Mitochondrial DNA diversity and demographic history of Black-boned chickens in China
| Autor: | Xunhe Huang, Xiquan Zhang, Yong-Wang Miao, Wei Luo, Zhuoxian Weng, Du Bingwang, Yujing He, Fusheng Zhong |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mitochondrial DNA haplogroup animal structures Demographic history animal diseases media_common.quotation_subject Black-boned chicken Biology 010603 evolutionary biology 01 natural sciences Haplogroup Genetic diversity 03 medical and health sciences Genetics China Molecular Biology Mitogenome Announcement mtDNA d-loop media_common breeding history 030104 developmental biology Evolutionary biology Diversity (politics) Research Article |
| Zdroj: | Mitochondrial DNA. Part B, Resources article-version (VoR) Version of Record |
| ISSN: | 2380-2359 |
| Popis: | Black-boned chickens (Gallus domesticus, herein abbreviated BBCs) are well known for their unique appearance and medicinal properties and have a long breeding history in China. However, the genetic diversity and demographic history of BBCs remain unclear. In this study, we analyzed 844 mitochondrial DNA D-loop sequences, including 346 de novo sequences and 498 previously published sequences from 20 BBC breeds. We detected a generally high level of genetic diversity among the BBCs, with average haplotype and nucleotide diversities of 0.917 ± 0.0049 and 0.01422, respectively. Nucleotide diversity was highest in populations from Southwest China (0.01549 ± 0.00026), particularly in Yunnan Province (0.01624 ± 0.00025). Significant genetic divergence was detected between most breeds, particularly between Yunnan chickens and those from all other provinces. Haplogroups F and G had the highest levels of genetic diversity and were restricted to Southwest China, particularly Yunnan Province. Based on neutrality tests and mismatch distribution analyses, we did not obtain evidence for rapid population expansions and observed similar demographic histories in BBCs and local non-BBCs. Our results suggest that Chinese BBCs have complex breeding histories and may be selected in situ from local domestic chickens. These results improve our understanding of the genetic heritage and breeding histories of these desirable chickens. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|