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Home / Archives for Charlwood JD

‘We like it wet’: A comparison between dissection techniques for the assessment of parity in Anopheles arabiensis and determination of sac stage in mosquitoes alive or dead on collection

  • Authors: Charlwood JD, Tomas EVE, Andegiorgish AK, Mihreteab S, LeClair C
  • Publication Year: 2018
  • Journal: PeerJ
  • Link: https://www.ncbi.nlm.nih.gov/pubmed/30018854

BACKGROUND: The determination of parous rates in mosquitoes, despite numerous shortcomings, remains a tool to evaluate the effectiveness of control programs and to determine vectorial capacity in malaria vectors. Two dissection techniques are used for this. For one, the tracheoles of dried ovaries are examined with a compound microscope and in the other the follicular […]
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Some like it hot: A differential response to changing temperatures by the malaria vectors Anopheles funestus and An. gambiae s.l.

  • Authors: Charlwood JD
  • Publication Year: 2017
  • Journal: PeerJ
  • Link: https://peerj.com/articles/3099/%20

Background. With the possible implications of global warming, the effect of temperature on the dynamics of malaria vectors in Africa has become a subject of increasing interest. Information from the field is, however, relatively sparse. We describe the effect of ambient temperature over a five-year period on the dynamics of An. funestus and An. gambiae […]
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The Furvela tent-trap Mk 1.1 for the collection of outdoor biting mosquitoes

  • Authors: Charlwood JD, Clair CL, Protopopoff N, Rowland M
  • Publication Year: 2017
  • Journal: PeerJ
  • Link: https://peerj.com/articles/3848/%20

Outdoor transmission of malaria and other vector borne diseases remains a problem. The WHO has recently recognized the need for suitable methods for assessing vector density outdoors and a number of tent-traps have been developed. Only one such trap, the Furvela tent-trap, does not require an ‘entry’ behavior on the part of the mosquito. It […]
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Molecular evolution and population genetics of a Gram-negative binding protein gene in the malaria vector Anopheles gambiae (sensu lato)

  • Authors: Arez AP, Charlwood JD, Lopes AS, Mendes C, Pinto J, Salgueiro P, Silveira H
  • Publication Year: 2016
  • Journal: Parasites & Vectors
  • Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5034674/

Background Clarifying the role of the innate immune system of the malaria vector Anopheles gambiae is a potential way to block the development of the Plasmodium parasites. Pathogen recognition is the first step of innate immune response, where pattern recognition proteins like GNBPs play a central role. Results We analysed 70 sequences of the protein coding gene GNBPB2 from two species, Anopheles […]
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Studies on the behaviour of peridomestic and endophagic M form Anopheles gambiae from a rice growing area of Ghana.

  • Authors: Charlwood JD, Egyir-Yawson A, Pitts RJ, Salgueiro P, Tomás EV, Pinto J
  • Journal: Bulletin of Entomological Research
  • Link: http://www.ncbi.nlm.nih.gov/pubmed/?term=Studies+on+the+behaviour+of+peridomestic+and+endophagic+M+form+Anopheles+gambiae+from+a+rice+growing+area+of+Ghana

The ‘paddy paradox’, the occurrence of large populations of vectors but low amounts of malaria transmission where irrigated rice is grown, was investigated in a village in Ghana where M form Anopheles gambiae are common.
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About GHTM

GHTM is a R&D Unit that brings together researchers 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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