Analysis on Genetic Diversity and Isolation Mechanism by Distance of Different Ecological Type Sheep Breeds in Mongolia Sheep Group

Sun, Weibang; Chang, Hong; Ji, Dejun; Liao, Xinjun; Du, Lei; Lu, S. X.; Tsunoda, Kenji

doi:10.1016/s1673-8527(07)60113-1

Cited by 14 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This pattern could also have occurred if farms between Campo Maior and Angical had purchased sires with different genetic characteristics. However it is important to consider that human manipulation of herds can result in patterns of "isolation" or "homogenization" that are not as obvious to understand as those of natural populations (Sun et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil

et al. 2015

View full text Add to dashboard Cite

-The objective of this study was to characterize the genetic variability of Anglo-Nubian goats using microsatellite markers. The study was conducted using herds from four municipalities of Central-Northern Piauí (Teresina, José de Freitas, Campo Maior, and Angical), where technical information is scarce. Seven markers suggested by FAO were used (ILSTS11, McM527, INRA23, ETH10, OarfCB304, OarfCB48, and MAF209). The samples were genotyped using a 7% polyacrylamide gel. The average number of alleles per locus was 4.0, with observed and expected heterozygosity of 0.38 and 0.55, respectively. Few deviations from the Hardy-Weinberg equilibrium were observed for each population. Only two loci deviated significantly in two localities. The coefficient of gene differentiation (G ST' ) indicated that 11.9% of the genetic variation was distributed among populations, and according to the coefficient of inbreeding (G IS = 0.23 and F IS = 0.23), there is a deficiency of heterozygotes within populations. These findings corroborate the Bayesian analyses performed with the STRUCTURE software, which revealed three distinct and moderately structured groups. The graphic analysis showed that Teresina and José de Freitas are isolated groups, while Angical and Campo Maior share most of their alleles. Despite this, the level of diversity among herds was low. Based on this genetic structure, exchange of reproducers among municipalities is recommended for the maintenance of the breed.

show abstract

Section: Discussionmentioning

confidence: 99%

A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The differences might be caused by the difference of study methods and sheep breeds sampling (Sun et al 2009). …”

Section: Genetic Relationships Among the Large-fat-tailed Sheepmentioning

confidence: 99%

“…Another main problem about the origin and phylogenic relationships of sheep is the different methods used, different conclusions drawn (Sun et al 2009). Genetic studies have indicated that morphological characteristics of the breeds that giving incomplete or wrong information on their evolutionary history (Lei et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial DNA diversity, origin, and phylogenic relationships of three Chinese large-fat-tailed sheep breeds

Zhao

Zhang

et al. 2011

Trop Anim Health Prod

View full text Add to dashboard Cite

China is abundant of sheep genetic resources. A total of 55 sequences containing the Ovis aries mtDNA D: -loop of three large-fat-tailed sheep breeds, named Lanzhou, Tong, and Han were retrieved from GenBank to investigate their genetic diversity, origin, and phylogenetic evolution. The results showed that the sheep breeds in our study proved to be extremely diverse, the average haplotype diversity and nucleotide diversity were 0.987 ± 0.006 and 0.03956 ± 0.00206, respectively. The 55 sequences gave 39 different haplotypes. Phylogenetic analyses revealed that there were three distinct mtDNA haplogroups: A, B, and C, in which haplogroup A was predominant and had experienced population expansion events. Clustering analysis showed that the large-fat-tailed sheep breeds clustered into one group and were closely related to the Mongolian sheep and then European mouflon sheep (Ovis musimon). The results contribute to the knowledge of Chinese sheep breeds and the plan of conservation programs on large-fat-tailed sheep.

show abstract

“…In recent years, several microsatellite studies on diversity in Chinese sheep have been published (Jia et al 2003;Gao and Wu 2005;Yuan et al 2006;Sun et al 2007;Zhong et al 2011). However, these studies primarily considered a relatively small group of breeds.…”

Section: Introductionmentioning

confidence: 99%

Conservation genetics in Chinese sheep: diversity of fourteen indigenous sheep (Ovis aries) using microsatellite markers

Guang‐Xin

Zhong

et al. 2016

Ecology and Evolution

View full text Add to dashboard Cite

The domestic sheep (Ovis aries) has been an economically and culturally important farm animal species since its domestication around the world. A wide array of sheep breeds with abundant phenotypic diversity exists including domestication and selection as well as the indigenous breeds may harbor specific features as a result of adaptation to their environment. The objective of this study was to investigate the population structure of indigenous sheep in a large geographic location of the Chinese mainland. Six microsatellites were genotyped for 611 individuals from 14 populations. The mean number of alleles (±SD) ranged from 7.00 ± 3.69 in Gangba sheep to 10.50 ± 4.23 in Tibetan sheep. The observed heterozygote frequency (±SD) within a population ranged from 0.58 ± 0.03 in Gangba sheep to 0.71 ± 0.03 in Zazakh sheep and Minxian black fur sheep. In addition, there was a low pairwise difference among the Minxian black fur sheep, Mongolian sheep, Gansu alpine merino, and Lanzhou fat‐tailed sheep. Bayesian analysis with the program STRUCTURE showed support for 3 clusters, revealing a vague genetic clustering pattern with geographic location. The results of the current study inferred high genetic diversity within these native sheep in the Chinese mainland.

show abstract

Analysis on Genetic Diversity and Isolation Mechanism by Distance of Different Ecological Type Sheep Breeds in Mongolia Sheep Group

Cited by 14 publications

References 9 publications

A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil

A note on the distribution of genetic diversity of Anglo-Nubian goats in central-northern farms of Piauí, Brazil

Mitochondrial DNA diversity, origin, and phylogenic relationships of three Chinese large-fat-tailed sheep breeds

Conservation genetics in Chinese sheep: diversity of fourteen indigenous sheep (Ovis aries) using microsatellite markers

Contact Info

Product

Resources

About