Genetic signature of hybridization between Chinese spot-billed ducks and domesticated ducks.
Anim Genet
; 51(6): 866-875, 2020 Dec.
Article
en En
| MEDLINE
| ID: mdl-33020910
ABSTRACT
In this study, we analyzed 93 whole genomes from Chinese spot-billed ducks (CSB), meat-type ducks (MET), and egg and dual purpose-type ducks (EDT) to characterize the genetic material flowing between the CSB and modern ducks. Using a frequency of shared identical-by-descent method, approximately 10.9 Mb introgression segments containing 140 genes were identified showing the signatures of introgression between CSB and EDT. Meanwhile, nearly 10.6 M introgression regions containing 149 genes were identified between CSB and MET. Based on the haplotypes tree of each segment, we found that the introgression between CSB and domesticated ducks was asymmetric with a high level of gene flow from domestic to CSB and a low level of migration in the opposite direction. Moreover, we identified several genes that were introgressions from CSB and showed the signature of positive selection, which may contribute to the breeding of modern ducks. Our results provide new insight into the evolution and breeding history of domestic ducks and may be useful for the future management of wild and domestic duck populations.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Patos
/
Flujo Génico
/
Introgresión Genética
/
Animales Domésticos
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Anim Genet
Asunto de la revista:
GENETICA
/
MEDICINA VETERINARIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
China