Mitochondrial DNA lineages of Italian Giara and Sarcidano horses L. Morelli1†, A. Useli1, D. Sanna1, M. Barbato1,2, D. Contu3, M. Pala4,5, M. Cancedda6 and P. Francalacci1 1Dipartimento di Scienze della Natura e del Territorio, Unità di Zoologia Archeozoologia e Genetica, Università di Sassari, Sassari, Italy 2Cardiff School of Biosciences, Cardiff University, Cardiff, UK 3Laboratorio di Immunogenetica, Ospedale Microcitemico, Cagliari, Italy 4Dipartimento di Biologia e Biotecnologie “L. Spallanzani” Università di Pavia, Pavia, Italy 5School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, UK 6Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy †This paper is dedicated to the memory of Laura Morelli who prematurely passed away before the publication. Corresponding author: A. Useli E-mail:
[email protected] Genet. Mol. Res. 13 (4): 8241-8257 (2014) Received December 18, 2012 Accepted June 14, 2013 Published October 20, 2014 DOI http://dx.doi.org/10.4238/2014.October.20.1 ABSTRACT. Giara and Sarcidano are 2 of the 15 extant native Italian horse breeds with limited dispersal capability that originated from a larger number of individuals. The 2 breeds live in two distinct isolated locations on the island of Sardinia. To determine the genetic structure and evolutionary history of these 2 Sardinian breeds, the first hypervariable segment of the mitochondrial DNA (mtDNA) was sequenced and analyzed in 40 Giara and Sarcidano horses and compared with publicly available mtDNA data from 43 Old World breeds. Four Genetics and Molecular Research 13 (4): 8241-8257 (2014) ©FUNPEC-RP www.funpecrp.com.br different analyses, including genetic distance, analysis of molecular variance, haplotype sharing, and clustering methods, were used to study the genetic relationships between the Sardinian and other horse breeds.