-26

How to Cite

Fagbuaro, O., Awopetu, J., Faluyi, M., & Aluko, P. (2005). Hybridization Studies in Normal and Cracked-Skull Diseased African Catfish, Clarias gariepinus. Biological Sciences - PJSIR, 48(2), 113–117. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/1354