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Article

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Accepted version

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2011

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/27504

Molecular evidence to suggest the origin of a colonization: Drosophila subobscura in America

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http://dx.doi.org/10.1007/s10709-012-9647-8

Abstract

Abstract The recent colonization of America by Drosophila subobscura represents a great opportunity for evolutionary biology studies. Knowledge of the populations from which the colonization started would provide an understanding of how genetic composition changed during adaptation to the new environment. Thus, a 793 nucleotide fragment of the Odh (Octanol dehydrogenase) gene was sequenced in 66 chromosomal lines from Barcelona (western Mediterranean) and in 66 from Mt. Parnes (Greece, eastern Mediterranean). No sequence of Odh fragment in Barcelona or Mt. Parnes was identical to any of those previously detected in America. However, an Odh sequence from Barcelona differed in only one nucleotide from another found in American populations. In both cases, the chromosomal lines presented the same inversion: O7, and the Odh gene was located within this inversion. This evidence suggests a possible western Mediterranean origin for the colonization. Finally, the molecular and inversion data indicate that the colonization was not characterized by multiple reintroductions.

Subject

Drosòfila subobscura, Genètica animal, Genètica de poblacions, Cromosomes

Subject (English)

Drosophila subobscura, Animal genetics, Population Genetics, Chromosomes

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Articles publicats en revistes (Genètica, Microbiologia i Estadística)

Citation

ARGÓN ARAÚZ LEONES, Pedro, et al. Molecular evidence to suggest the origin of a colonization: Drosophila subobscura in America. Genetica. 2011. Vol. 139, num. 11-12, pags. 1477-1486. ISSN 0016-6707. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/27504

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