Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations
The population sizes of three Korean indigenous cattle populations have been drastically reduced over the past decades. In this study, we examined the extent to which reduction in populations influenced genetic diversity, population structure and demographic history using complete mitochondrial DNA...
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| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2012-09-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/25-159.pdf |
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| author | Hailu Dadi Seung-Hwan Lee Kyoung Sup Jung Jae Won Choi Moon-Suck Ko Young-Joon Han Jong-Joo Kim Kwan-Suk Kim |
| author_facet | Hailu Dadi Seung-Hwan Lee Kyoung Sup Jung Jae Won Choi Moon-Suck Ko Young-Joon Han Jong-Joo Kim Kwan-Suk Kim |
| author_sort | Hailu Dadi |
| collection | DOAJ |
| description | The population sizes of three Korean indigenous cattle populations have been drastically reduced over the past decades. In this study, we examined the extent to which reduction in populations influenced genetic diversity, population structure and demographic history using complete mitochondrial DNA (mtDNA) control region sequences. The complete mtDNA control region was sequenced in 56 individuals from Korean Black (KB), Jeju Black (JEB) and Korean Brindle (BRI) cattle populations. We included 27 mtDNA sequences of Korean Brown (BRO) from the GenBank database. Haplotype diversity estimate for the total population was high (0.870) while nucleotide diversity was low (0.004). The KB showed considerably low nucleotide (π = 0.001) and haplotype (h = 0.368) diversities. Analysis of molecular variance revealed a low level of genetic differentiation but this was highly significant (p<0.001) among the cattle populations. Of the total genetic diversity, 7.6% was attributable to among cattle populations diversity and the rest (92.4%) to differences within populations. The mismatch distribution analysis and neutrality tests revealed that KB population was in genetic equilibrium or decline. Indeed, unless an appropriate breeding management practice is developed, inbreeding and genetic drift will further impoverish genetic diversity of these cattle populations. Rational breed development and conservation strategy is needed to safeguard these cattle population. |
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| format | Article |
| id | doaj.art-fa7e3b86ee704d3d883ef4faba5a50fb |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-04-12T03:13:47Z |
| publishDate | 2012-09-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-fa7e3b86ee704d3d883ef4faba5a50fb2022-12-22T03:50:15ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172012-09-012591223122810.5713/ajas.2012.1212222802Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle PopulationsHailu DadiSeung-Hwan Lee0Kyoung Sup Jung1Jae Won Choi2Moon-Suck Ko3Young-Joon Han4Jong-Joo Kim5Kwan-Suk Kim6 Hanwoo Experiment Station, National Institute of Animal Science, Pyeongchang-gun, Kangwon-Do 232-950, .Korea Institute of Livestock and Veterinary Research, Cheongwon-gun, Chungbuk 363-931, .Korea Institute of Livestock and Veterinary Research, Cheongwon-gun, Chungbuk 363-931, .Korea Subtropical Animal Experimental Station, National Institute of Animal Science, Jeju, Jeju-do 690-150, .Korea Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk 361-763, .Korea School of Biotechnology, Yeungnam University, Gyeongsan 712-749, .Korea Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk 361-763, .KoreaThe population sizes of three Korean indigenous cattle populations have been drastically reduced over the past decades. In this study, we examined the extent to which reduction in populations influenced genetic diversity, population structure and demographic history using complete mitochondrial DNA (mtDNA) control region sequences. The complete mtDNA control region was sequenced in 56 individuals from Korean Black (KB), Jeju Black (JEB) and Korean Brindle (BRI) cattle populations. We included 27 mtDNA sequences of Korean Brown (BRO) from the GenBank database. Haplotype diversity estimate for the total population was high (0.870) while nucleotide diversity was low (0.004). The KB showed considerably low nucleotide (π = 0.001) and haplotype (h = 0.368) diversities. Analysis of molecular variance revealed a low level of genetic differentiation but this was highly significant (p<0.001) among the cattle populations. Of the total genetic diversity, 7.6% was attributable to among cattle populations diversity and the rest (92.4%) to differences within populations. The mismatch distribution analysis and neutrality tests revealed that KB population was in genetic equilibrium or decline. Indeed, unless an appropriate breeding management practice is developed, inbreeding and genetic drift will further impoverish genetic diversity of these cattle populations. Rational breed development and conservation strategy is needed to safeguard these cattle population.http://www.ajas.info/upload/pdf/25-159.pdfCattleMitochondrial DNAGenetic DiversityPopulation Expansion |
| spellingShingle | Hailu Dadi Seung-Hwan Lee Kyoung Sup Jung Jae Won Choi Moon-Suck Ko Young-Joon Han Jong-Joo Kim Kwan-Suk Kim Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations Asian-Australasian Journal of Animal Sciences Cattle Mitochondrial DNA Genetic Diversity Population Expansion |
| title | Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations |
| title_full | Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations |
| title_fullStr | Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations |
| title_full_unstemmed | Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations |
| title_short | Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations |
| title_sort | effect of population reduction on mtdna diversity and demographic history of korean cattle populations |
| topic | Cattle Mitochondrial DNA Genetic Diversity Population Expansion |
| url | http://www.ajas.info/upload/pdf/25-159.pdf |
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