Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/19973

Title: Genetic signature of the northward expansion of the Egyptian mongoose Herpestes ichneumon (Herpestidae) in the Iberian Peninsula
Authors: Barros, Tânia
Ferreira, Eduardo
Rocha, Rita
Gaubert, Philippe
Bandeira, Victor
Souto, Luis
Mira, António
Fonseca, Carlos
Keywords: carnivore
genetic structure
Iberia
isolation-by-barrier
isolation-by-distance
microsatellites
range expansion
Issue Date: 2016
Publisher: Biological Journal of the Linnean Society
Citation: Barros, T.; Ferreira, E.; Rocha, R.G.; Gaubert, P.; Bandeira, V.; Souto, L.; Mira, A.; Fonseca, C. 2016. Genetic signature of the northward expansion of the Egyptian mongoose Herpestes ichneumon (Herpestidae) in the Iberian Peninsula. Biological Journal of the Linnean Society, 118(3): 686-697.
Abstract: In the last three decades, the range of the Egyptian mongoose (Herpestes ichneumon) has increased in the Iberian Peninsula. A panel of microsatellites was used to confront the patterns of genetic diversity of the species with the scenario of its recent northward expansion in its Iberian range. Evidence of substructure and significant genetic differentiation within the studied population were recorded, with a central-northern subpopulation (CNorth) and a southern subpopulation (S). Northward range expansion was supported by the observed allelic frequencies, diversity parameters, and observed heterozygosity of the studied loci, with S showing a higher allelic diversity and a higher number of private alleles than CNorth. Patterns of isolation-by-distance and isolation-by-barrier as a result of the Tagus River were demonstrated, suggesting that the river acted as a semi-permeable barrier, possibly leading to genetic differentiation of the studied population. The observed individuals from CNorth in southern locations and individuals from S in central/northern areas might comprise evidence for long range dispersals across the studied range. A bottleneck event after population expansion was supported by a significant heterozygosity deficiency in CNorth, which is in agreement with a scenario of founder events occurring in recently colonized areas after the crossing of the Tagus River.
URI: http://hdl.handle.net/10174/19973
Type: article
Appears in Collections:ICAAM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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