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Home / Archives for Petrarca V

Remarkable diversity of intron-1 of the para voltage-gated sodium channel gene in an Anopheles gambiae/Anopheles coluzzii hybrid zone

  • Autores: Caputo B, Conway DJ, Della Torre A, Fanello C, Mancini E, Nwakanma DC, Petrarca V, Pinto J, Santolamazza F, Weetman D
  • Ano de Publicação: 2015
  • Journal: Malaria Journal
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/25604888

BACKGROUND: Genomic differentiation between Anopheles gambiae and Anopheles coluzzii–the major malaria vectors in sub-Saharan Africa–is localized into large “islands” toward the centromeres of chromosome-X and the two autosomes. Linkage disequilibrium between these genomic islands was first detected between species-specific polymorphisms within ribosomal DNA genes (IGS-rDNA) on the X-chromosome and a single variant at position 702 […]
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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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The last bastion? X chromosome genotyping of Anopheles gambiae species pair males from a hybrid zone reveals complex recombination within the major candidate ‘genomic island of speciation’

  • Autores: Caputo B, Della Torre A, Dinis J, Mancini E, Petrarca V, Pichler V, Pinto J, Pombi M, Rodrigues A, Steen K, Vicente JL, Weetman D
  • Ano de Publicação: 2016
  • Journal: Molecular Ecology
  • Link: http://onlinelibrary.wiley.com/doi/10.1111/mec.13840/pdf

Speciation with gene flow may be aided by reduced recombination helping to build linkage between genes involved in the early stages of reproductive isolation. Reduced recombination on chromosome X has been implicated in speciation within the Anopheles gambiae complex, species of which represent the major Afrotropical malaria vectors. The most recently diverged, morphologically indistinguishable, species […]
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Genetic isolation within the malaria mosquito Anopheles melas.

  • Autores: Athrey G, Caccone A, Costantini C, Deitz KC, Della Torre A, Jawara M, Kengne P, Kiszewski AE, Matias A, Overgaard HJ, Petrarca V, Pinto J, Reddy MR, Slotman MA
  • Journal: Molecular Ecology
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/22882458

Anopheles melas is a brackish water-breeding member of the Anopheles gambiae complex that is distributed along the coast of West Africa and is a major malaria vector within its range. Because little is known about the population structure of this species, we analysed 15 microsatellite markers and 1161 bp of mtDNA in 11 A.
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The “far-west” of Anopheles gambiae molecular forms.

  • Autores: Besansky NJ, Caputo B, Conway DJ, Della Torre A, Jaenson T, Jawara M, Mancini E, Nwakanma DC, Palsson K, Petrarca V, Santolamazza F, Vicente JL, White BJ
  • Journal: PLoS One
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=The+%E2%80%9Cfar-west%E2%80%9D+of+Anopheles+gambiae+molecular+forms

The main Afrotropical malaria vector, Anopheles gambiae sensu stricto, is undergoing a process of sympatric ecological diversification leading to at least two incipient species (the M and S molecular forms) showing heterogeneous levels of divergence across the genome.
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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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