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Browsing by Author "Gama, Luis Telo"

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    The genetic ancestry of American Creole cattle inferred from uniparental and autosomal genetic markers
    Ginja, Catarina; Gama, Luis Telo; Cortes, Oscar; Martin Burriel, Inmaculada; Luis Vega-Pla, Jose; Penedo, Cecilia; Sponenberg, D. Phillip; Canon, Javier; Sanz, Arianne; do Egito, Andrea Alves; Angela Alvarez, Luz; Giovambattista, Guillermo; Agha, Saif; Rogberg-Munoz, Andres; Cassiano Lara, Maria Aparecida; Delgado Bermejo, Juan Vicente; Martínez, Amparo; Afonso, Sonia; Aguirre, Lenin; Armstrong, Eileen; Camacho Vallejo, María Esperanza; Canales, Amado; Cassama, Bernardo; Contreras, Gloria; Moras Cordeiro, J. M.; Dunner, Susana; Elbeltagy, Ahmed; Soares Fioravanti, Maria Clorinda; Gomez Carpio, Mayra; Gomez, Mariano; Hernandez, Antonio; Hernandez, Darwin; Juliano, Raquel Soares; Landi, Vincenzo; Marques, Ribamar; Martinez, Ruben D.; Roberto Martinez, O.; Melucci, Lilia; Molina Flores, Baldomero; Mujica, Fernando; Pares i Casanova, Pere-Miquel; Quiroz, Jorge; Rodellar, Clementina; Tjon, Gerald; Adebambo, Tumininu; Uffo, Odalys; Cesar Vargas, Julio; Villalobos, Axel; Zaragoza, Pilar (Springer Nature, 2019-08-07)
    Cattle imported from the Iberian Peninsula spread throughout America in the early years of discovery and colonization to originate Creole breeds, which adapted to a wide diversity of environments and later received influences from other origins, including zebu cattle in more recent years. We analyzed uniparental genetic markers and autosomal microsatellites in DNA samples from 114 cattle breeds distributed worldwide, including 40 Creole breeds representing the whole American continent, and samples from the Iberian Peninsula, British islands, Continental Europe, Africa and American zebu. We show that Creole breeds differ considerably from each other, and most have their own identity or group with others from neighboring regions. Results with mtDNA indicate that T1c-lineages are rare in Iberia but common in Africa and are well represented in Creoles from Brazil and Colombia, lending support to a direct African influence on Creoles. This is reinforced by the sharing of a unique Y-haplotype between cattle from Mozambique and Creoles from Argentina. Autosomal microsatellites indicate that Creoles occupy an intermediate position between African and European breeds, and some Creoles show a clear Iberian signature. Our results confirm the mixed ancestry of American Creole cattle and the role that African cattle have played in their development.
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    On the origins of American Criollo pigs: A common genetic background with a lasting Iberian signature
    Revidatti, Maria Antonia; Gama, Luis Telo; Martin Burriel, Inmaculada; Gardyn, Oscar Cortes; Cappello Villada, Juan Sebastian; Carolino, Maria Ines; Canon, Francisco Javier; Ginja, Catarina; Sponenberg, D. Phillip; Vicente, Antonio P.; Zaragoza, Pilar; Delgado Bermejo, Juan Vicente; Martínez, Amparo (2021-05-20)
    American Criollo pigs are thought to descend mainly from those imported from the Iberian Peninsula starting in the late 15th century. Criollo pigs subsequently expanded throughout the Americas, adapting to very diverse environments, and possibly receiving influences from other origins. With the intensification of agriculture in the mid-20th century, cosmopolitan breeds largely replaced Criollo pigs, and the few remaining are mostly maintained by rural communities in marginal areas where they still play an important socio-economic and cultural role. In this study, we used 24 microsatellite markers in samples from 1715 pigs representing 46 breeds with worldwide distribution, including 17 American Criollo breeds, with the major focus of investigating their genetic diversity, structure and breed relationships. We also included representatives of the Iberian, Local British, Hungarian, Chinese and Commercial breeds, as well as Wild Boar, in order to investigate their possible influence in the genetic composition of Criollos. Our results show that, when compared with the other breeds, Criollo pigs present higher levels of genetic diversity, both in terms of allelic diversity and expected heterozygosity. The various analyses indicate that breed differentiation overall explains nearly 21% of the total genetic diversity. Criollo breeds showed their own identity and shared a common genetic background, tending to cluster together in various analyses, even though they differ from each other. A close relationship of Criollos with Iberian breeds was revealed by all the different analyses, and the contribution of Iberian breeds, particularly of the Celtic breeds, is still present in various Criollo breeds. No influence of Chinese breeds was detected on Criollos, but a few were influenced by Commercial breeds or by wild pigs. Our results confirm the uniqueness of American Criollo pigs and the role that Iberian breeds have played in their development.