Genetic diversity of sheep breeds from Albania, Greece, and Italy assessed by mitochondrial DNA and nuclear polymorphisms (SNPs)

Riccardo Negrini, Paolo Ajmone Marsan, Lorraine Pariset, Marco Mariotti, Maria Gargani, Stephane Joost, Trinidad Perez, Michael Bruford, Alessio Valentini

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

18 Citazioni (Scopus)

Abstract

We employed mtDNA and nuclear SNPs to investigate the genetic diversity of sheep breeds of three countries of the Mediterranean basin: Albania, Greece, and Italy. In total, 154 unique mtDNA haplotypes were detected by means of D-loop sequence analysis. The major nucleotide diversity was observed in Albania. We identified haplogroups, A, B, and C in Albanian and Greek samples, while Italian individuals clustered in groups A and B. In general, the data show a pattern reflecting old migrations that occurred in postneolithic and historical times. PCA analysis on SNP data differentiated breeds with good correspondence to geographical locations. This could reflect geographical isolation, selection operated by local sheep farmers, and different flock management and breed admixture that occurred in the last centuries.
Lingua originaleEnglish
pagine (da-a)1641-1659
Numero di pagine19
RivistaThe Scientific World Journal
Volume11
DOI
Stato di pubblicazionePubblicato - 2011

Keywords

  • Albania
  • Animals
  • DNA, Mitochondrial
  • Genetic Variation
  • Greece
  • Haplotypes
  • Italy
  • Polymorphism, Single Nucleotide
  • Principal Component Analysis
  • Sheep

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