+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Founder and present maternal diversity in two endangered Spanish horse breeds assessed via pedigree and mitochondrial DNA information

Founder and present maternal diversity in two endangered Spanish horse breeds assessed via pedigree and mitochondrial DNA information

Journal of Animal Breeding and Genetics 129(4): 271-279

Pedigree information and 179 mtDNA sequences from two endangered Spanish horse breeds, the Asturcón pony (143) and the Mallorquí horse (36), were analysed to asses: (i) the pedigree and molecular maternal genetic diversity of the two breeds; (ii) the concordance between the dam lines recorded in the corresponding studbooks and the mtDNA haplotypes identified; and (iii) to assess the losses of maternal genetic variability occurred from the foundation of the studbooks to present. Up to 50 Asturcón and 18 Mallorquí founder dam lines were identified in the studbooks analysed. Up to 315 Asturcón mares and 51 Mallorquí mares that foaled in the last 5 years of recording formed a reference population. Only 35 Asturcón and 13 Mallorquí founder dam lines were represented in their reference populations. Sequences from a total of 38 Asturcón and 12 Mallorquí dam lines could be obtained. The 179 sequences obtained gave 15 different haplotypes, 11 and 9 of them being identified, respectively, in the Asturcón pony and in the Mallorquí horse. Five different haplotypes (roughly two-thirds of the sequences) were shared by the two horse breeds. Most dam lines analysed had a single mtDNA haplotype. However, more than one haplotype was detected within eight of the dam lines in Asturcón pony. The found inconsistencies are likely to result from deficiencies in genebank management. The maternal N(e) (mN(e)) computed using the dam line information was higher in the Asturcón pony (20.5) than in the Mallorquí horse (15.9), while these figures were on the opposite direction for the haplotypic line information (6.4 and 9.4, respectively). The ratio of the computed mN(e) values to the actual number of founder dam lines were always higher in the Mallorquí horse probably due to a more balanced distribution of individuals kept for reproduction among studs. Consequences for the conservation programmes of the analysed breeds are discussed.

(PDF emailed within 0-6 h: $19.90)

Accession: 053290513

Download citation: RISBibTeXText

PMID: 22775259

DOI: 10.1111/j.1439-0388.2012.00995.x

Related references

Genetic diversity and demographic structure of the endangered Sorraia horse breed assessed through pedigree analysis. Livestock Science 152(1): 1-10, 2013

Quantifying diversity losses due to selection for scrapie resistance in three endangered Spanish sheep breeds using microsatellite information. Preventive Veterinary Medicine 91(2-4): 172-178, 2010

Genetic diversity of maternal lineage in the endangered Kiso horse based on polymorphism of the mitochondrial DNA D-loop region. Journal of Veterinary Medical Science 76(11): 1451-1456, 2015

Population history and genetic variability in the Spanish Arab Horse assessed via pedigree analysis. Livestock Science 113(1): 24-33, 2008

Origins and genetic diversity of British cattle breeds in Brazil assessed by pedigree analyses. Journal of Animal Science 92(5): 1920-1930, 2015

Genetic diversity in the Lusitano horse breed assessed by pedigree analysis. Livestock Science 148(1-2), 2012

Genetic diversity and relationships of endangered Spanish cattle breeds. Journal of Heredity 98(7): 687-691, 2007

Genetic diversity in endangered and common Canadian horse breeds. Animal Genetics 29(SUPPL 1): 16, 1998

Analysis of relationships between German heavy horse breeds based on pedigree information. Berliner und Munchener Tierarztliche Wochenschrift 117(1-2): 72-75, 2004

Genetic diversity and variability in endangered Pantesco and two other Sicilian donkey breeds assessed by microsatellite markers. Thescientificworldjournal 2012: 648427-648427, 2012

Genetic diversity among elite sorghum inbred lines assessed with DNA markers and pedigree information. Crop Science 36(5): 1385-1392, 1996

Genetic diversity of a large set of horse breeds raised in France assessed by microsatellite polymorphism. Genetics, Selection, Evolution 41: 5-5, 2009

Genetic diversity and divergence among Spanish beef cattle breeds assessed by a bovine high-density SNP chip. Journal of Animal Science 93(11): 5164-5174, 2016

Genetic diversity and admixture analysis of Sanfratellano and three other Italian horse breeds assessed by microsatellite markers. Animal 2(7): 991-998, 2008

Analysis of diversity and population structure in the Lipizzan horse breed based on pedigree information. Livestock Production Science 77(2/3): 137-146, 2002