Genome-wide analysis suggests multiple domestication events of Chinese local pigs.
Anim Genet
; 53(3): 293-306, 2022 Jun.
Article
em En
| MEDLINE
| ID: mdl-35277870
ABSTRACT
Chinese local pigs have abundant phenotypes as a result of different cultures and habits of Chinese populations, geographic constraints and the long history of pig domestication. A comprehensive investigation of local Chinese pigs will benefit biodiversity research and future breeding practices. However, their classification and demographic history are not yet clear. We studied 91 Chinese local pigs from 14 breeds and 15 Chinese wild boars to reveal the dispersal of Chinese pigs, genetic groups and the demographic history. Based on spatial feature analyses, we believe that the geographic landscape played an important role in the dispersal of local pigs. According to genetic studies, Chinese pigs are divided into three groups where each group appears to have a distinct background. The nucleotide diversity, observed heterozygosity, runs of homozygosity and inbreeding coefficient varied among the groups and widespread migration also existed between the groups. Furthermore, demographic models have been constructed to explain the evolutionary relationship between the groups using the approximate Bayesian computation approach. These suggested that Chinese local pigs are inherited from an extinct Sus scrofa population from ~22 000 years ago. Then, the three groups diverged from ancestors ~16 000, ~11 000 and ~8700 years ago respectively. This study advances our understanding of the genetic variation and demographic history of Chinese local pigs.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Genoma
/
Domesticação
Tipo de estudo:
Prognostic_studies
Limite:
Animals
País/Região como assunto:
Asia
Idioma:
En
Revista:
Anim Genet
Assunto da revista:
GENETICA
/
MEDICINA VETERINARIA
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China