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Chicken domestication: an updated perspective based on mitochondrial genomes
- Source :
- Heredity
- Publication Year :
- 2012
- Publisher :
- Nature Publishing Group, 2012.
-
Abstract
- Domestic chickens (Gallus gallus domesticus) fulfill various roles ranging from food and entertainment to religion and ornamentation. To survey its genetic diversity and trace the history of domestication, we investigated a total of 4938 mitochondrial DNA (mtDNA) fragments including 2843 previously published and 2095 de novo units from 2044 domestic chickens and 51 red junglefowl (Gallus gallus). To obtain the highest possible level of molecular resolution, 50 representative samples were further selected for total mtDNA genome sequencing. A fine-gained mtDNA phylogeny was investigated by defining haplogroups A–I and W–Z. Common haplogroups A–G were shared by domestic chickens and red junglefowl. Rare haplogroups H–I and W–Z were specific to domestic chickens and red junglefowl, respectively. We re-evaluated the global mtDNA profiles of chickens. The geographic distribution for each of major haplogroups was examined. Our results revealed new complexities of history in chicken domestication because in the phylogeny lineages from the red junglefowl were mingled with those of the domestic chickens. Several local domestication events in South Asia, Southwest China and Southeast Asia were identified. The assessment of chicken mtDNA data also facilitated our understanding about the Austronesian settlement in the Pacific.
- Subjects :
- Mitochondrial DNA
animal structures
Molecular Sequence Data
Biology
Breeding
Red junglefowl
DNA, Mitochondrial
Haplogroup
Chromosomes
03 medical and health sciences
Phylogenetics
Genetic variation
Genetics
biology.domesticated_animal
Animals
Domestication
Genetics (clinical)
Asia, Southeastern
Phylogeny
030304 developmental biology
0303 health sciences
Genetic diversity
Base Sequence
Haplotype
0402 animal and dairy science
Genetic Variation
04 agricultural and veterinary sciences
Sequence Analysis, DNA
040201 dairy & animal science
Phylogeography
Haplotypes
Evolutionary biology
Genome, Mitochondrial
Original Article
Chickens
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Heredity
- Accession number :
- edsair.doi.dedup.....3a125a696b831bc5a595c3df44f2ad0d