Mostrar el registro sencillo del ítem

dc.contributor.author
Mirol, Patricia Monica  
dc.contributor.author
Routtu, Jarkko  
dc.contributor.author
Hoikkala, Anneli  
dc.contributor.author
Butlin, Roger K.  
dc.date.available
2020-09-24T20:15:28Z  
dc.date.issued
2008-12  
dc.identifier.citation
Mirol, Patricia Monica; Routtu, Jarkko; Hoikkala, Anneli; Butlin, Roger K.; Signals of demographic expansion in Drosophila virilis; BioMed Central; BMC Evolutionary Biology; 8; 1; 12-2008; 1-8  
dc.identifier.issn
1471-2148  
dc.identifier.uri
http://hdl.handle.net/11336/114782  
dc.description.abstract
Background. The pattern of genetic variation within and among populations of a species is strongly affected by its phylogeographic history. Analyses based on putatively neutral markers provide data from which past events, such as population expansions and colonizations, can be inferred. Drosophila virilis is a cosmopolitan species belonging to the virilis group, where divergence times between different phylads go back to the early Miocene. We analysed mitochondrial DNA sequence variation among 35 Drosophila virilis strains covering the species' range in order to detect demographic events that could be used to understand the present characteristics of the species, as well as its differences from other members of the group. Results. Drosophila virilis showed very low nucleotide diversity with haplotypes distributed in a star-like network, consistent with a recent world-wide exponential expansion possibly associated either with domestication or post-glacial colonization. All analyses point towards a rapid population expansion. Coalescence models support this interpretation. The central haplotype in the network, which could be interpreted as ancestral, is widely distributed and gives no information about the geographical origin of the population expansion. The species showed no geographic structure in the distribution of mitochondrial haplotypes, in contrast to results of a recent microsatellite-based analysis. Conclusion. The lack of geographic structure and the star-like topology depicted by the D. virilis haplotypes indicate a pattern of global demographic expansion, probably related to human movements, although this interpretation cannot be distinguished from a selective sweep in the mitochondrial DNA until nuclear sequence data become available. The particular behavioural traits of this species, including weak species-discrimination and intraspecific mate choice exercised by the females, can be understood from this perspective.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
BioMed Central  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
Drosophila virilis  
dc.subject
Demographic expansion  
dc.subject.classification
Genética y Herencia  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Signals of demographic expansion in Drosophila virilis  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-07-20T18:18:28Z  
dc.journal.volume
8  
dc.journal.number
1  
dc.journal.pagination
1-8  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Mirol, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. University Of Leeds.; Reino Unido  
dc.description.fil
Fil: Routtu, Jarkko. Universidad de Jyvaskyla; Finlandia  
dc.description.fil
Fil: Hoikkala, Anneli. Universidad de Jyvaskyla; Finlandia  
dc.description.fil
Fil: Butlin, Roger K.. The University of Sheffield; Reino Unido  
dc.journal.title
BMC Evolutionary Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1186/1471-2148-8-59  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2276204/  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-8-59