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Karyological and Chromosomal Study of Catfish (Clariidae, Clarias gariepinus, Burchell, 1822) from Anambra River, Anambra State, Nigeria

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Author(s): J.C. Okonkwo | M.O. Obiakor

Journal: Pakistan Journal of Nutrition
ISSN 1680-5194

Volume: 9;
Issue: 2;
Start page: 112;
Date: 2010;
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Keywords: Karyotype | chromosome | Clarias gariepinus

ABSTRACT
Karyological and Chromosome analysis of Clarias gariepinus (Burchell, 1822) inhabiting Ananmbra River, Anambra State of Nigeria was carried out using Modified Air-drying technique. Clarias gariepinus was found to have standard karyotype and diploid chromosome number of 2n = 56. The study further revealed that the males and females catfish consist of 8 metacentric, 24 and 25 submetacentric and 24 and 23 acrocentric chromosomes, respectively. The work documented the karyotypic polymorphism of Clarias gariepinus resident in the River.
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