Abstract:
:In this study, we aimed to elucidate the origin of domestic chickens and their evolutionary history over the course of their domestication. We conducted a large-scale genetic study using mitochondrial DNA D-loop sequences and 28 microsatellite DNA markers to investigate the diversity of 298 wild progenitor red junglefowl (Gallus gallus) across two subspecies (G. g. gallus and G. g. spadiceus) from 12 populations and 138 chickens from 10 chicken breeds indigenous to Thailand. Twenty-nine D-loop sequence haplotypes were newly identified: 14 and 17 for Thai indigenous chickens and red junglefowl, respectively. Bayesian clustering analysis with microsatellite markers also revealed high genetic diversity in the red junglefowl populations. These results suggest that the ancestral populations of Thai indigenous chickens were large, and that a part of the red junglefowl population gene pool was not involved in the domestication process. In addition, some haplogroups that are distributed in other countries of Southeast Asia were not observed in either the red junglefowls or the indigenous chickens examined in the present study, suggesting that chicken domestication occurred independently across multiple regions in Southeast Asia.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hata A,Nunome M,Suwanasopee T,Duengkae P,Chaiwatana S,Chamchumroon W,Suzuki T,Koonawootrittriron S,Matsuda Y,Srikulnath Kdoi
10.1038/s41598-021-81589-7subject
Has Abstractpub_date
2021-01-21 00:00:00pages
2035issue
1issn
2045-2322pii
10.1038/s41598-021-81589-7journal_volume
11pub_type
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