Molecular inference in the colonization of cattle in Ecuador

Molecular inference in the colonization of cattle in Ecuador

The aim of the present paper was to evaluate genetic diversity within and among Ecuadorian bovine breeds using microsatellite markers. The genetic identity and the exotic influences from taurine or zebuine cosmopolitan breeds on Macabea, Loja, Santa Elena, Manabí and Isla de Puná breeds were evaluat...

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Published in:Research in veterinary science Vol. 132; pp. 357 - 368
Main Authors: Delgado Bermejo, Juan Vicente, Barba Capote, Cecilio José, Aguirre Riofrío, Edgar Lenin, Cabezas Congo, Ronald, Cevallos Falquez, Orly Fernando, Rizzo Zamora, Lauden Geobakg, Vargas Burgos, Julio Cesar, Navas González, Francisco Javier, Álvarez Franco, Luz Ángela, Biobovis, Consorcio, Martínez Martínez, Amparo
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-10-2020
Elsevier Limited
Subjects:
Animals
Bovine
Cattle
Cattle - genetics
Colonization
Consortia
Creole populations
Datasets
Ecuador
Gene Frequency
Genetic characterization
Genetic distance
Genetic diversity
Genetic markers
Genetic relationship
Genetic Variation
International agreements
Markers
Microsatellite Repeats
Microsatellites
Phylogeny
Population genetics
Population structure
Population studies
Populations
Veterinary medicine
Ecuador
Argentina
Uruguay
Spain
Genetic characterization
Microsatellites
Phylogeny
Bovine
Creole populations
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Summary:The aim of the present paper was to evaluate genetic diversity within and among Ecuadorian bovine breeds using microsatellite markers. The genetic identity and the exotic influences from taurine or zebuine cosmopolitan breeds on Macabea, Loja, Santa Elena, Manabí and Isla de Puná breeds were evaluated. Twenty-eight microsatellite markers were tested across 254 individuals belonging to the five Ecuadorian populations to investigate intra and inter population genetic diversity levels. Nineteen markers in common with a set of 1595 samples of 35 previously typed breeds were used to determine the potential origin of Ecuadorian bovine breeds and to identify and quantify their genetic relationships. The findings of FIS > FST (0.0814 > 0.0499), even in the context of low but significant FST values, may be indicative of the intrapopulation origin of the variability of allelic frequencies across populations. Conclusively, the study of genetic distances and population structure suggested the origin of Ecuadorian populations may likely stem from Southern Spanish breeds, with no significant recent influence from cosmopolitan Taurine or Zebuine breeds. These findings may provide a solid basis for the demonstration of an Ecuadorian breeds identity in the framework of the genetic conservation of the American creole populations. •Ecuadorian breeds are genetically stable and highly differentiated.•Despite Zebu slight traces, these breeds ascribe to Taurine evolutive group.•They stem from Southwestern Spanish breeds and Red Orthoid Branch in XVth Century.•Expansions from Pacific Colombian, Panamá, and Río de la Plata are evident.•This is the starting point to protect Ecuadorian cultural breed heritage.
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ISSN:0034-5288
1532-2661
DOI:10.1016/j.rvsc.2020.07.011