African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Is the Dutch domesticated strain of Clarias gariepinus (Burchell, 1822) a hybrid?

Nwafili Sylvanus Anene1,2 and Gao Tianxiang1*
1Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao. 266003 P. R. China. 2Department of Fisheries, Ministry of Agriculture and Natural Resources, P. M. B. 5023, Asaba, Delta State, Nigeria.
Email: [email protected]

  •  Accepted: 05 March 2007
  •  Published: 16 April 2007

Abstract

In a study of genetic characteristics of exotic Clarias gariepinus we obtained the animals from five hatcheries in Nigeria and sequenced 399 base pair of the cyt b gene. The results show that the exotic C. gariepinus clustered in two lineages: Clarias anguillaris (West Africa) and C. gariepinus (East Africa). First, this strain could be a hybrid between the two species since the original populations used for selection were from different sources including West Africa where both occur sympatrically. Alternatively, it has been contaminated via unwholesome practices.

 

Keywords: Clarias gariepinus, Holland Clarias, contaminated hatchery stock and hybrid.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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