Forest-obligate Sabethes mosquitoes suggest palaeoecological perturbations (2008)
- Authors:
- Autor USP: SALLUM, MARIA ANICE MUREB - FSP
- Unidade: FSP
- DOI: 10.1038/hdy.2008.45
- Subjects: PLEISTOCENO; FILOGENIA (DISTRIBUIÇÃO GEOGRÁFICA); MOSQUITOS; DNA MITOCONDRIAL; FLORESTAS
- Language: Inglês
- Abstract: The origin of tropical forest diversity has been hotly debated for decades. Although specific mechanisms vary, many such explanations propose some vicariance in the distribution of species during glacial cycles and several have been supported by genetic evidence in Neotropical taxa. However, no consensus exists with regard to the extent or time frame of the vicariance events. Here, we analyse the cytochrome oxidase II mitochondrial gene of 250 Sabethes albiprivus B mosquitoes sampled from western Sao Paulo in Brazil. There was very low population structuring among collection sites (?<sub>ST</sub>=0.03, P=0.04). Historic demographic analyses and the contemporary geographic distribution of genetic diversity suggest that the populations sampled are not at demographic equilibrium. Three distinct mitochondrial clades were observed in the samples, one of which differed significantly in its geographic distribution relative to the other two within a small sampling area (?70 × 35 km). This fact, supported by the inability of maximum likelihood analyses to achieve adequate fits to simple models for the population demography of the species, suggests a more complex history, possibly involving disjunct forest refugia. This hypothesis is supported by a genetic signal of recent population growth, which is expected if population sizes of this forest-obligate insect increased during the forest expansions that followed glacial periods. Although a time frame cannot be reliably inferredfor the vicariance event leading to the three genetic clades, molecular clock estimates place this at ?1 Myr before present
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ABNT
PEDRO, P. M e SALLUM, Maria Anice Mureb e BUTLIN, R. K. Forest-obligate Sabethes mosquitoes suggest palaeoecological perturbations. Heredity, v. 101, n. 2, p. 186-195, 2008Tradução . . Disponível em: https://doi.org/10.1038/hdy.2008.45. Acesso em: 18 set. 2024. -
APA
Pedro, P. M., Sallum, M. A. M., & Butlin, R. K. (2008). Forest-obligate Sabethes mosquitoes suggest palaeoecological perturbations. Heredity, 101( 2), 186-195. doi:10.1038/hdy.2008.45 -
NLM
Pedro PM, Sallum MAM, Butlin RK. Forest-obligate Sabethes mosquitoes suggest palaeoecological perturbations [Internet]. Heredity. 2008 ; 101( 2): 186-195.[citado 2024 set. 18 ] Available from: https://doi.org/10.1038/hdy.2008.45 -
Vancouver
Pedro PM, Sallum MAM, Butlin RK. Forest-obligate Sabethes mosquitoes suggest palaeoecological perturbations [Internet]. Heredity. 2008 ; 101( 2): 186-195.[citado 2024 set. 18 ] Available from: https://doi.org/10.1038/hdy.2008.45 - Memórias do Instituto Oswaldo Cruz
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Informações sobre o DOI: 10.1038/hdy.2008.45 (Fonte: oaDOI API)
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