The maternal aborigine colonization of La Palma (Canary Islands)

Fregel, Rosa; Pestano, J.; Arnay, Matilde; Cabrera, Vicente M.; Larruga, J. M.; González, Ana M.

doi:10.1038/ejhg.2009.46

Cited by 44 publications

(58 citation statements)

References 33 publications

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“…We anticipated the existence of gene flow between the Canary Islands and Northwest Africa because this archipelago was settled by Imazighen peoples around 3,000 YBP, as supported by several lines of archaeological, linguistic and genetic evidence24, and current Canarian goat populations are thought to descend from the ones brought by the first settlers of the archipelago25. We also found significant bidirectional gene flow between Egypt and Northwest Africa (Table 1).…”

Section: Discussionmentioning

confidence: 55%

Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach

Martínez

Manunza

Delgado

et al. 2016

Sci Rep

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Human-driven migrations are one of the main processes shaping the genetic diversity and population structure of domestic species. However, their magnitude and direction have been rarely analysed in a statistical framework. We aimed to estimate the impact of migration on the population structure of Spanish and African goats. To achieve this goal, we analysed a dataset of 1,472 individuals typed with 23 microsatellites. Population structure of African and Spanish goats was moderate (mean FST = 0.07), with the exception of the Canarian and South African breeds that displayed a significant differentiation when compared to goats from North Africa and Nigeria. Measurement of gene flow with Migrate-n and IMa coalescent genealogy samplers supported the existence of a bidirectional gene flow between African and Spanish goats. Moreover, IMa estimates of the effective number of migrants were remarkably lower than those calculated with Migrate-n and classical approaches. Such discrepancies suggest that recent divergence, rather than extensive gene flow, is the main cause of the weak population structure observed in caprine breeds.

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Section: Discussionmentioning

confidence: 55%

Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach

Martínez

Manunza

Delgado

et al. 2016

Sci Rep

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“…As previously observed, the indigenous populations of the Canary Islands in the past were not homogenous (Table 1; Figure 3). The islands of La Palma and Tenerife show a relatively diverse mtDNA composition (>70%) [33,36,37], while the others show signs of genetic drift and/or diversity reduction events, such as a bottleneck or a founder effect. In La Gomera, mtDNA diversity was 54.2%, due to the high frequency of haplogroup U6b1a [38], while in El Hierro, this value was 2.9%, with the almost complete fixation of H1cf haplogroup in the Punta Azul site [39].…”

Section: Resultsmentioning

confidence: 99%

Mitogenomes illuminate the origin and migration patterns of the indigenous people of the Canary Islands

Fregel

Ordóñez

Cabrera

et al. 2018

Preprint

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The Canary Islands’ indigenous people have been the subject of substantial archaeological, anthropological, linguistic and genetic research pointing to a most probable North African Berber source. However, neither agreement about the exact point of origin nor a model for the indigenous colonization of the islands has been established. To shed light on these questions, we analyzed 48 ancient mitogenomes from 25 archaeological sites from the seven main islands. Most lineages observed in the ancient samples have a Mediterranean distribution, and belong to lineages associated with the Neolithic expansion in the Near East and Europe (T2c, J2a, X3a…). This phylogeographic analysis of Canarian indigenous mitogenomes, the first of its kind, shows that some lineages are restricted to Central North Africa (H1cf, J2a2d and T2c1d3), while others have a wider distribution, including both West and Central North Africa, and, in some cases, Europe and the Near East (U6a1a1, U6a7a1, U6b, X3a, U6c1). In addition, we identify four new Canarian-specific lineages (H1e1a9, H4a1e, J2a2d1a and L3b1a12) whose coalescence dates correlate with the estimated time for the colonization of the islands (1st millennia CE). Additionally, we observe an asymmetrical distribution of mtDNA haplogroups in the ancient population, with certain haplogroups appearing more frequently in the islands closer to the continent. This reinforces results based on modern mtDNA and Y-chromosome data, and archaeological evidence suggesting the existence of two distinct migrations. Comparisons between insular populations show that some populations had high genetic diversity, while others were probably affected by genetic drift and/or bottlenecks. In spite of observing interinsular differences in the survival of indigenous lineages, modern populations, with the sole exception of La Gomera, are homogenous across the islands, supporting the theory of extensive human mobility after the European conquest.

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“…Regarding the Canarian archipelago, archaeological and linguistic records indicate that it was populated by Imazighen people around 2500 YBP (Fregel et al . ). Our findings are consistent with an initial settlement of the islands nearest to the African coast (Fuerteventura and Lanzarote).…”

Section: Nucleotide and Haplotype Diversity Parameters And Tajima's Dmentioning

confidence: 97%

A mitochondrial analysis reveals distinct founder effect signatures in Canarian and Balearic goats

et al. 2015

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In the course of human migrations, domestic animals often have been translocated to islands with the aim of assuring food availability. These founder events are expected to leave a genetic footprint that may be recognised nowadays. Herewith, we have examined the mitochondrial diversity of goat populations living in the Canarian and Balearic archipelagos. Median-joining network analysis produced very distinct network topologies for these two populations. Indeed, a majority of Canarian goats shared a single ancestral haplotype that segregated in all sampled islands, suggesting a single founder effect followed by a stepping-stone pattern of diffusion. This haplotype also was present in samples collected from archaeological assemblies at Gran Canaria and Lanzarote, making evident its widespread distribution in ancient times. In stark contrast, goats from Majorca and Ibiza did not share any mitochondrial haplotypes, indicating the occurrence of two independent founder events. Furthermore, in Majorcan goats, we detected the segregation of the mitochondrial G haplogroup that has only been identified in goats from Egypt, Iran and Turkey. This finding suggests the translocation of Asian and/or African goats to Majorca, possibly as a consequence of the Phoenician and Carthaginian colonisations of this island.

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The maternal aborigine colonization of La Palma (Canary Islands)

Cited by 44 publications

References 33 publications

Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach

Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach

Mitogenomes illuminate the origin and migration patterns of the indigenous people of the Canary Islands

A mitochondrial analysis reveals distinct founder effect signatures in Canarian and Balearic goats

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