Mitochondrial diversity and the origin of Iberian sheep

<p>Abstract</p> <p>Mitochondrial DNA diversity was analysed in 19 Iberian and six foreign sheep breeds. Three mtDNA lineages (B, A and C) were found in the Iberian sheep, with type B clearly predominating over the others. The results were analysed for each of the morphologically de...

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Main Authors: Bayón Yolanda, San Primitivo Fermín, Molina Antonio, Brito Nuno, Arranz Juan-José, Pedrosa Susana
Format: Article
Language:deu
Published: BMC 2007-01-01
Series:Genetics Selection Evolution
Subjects:
Online Access:http://www.gse-journal.org/content/39/1/91
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author Bayón Yolanda
San Primitivo Fermín
Molina Antonio
Brito Nuno
Arranz Juan-José
Pedrosa Susana
author_facet Bayón Yolanda
San Primitivo Fermín
Molina Antonio
Brito Nuno
Arranz Juan-José
Pedrosa Susana
author_sort Bayón Yolanda
collection DOAJ
description <p>Abstract</p> <p>Mitochondrial DNA diversity was analysed in 19 Iberian and six foreign sheep breeds. Three mtDNA lineages (B, A and C) were found in the Iberian sheep, with type B clearly predominating over the others. The results were analysed for each of the morphologically determined breed groups in Iberian sheep: <it>Merino</it>, <it>Entrefino</it>, <it>Churro </it>and <it>Iberian </it>trunks. MtDNA lineage C was found only in the Iberian trunk composed of Montesina and Ojalada. These two populations had high mtDNA variability, and in the Iberian sheep only Merino Branco had more variation. The other three <it>Merino </it>types studied showed moderate variability, including the most authentic <it>Merino</it>, the Spanish Merino. These three Merinos clustered closely in a multidimensional scaling representation of distances, while the fourth breed (Merino Branco) showed a clear separation. As for the other two trunks, breeds from the <it>Churro </it>group showed greater maternal uniformity while results for populations included in the so-called <it>Entrefino </it>trunk seemed to have a more heterogeneous maternal origin. The results obtained are discussed with available data from nuclear markers and with morphological classifications, and all this information is analysed in relation to the origin of the different Iberian sheep breeds.</p>
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spelling doaj.art-ee32da99e60b4efda66c5a37cfdeb3132022-12-22T01:08:48ZdeuBMCGenetics Selection Evolution0999-193X1297-96862007-01-013919110310.1186/1297-9686-39-1-91Mitochondrial diversity and the origin of Iberian sheepBayón YolandaSan Primitivo FermínMolina AntonioBrito NunoArranz Juan-JoséPedrosa Susana<p>Abstract</p> <p>Mitochondrial DNA diversity was analysed in 19 Iberian and six foreign sheep breeds. Three mtDNA lineages (B, A and C) were found in the Iberian sheep, with type B clearly predominating over the others. The results were analysed for each of the morphologically determined breed groups in Iberian sheep: <it>Merino</it>, <it>Entrefino</it>, <it>Churro </it>and <it>Iberian </it>trunks. MtDNA lineage C was found only in the Iberian trunk composed of Montesina and Ojalada. These two populations had high mtDNA variability, and in the Iberian sheep only Merino Branco had more variation. The other three <it>Merino </it>types studied showed moderate variability, including the most authentic <it>Merino</it>, the Spanish Merino. These three Merinos clustered closely in a multidimensional scaling representation of distances, while the fourth breed (Merino Branco) showed a clear separation. As for the other two trunks, breeds from the <it>Churro </it>group showed greater maternal uniformity while results for populations included in the so-called <it>Entrefino </it>trunk seemed to have a more heterogeneous maternal origin. The results obtained are discussed with available data from nuclear markers and with morphological classifications, and all this information is analysed in relation to the origin of the different Iberian sheep breeds.</p>http://www.gse-journal.org/content/39/1/91mitochondrial DNAlocal sheepsheep origin
spellingShingle Bayón Yolanda
San Primitivo Fermín
Molina Antonio
Brito Nuno
Arranz Juan-José
Pedrosa Susana
Mitochondrial diversity and the origin of Iberian sheep
Genetics Selection Evolution
mitochondrial DNA
local sheep
sheep origin
title Mitochondrial diversity and the origin of Iberian sheep
title_full Mitochondrial diversity and the origin of Iberian sheep
title_fullStr Mitochondrial diversity and the origin of Iberian sheep
title_full_unstemmed Mitochondrial diversity and the origin of Iberian sheep
title_short Mitochondrial diversity and the origin of Iberian sheep
title_sort mitochondrial diversity and the origin of iberian sheep
topic mitochondrial DNA
local sheep
sheep origin
url http://www.gse-journal.org/content/39/1/91
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AT sanprimitivofermin mitochondrialdiversityandtheoriginofiberiansheep
AT molinaantonio mitochondrialdiversityandtheoriginofiberiansheep
AT britonuno mitochondrialdiversityandtheoriginofiberiansheep
AT arranzjuanjose mitochondrialdiversityandtheoriginofiberiansheep
AT pedrosasusana mitochondrialdiversityandtheoriginofiberiansheep