North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.
Geba, K. (2015). North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.. EKB Journal Management System, 1(4), 184-191. doi: 10.21608/jbaar.2015.106026
Khaled Mohammed Geba. "North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.". EKB Journal Management System, 1, 4, 2015, 184-191. doi: 10.21608/jbaar.2015.106026
Geba, K. (2015). 'North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.', EKB Journal Management System, 1(4), pp. 184-191. doi: 10.21608/jbaar.2015.106026
Geba, K. North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.. EKB Journal Management System, 2015; 1(4): 184-191. doi: 10.21608/jbaar.2015.106026

North African sharptooth catfish Clarias gariepinus In silico analyses for genetic expansion of a peculiarly successful catfish species in and out of its African homelands.

Journal of Bioscience and Applied Research
Article 6, Volume 1, Issue 4, October 2015, Page 184-191  XML PDF (296.72 K)
Document Type: Original Article
DOI: 10.21608/jbaar.2015.106026
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Author
Khaled Mohammed Geba*
Molecular Biology and Genetic Engineering Division, Department of Zoology, Faculty of Sciences, Menoufia University, Shebin El- Kom, Menoufia, Egypt
Abstract
The African sharptooth catfish Clarias gariepinus originated from Africa, but its sturdiness and resistance to different environmental conditions enabled it to spread to almost all continents of the world. To develop effective conservation strategies for C. gariepinus, the connection patterns of its geographically related and isolated strains should be precisely described. For this purpose, 65 sequences for cytochrome oxidase subunit 1 (CO1) mitochondrial gene were retrieved from GenBank database. Common and unique haplotypes, average numbers of nucleotide substitutions (Dxy), fixation indices (FST), neutrality and expansion, phylogeny, and haplotype network analyses were all identified. 13 different haplotypes were found, most of which are related to an African haplotype mainly found in Nigeria. Other African, Asian, and South American haplotypes were detected, with the South American and some Asian haplotypes showing the greatest diversion from the main African one. The Nigerian population of C. gariepinus seems to be the most rapidly expanding one, due to the highest frequency of singletone haplotypes among all studied populations. Our results agreed with the knowledge about the world-wide propagation of C. gariepinus recorded in the Food and Agriculture Organization introduced aquatic species database and other related reports, what may confirm the effectiveness of such molecular markers and bioinformatic tools for tracking the origin and movement of the C. gariepinus out of Africa.
Keywords
Africa; Clarias gariepinus; CO1; molecular markers; population genetics
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