Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/19699
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dc.contributor.authorStrucken, Evaen
dc.contributor.authorLee, Seung Hen
dc.contributor.authorJang, Gul Wen
dc.contributor.authorPorto-Neto, Laercio Ren
dc.contributor.authorGondro, Cedricen
dc.date.accessioned2016-12-08T15:03:00Z-
dc.date.issued2015-
dc.identifier.citationBMC Evolutionary Biology, v.15, p. 1-9en
dc.identifier.issn1471-2148en
dc.identifier.urihttps://hdl.handle.net/1959.11/19699-
dc.description.abstractBackground: The main cattle breed in Korea is the brown Hanwoo, which has been under artificial selection within a national breeding program for several decades. Varieties of the Hanwoo known as Jeju Black and Chikso were not included in the breeding program and remained isolated from the effects of recent artificial selection advancements. We analysed the Jeju Black and Chikso populations in regards to their genetic variability, state of inbreeding, as well as level of differentiation from the mainland Hanwoo population. Results: Jeju Black and Chikso were found to have small estimated effective population sizes (N e ) of only 11 and 7, respectively. Despite a small N e, higher than expected heterozygosity levels were observed (0.303 and 0.306), however, lower allelic richness was found for the two island populations (1.76 and 1.77) compared to the mainland population (1.81). The increase in heterozygosity could be due to environmental disease challenges that promoted maintenance of higher genetic variability; however, no direct proof exists. Increased heterozygosity due to a first generation crossing of genetically different populations is not recorded. The differentiation between the Korean populations had F ST values between 0.014 and 0.036 which is not as high as the differentiation within European beef or dairy cattle breeds (0.047-0.111). This suggests that the three populations have not separated into independent breeds. Conclusion: Results agree with an island model of speciation where the brown Hanwoo represents the ancestral breed, whilst the Jeju Black and Chikso diverge from this common ancestor, following different evolutionary trajectories. Nevertheless, differences are minor and whether Jeju Black and Chikso cattle will develop into discrete breeds or reintegrate with the main population has to be seen in the future and will largely depend on human management decisions. This offers a rare opportunity to accompany the development of new breeds but also poses challenges on how to preserve these incipient breeds and ensure their long term viability.en
dc.languageenen
dc.publisherBioMed Central Ltden
dc.relation.ispartofBMC Evolutionary Biologyen
dc.titleTowards breed formation by island model divergence in Korean cattleen
dc.typeJournal Articleen
dc.identifier.doi10.1186/s12862-015-0563-2en
dcterms.accessRightsGolden
dc.subject.keywordsAnimal Breedingen
local.contributor.firstnameEvaen
local.contributor.firstnameSeung Hen
local.contributor.firstnameGul Wen
local.contributor.firstnameLaercio Ren
local.contributor.firstnameCedricen
local.subject.for2008070201 Animal Breedingen
local.subject.seo2008830301 Beef Cattleen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailestrucke@une.edu.auen
local.profile.emailcgondro2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20161112-151551en
local.publisher.placeUnited Kingdomen
local.identifier.runningnumber284en
local.format.startpage1en
local.format.endpage9en
local.identifier.scopusid85016091568en
local.peerreviewedYesen
local.identifier.volume15en
local.access.fulltextYesen
local.contributor.lastnameStruckenen
local.contributor.lastnameLeeen
local.contributor.lastnameJangen
local.contributor.lastnamePorto-Netoen
local.contributor.lastnameGondroen
dc.identifier.staffune-id:estruckeen
dc.identifier.staffune-id:cgondro2en
local.profile.orcid0000-0002-2715-0733en
local.profile.orcid0000-0003-0666-656Xen
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:19889en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleTowards breed formation by island model divergence in Korean cattleen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorStrucken, Evaen
local.search.authorLee, Seung Hen
local.search.authorJang, Gul Wen
local.search.authorPorto-Neto, Laercio Ren
local.search.authorGondro, Cedricen
local.uneassociationUnknownen
local.identifier.wosid000366689000002en
local.year.published2015en
local.subject.for2020300305 Animal reproduction and breedingen
local.subject.seo2020100401 Beef cattleen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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