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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Mitochondrial DNA reveals multiple introductions of domestic chicken in East Africa
Molecular Phylogenetics and Evolution, Volume 58, No. 2, Year 2011
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Description
Chicken were possibly domesticated in South and Southeast Asia. They occur ubiquitously in East Africa where they show extensive phenotypic diversity. They appeared in the region relatively late, with the first undisputed evidence of domestic chicken in Sudan, around ∼700 BC. We reveal through a detailed analysis of mitochondrial DNA D-loop sequence diversity of 512 domestic village chickens, from four East African countries (Kenya, Ethiopia, Sudan, Uganda), the presence of at least five distinct mitochondrial DNA haplogroups. Phylogeographic analyses and inclusion of reference sequences from Asia allow us to address the origin, ways of introduction and dispersion of each haplogroup. The results indicate a likely Indian subcontinent origin for the commonest haplogroup (D) and a maritime introduction for the next commonest one (A) from Southeast and/or East Asia. Recent introgression of commercial haplotypes into the gene pool of village chickens might explain the rare presence of two haplogroups (B and C) while the origin of the last haplogroup (E) remains unclear being currently observed only outside the African continent in the inland Yunnan Province of China. Our findings not only support ancient historical maritime and terrestrial contacts between Asia and East Africa, but also indicate the presence of large maternal genetic diversity in the region which could potentially support genetic improvement programmes. © 2010 Elsevier Inc.
Authors & Co-Authors
Mwacharo, Joram Mwashigadi
United Kingdom, Nottingham
University of Nottingham
Björnstad, Gro
Norway, As
Norges Miljø- og Biovitenskapelige Universitet
Kenya, Nairobi
International Livestock Research Institute Nairobi
Mobegi, Victor Atunga
Kenya, Nairobi
International Livestock Research Institute Nairobi
Nomura, Koh
Japan, Tokyo
Tokyo University of Agriculture
Hanada, Hirofumi
Japan, Tokyo
Tokyo University of Agriculture
Amano, Takashi
Unknown Affiliation
Jianlin, Han
Kenya, Nairobi
International Livestock Research Institute Nairobi
China, Beijing
Chinese Academy of Agricultural Sciences
Hanotte, Olivier H.
United Kingdom, Nottingham
University of Nottingham
Kenya, Nairobi
International Livestock Research Institute Nairobi
Statistics
Citations: 132
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1016/j.ympev.2010.11.027
ISSN:
10557903
e-ISSN:
10959513
Research Areas
Genetics And Genomics
Maternal And Child Health
Study Locations
Multi-countries
Ethiopia
Kenya
Sudan
Uganda