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

Wei Sun; Hong Chang; Dejun Ji; Xinjun Liao; Lei Du; Shengxia Lu; Tsunoda Kenji

doi:10.1016/S1673-8527(07)60113-1

Volume 34 Issue 11

Nov. 2007

Turn off MathJax

Article Contents

Article Navigation > Journal of Genetics and Genomics > 2007 > 34(11): 1001-1009

PDF( 241 KB)

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

doi: 10.1016/S1673-8527(07)60113-1

a
Animal Science & Technology College, Yangzhou University, Yangzhou 225009, China
b
Scholl of Medicine, Showa University, Tokyo142-8555, Japan

More Information

Corresponding author: E-mail address: hoch@yzcn.net (Hong Chang)
Received Date: 2006-08-28
Accepted Date: 2007-03-05

Available Online: 2007-11-22

Publish Date: 2007-11-20

Abstract

Abstract

In the present study with Tan sheep, small-tailed Han sheep, Hu sheep, Tong sheep, and Wadi sheep, we detected the distribution of gene frequency of several microsatellite sites in different chromosomes, the result showed that: 1) Hu sheep was in the status of Hardy-Weinberg extreme disequilibrium (P < 0.01), while populations including Tong sheep, small-tailed Han sheep, Tan sheep, and Wadi sheep were in Hardy-Weinberg equilibrium ( P > 0.05). 2) Variance analysis of the heterozygosity and polymorphic information content at microsatellite makers showed that there were not significant differences among populations as to heterozygosity and PIC ( P > 0.05), as to effective number of alleles there were not significant differences both among Tan sheep, Hu sheep, Tong sheep, and Wadi sheep, and between Wadi sheep and small-tailed sheep ( P > 0.05), but between the former three populations and the latter two populations, there were significant differences (0.01< P < 0.05). The variation levels of small-tailed Han sheep was the highest in the five populations based on microsatellite maker data, subsequently followed by Wadi sheep, Tong sheep, Tan sheep, and then Hu sheep. 3) The phylogenetic relationships of the five sheep populations in this study did not meet the mechanism of isolation by distance, and the genetic differentiation relationships among five sheep populations were not closely linearly correlative with their geography distribution. Our findings supported related records in literature:The five populations originated on different time stage from the primogenitor population and communicated genetically with each other thereafter in the process of natural and artificial selection and on different ecological environment.
- Mongolia sheep group,
- different ecological type,
- genetic diversity,
- isolation by distance

FullText(HTML)

References(25)

References

[1]	Xie, CX
[2]	Bo, WC Primary discuss of history for Tibetan sheep Agriculture archaeology (1987),pp. 380-385
[3]	Feng, WQ Primary discuss of breeding history for ancient sheep in China Agriculture archaeology (1991),pp. 338-345
[4]	Editorial section of “Records of Sheep and Goat Breeds in China”
[5]	Liu, YF, Gao, et al. A study on preparation of dna from sheep blood Journal of Shihezi University (Natural Science) (1997),pp. 136-138
[6]	Crawford, AM, Dodds, et al. An autosomal genetic linkage map of the sheep genome Genetics, 140 (1995),pp. 703-724
[7]	Buchanan, FC, Crawford, et al. Ovine dinucleotide repeat polymorphism at the MAF70 locus Anim Genet, 23 (1992),p. 185
[8]	Buchanan, FC, Crawford, et al. Ovine dinucleotide repeat polymorphism at the MAF33 locus Anim Genet, 23 (1992),p. 186
[9]	Buchanan, FC, Crawford, et al. Ovine microsatellites at the OarFCB11, OarFCB128, OarFCB193, OarFCB266 and OarFCB304 loci Anim Genet, 24 (1993),p. 145
[10]	Nei, M, Tajima, et al. Accuracy of estimated phylogenetic trees from molecular data J Mol Evol, 19 (1983),pp. 153-170
[11]	Botsein, D, White, et al. Construction of a genetic linkage map in man using restriction fragment length polymorphisms Am J Hum Genet, 32 (1980),pp. 314-331
[12]	Kimura, M, Crow, et al. The numberof alleles that can be maintained in a finite population Genetics, 49 (1974),pp. 725-738
[13]	Raymond, M, Rousset, et al. GENEPOP (version3.3) population genetics software for exact tests and ecumenicism J J Hered, 86 (1995),pp. 248-249
[14]	Rohlf JF. NTSYSpc: Numerical Taxonomy and Mulitivariate Analysis System. Version 2.1, Users Guide. Exeter Software, Setauket, New York, 2000.
[15]	Slatkin, M Isolation by distance in equilibrium and non-equi- librium populations Evolution, 47 (1993),pp. 264-279
[16]	Rousset, F Genetics, 145 (1997),pp. 1219-1228
[17]	Sun, W
[18]	Zou, JH, Wang, et al.
[19]	Lei, ZQ Tong sheep in Shaanxi Journal of animal science and veterinary medicine, 18 (1999),pp. 35-36
[20]	Animal Bureau of Shandong Province, Editorial Committee of the “Breeds of Domestic Animal and Poultry in Shandong”. Breeds of Domestic Animal and Poultry in Shandong, Shenzhen Haitian Publishers, 1999, 51–53.
[21]	Li, ZN Sheep Science in China Agricultural publishing House (1993),pp. 44-55
[22]	Animal Bureau of Ningxia Province, Editorial Committee of the “Breeds of Domestic Animal and Poultry in Ningxia”. Breeds of Domestic Animal and Poultry in Ningxia, 1984, 1–5 (in Chinese).
[23]	Animal Bureau of Gansu Province, Breeds of Domestic Animal and Poultry in Gansu, Shenzhen Haitian Publishers, People Publishing House of Gansu, 1986, 69–71(in Chinese).
[24]	Ran, RJ, Li, et al. Discuss on the breeding history for the Wadi sheep China sheep Science, 3 (1998),pp. 13-14
[25]	Shan, NS Primary discuss of history for Han sheep China Semifine-wool (1983),pp. 15-17