The Wool-Less Canary Sheep and their relationship with the present breeds in America

Delgado, J. V.; Pérezgrovas, R.; Camacho, M. E.; Fresno, M.; Barba, C.

doi:10.1017/s1014233900001334

Cited by 15 publications

(15 citation statements)

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“…Anecdotally, these are assumed to have been derived from African hair breeds; however, the presence of H5 strongly suggests that the paternal origin of both breeds is European and not African. This is consistent with colonialist migration in the 17th century, where European animals were introduced into existing hair sheep populations across the Caribbean (Delgado et al. 2000).…”

Section: Discussionsupporting

confidence: 82%

Globally dispersed Y chromosomal haplotypes in wild and domestic sheep

et al. 2006

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To date, investigations of genetic diversity and the origins of domestication in sheep have utilised autosomal microsatellites and variation in the mitochondrial genome. We present the first analysis of both domestic and wild sheep using genetic markers residing on the ovine Y chromosome. Analysis of a single nucleotide polymorphism (oY1) in the SRY promoter region revealed that allele A-oY1 was present in all wild bighorn sheep (Ovis canadensis), two subspecies of thinhorn sheep (Ovis dalli), European Mouflon (Ovis musimon) and the Barbary (Ammontragis lervia). A-oY1 also had the highest frequency (71.4%) within 458 domestic sheep drawn from 65 breeds sampled from Africa, Asia, Australia, the Caribbean, Europe, the Middle East and Central Asia. Sequence analysis of a second locus, microsatellite SRYM18, revealed a compound repeat array displaying fixed differences, which identified bighorn and thinhorn sheep as distinct from the European Mouflon and domestic animals. Combined genotypic data identified 11 male-specific haplotypes that represented at least two separate lineages. Investigation of the geographical distribution of each haplotype revealed that one (H6) was both very common and widespread in the global sample of domestic breeds. The remaining haplotypes each displayed more restricted and informative distributions. For example, H5 was likely founded following the domestication of European breeds and was used to trace the recent transportation of animals to both the Caribbean and Australia. A high rate of Y chromosomal dispersal appears to have taken place during the development of domestic sheep as only 12.9% of the total observed variation was partitioned between major geographical regions.

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Section: Discussionsupporting

confidence: 82%

Globally dispersed Y chromosomal haplotypes in wild and domestic sheep

et al. 2006

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“…This Pelibuey sheep, in turn, may have a Canarian origin because this Atlantic archipelago was an obliged port-of-call for the ships in route to the New World during the 15 th century and onwards11. Hair sheep are the most widespread race in Africa because of their excellent adaptation to the highly humid tropical forest12.…”

Section: Resultsmentioning

confidence: 99%

“…There are reports that indicate that Canaria de Pelo, the only hair sheep breed in Spain, became extinct in the Canary islands during the 16–17 th centuries and that current populations descend from Pelibuey sheep brought from Venezuela 11 . This Pelibuey sheep, in turn, may have a Canarian origin because this Atlantic archipelago was an obliged port-of-call for the ships in route to the New World during the 15 th century and onwards 11 . Hair sheep are the most widespread race in Africa because of their excellent adaptation to the highly humid tropical forest 12 .…”

Section: Resultsmentioning

confidence: 99%

Population structure of eleven Spanish ovine breeds and detection of selective sweeps with BayeScan and hapFLK

Manunza

Cardoso

Noce

et al. 2016

Sci Rep

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The goals of the current work were to analyse the population structure of 11 Spanish ovine breeds and to detect genomic regions that may have been targeted by selection. A total of 141 individuals were genotyped with the Infinium 50 K Ovine SNP BeadChip (Illumina). We combined this dataset with Spanish ovine data previously reported by the International Sheep Genomics Consortium (N = 229). Multidimensional scaling and Admixture analyses revealed that Canaria de Pelo and, to a lesser extent, Roja Mallorquina, Latxa and Churra are clearly differentiated populations, while the remaining seven breeds (Ojalada, Castellana, Gallega, Xisqueta, Ripollesa, Rasa Aragonesa and Segureña) share a similar genetic background. Performance of a genome scan with BayeScan and hapFLK allowed us identifying three genomic regions that are consistently detected with both methods i.e. Oar3 (150–154 Mb), Oar6 (4–49 Mb) and Oar13 (68–74 Mb). Neighbor-joining trees based on polymorphisms mapping to these three selective sweeps did not show a clustering of breeds according to their predominant productive specialization (except the local tree based on Oar13 SNPs). Such cryptic signatures of selection have been also found in the bovine genome, posing a considerable challenge to understand the biological consequences of artificial selection.

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“…On the other hand, their proximity to the Atlantic coast would provide the opportunity for animals arriving in ships from other continents to be incorporated into the local gene pool. Particularly, it is known that in the journey between Portugal and Brazil, ships usually stopped in the Cape Verde islands for re-supplying, and animals were loaded there for the final stretch of the voyage, thus avoiding the occupation of essential space with animals, feed and water in the first part of the journey (Delgado et al 2000). This could result in a possible African influence on Brazilian goats, as it is likely that Cape Verde goats were originally brought from Africa with the first settlers in the 15th century.…”

Section: Discussionmentioning

confidence: 99%

Drift across the Atlantic: genetic differentiation and population structure in Brazilian and Portuguese native goat breeds

Ribeiro

Sousa

Martínez-Martínez

et al. 2011

J Animal Breeding Genetics

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Brazilian goat breeds are believed to derive mainly from animals brought by Portuguese settlers since the 16th century. We used microsatellite markers in a sample of 436 animals to study genetic variability and differentiation of the six Portuguese (PT) and six Brazilian (BR) goat breeds currently recognized in the two countries. These breeds were also compared with an outgroup represented by a sample of Alpine (ALP) goats. The effective number of alleles and allelic richness were slightly higher in PT than in BR breeds. The global F(ST) was nearly 0.11 when PT and BR breeds were considered, with a mean pairwise F(ST) of about 0.03 among PT breeds, 0.07 among BR breeds and 0.15 between PT and BR breeds. The dendrogram illustrating relationships between populations and the correspondence analysis indicate the existence of two very distinct clusters, corresponding to the countries of origin of the breeds studied, which are nearly equidistant from the Alpine outgroup. The analysis with structure confirmed the separation between PT and BR breeds but suggests that some BR breeds, especially Graúna and Canindé, may share a common ancestry with PT breeds. The divergence observed between PT and BR breeds may result from founder effects and genetic drift but could also reflect the introduction in Brazil of goats originating from other regions, e.g., West Africa.

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The Wool-Less Canary Sheep and their relationship with the present breeds in America

Abstract: España profundamente en referencias históricas y en investigaciones recientes.

Cited by 15 publications

References 1 publication

Globally dispersed Y chromosomal haplotypes in wild and domestic sheep

Globally dispersed Y chromosomal haplotypes in wild and domestic sheep

Population structure of eleven Spanish ovine breeds and detection of selective sweeps with BayeScan and hapFLK

Drift across the Atlantic: genetic differentiation and population structure in Brazilian and Portuguese native goat breeds

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