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Home / Archives for Donnelly MJ

Limited genomic divergence between intraspecific forms of Culex pipiens under different ecological pressures

  • Autores: Gomes B, Wilding CS, Weetman D, Sousa CA, Novo MT, Savage H, Almeida APG, Pinto J, Donnelly MJ
  • Ano de Publicação: 2015
  • Journal: BMC Evolutionary Biology
  • Link: https://bmcevolbiol.biomedcentral.com/articles/10.1186/s12862-015-0477-z

Divergent selection can be a major driver of ecological speciation. In insects of medical importance, understanding the speciation process is both of academic interest and public health importance. In the West Nile virus vector Culex pipiens, intraspecific pipiens and molestus forms vary in ecological and physiological traits. Populations of each form appear to share recent common […]
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Massive introgression drives species radiation at the range limit of Anopheles gambiae

  • Autores: Antao T, Bottà G, Caputo B, Clarkson CS, Dinis J, Donnelly MJ, Drury E, Gomes B, Kwiatkowski DP, Mancini E, Mead D, Miles A, Petrarca V, Pinto J, Pombi M, Rodrigues A, Sousa CA, Stalker J, Torre AD, Vicente JL, Weetman D
  • Ano de Publicação: 2017
  • Journal: Scientific Reports
  • Link: https://www.nature.com/articles/srep46451

Impacts of introgressive hybridisation may range from genomic erosion and species collapse to rapid adaptation and speciation but opportunities to study these dynamics are rare. We investigated the extent, causes and consequences of a hybrid zone between Anopheles coluzzii and Anopheles gambiae in Guinea-Bissau, where high hybridisation rates appear to be stable at least since […]
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Gene flow-dependent genomic divergence between Anopheles gambiae M and S forms.

  • Autores: Donnelly MJ, Steen K, Weetman D, Wilding CS, Pinto J
  • Journal: Molecular Biology and Evolution
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=Gene+Flow-Dependent+Genomic+Divergence+between+Anopheles+gambiae+M+and+S+Forms.

Anopheles gambiae sensu stricto exists as two often-sympatric races termed the M and S molecular forms, characterized by fixed differences at an X-linked marker. Extreme divergence between M and S forms at pericentromeric “genomic islands” suggested that selection on variants therein could be driving interform divergence in the presence of ongoing gene flow, but recent work has detected much more widespread genomic differentiation.
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The Culex pipiens complex in continental Portugal: distribution and genetic structure.

  • Autores: Almeida AP, Donnelly MJ, Gomes B, Novo MT, Parreira R, Sousa CA, Pinto J
  • Journal: Journal of the American Mosquito Control Association
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=The+Culex+pipiens+complex+in+continental+Portugal%3A+Distribution+and+genetic+structure.

Portugal is a southern European country that displays favorable ecological conditions for the establishment of West Nile virus (WNV) transmission cycles. Competent mosquito vector species are present throughout the country.
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Field, genetic, and modeling approaches show strong positive selection acting upon an insecticide resistance mutation in Anopheles gambiae s.s

  • Autores: Barbosa S, Donnelly MJ, Egyir-Yawson A, Hastings I, Lynd A, Mitchell S, Weetman D, Pinto J
  • Journal: Molecular Biology and Evolution
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=Field%2C+genetic+and+modeling+approaches+show+strong+positive+selection+acting+upon+an+insecticide+resistance+mutation+in+Anopheles+gambiae+s.s

Alleles subject to strong, recent positive selection will be swept toward fixation together with contiguous sections of the genome. Whether the genomic signatures of such selection will be readily detectable in outbred wild populations is unclear. In this study, we employ haplotype diversity analysis to examine evidence for selective sweeps around knockdown resistance (kdr) mutations […]
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About GHTM

GHTM is a R&D Center that brings together researchers from IHMT with a track record in Tropical Medicine and International/Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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