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Second generation effects of larval metal pollutant exposure on reproduction, longevity and insecticide tolerance in the major malaria vector Anopheles arabiensis (Diptera: Culicidae)

January 14, 2020 - 12:07 -- Open Access
Author(s): 
Jeanrenaud ACSN, Brooke BD, Oliver SV
Reference: 
Parasites & Vectors, 2020 Jan 7; 13(1):4

Members of the Anopheles gambiae complex breed in clean, sunlit temporary bodies of water. Anthropogenic pollution is, however, altering the breeding sites of the vectors with numerous biological effects. Although the effects of larval metal pollution have previously been examined, this study aims to assess the transgenerational effects of larval metal pollution on the major malaria vector An. arabiensis.

The development and evaluation of a self-marking unit to estimate malaria vector survival and dispersal distance

December 30, 2019 - 15:00 -- Open Access
Author(s): 
Adam Saddler, Katharina S. Kreppel, Nakul Chitnis, Thomas A. Smith, Adrian Denz, Jason D. Moore, Mgeni M. Tambwe and Sarah J. Moore
Reference: 
Malaria Journal 2019 18:441, 23 December 2019

A clear understanding of mosquito biology is fundamental to the control efforts of mosquito-borne diseases such as malaria. Mosquito mark-release-recapture (MMRR) experiments are a popular method of measuring the survival and dispersal of disease vectors; however, examples with African malaria vectors are limited. Ethical and technical difficulties involved in carrying out MMRR studies may have held back research in this area and, therefore, a device that marks mosquitoes as they emerge from breeding sites was developed and evaluated to overcome the problems of MMRR.

Functional genetic validation of key genes conferring insecticide resistance in the major African malaria vector, Anopheles gambiae

December 10, 2019 - 11:11 -- Open Access
Author(s): 
Adolfi A, Poulton B, Anthousi A, Macilwee S, Ranson H, Lycett GJ
Reference: 
Proc Natl Acad Sci U S A. 2019 Dec 4. pii: 201914633

Resistance in Anopheles gambiae to members of all 4 major classes (pyrethroids, carbamates, organochlorines, and organophosphates) of public health insecticides limits effective control of malaria transmission in Africa. Increase in expression of detoxifying enzymes has been associated with insecticide resistance, but their direct functional validation in An. gambiae is still lacking.

Analysis of esterase enzyme activity in adults of the major malaria vector Anopheles funestus

March 3, 2016 - 16:15 -- Open Access
Author(s): 
Dahan-Moss Y, Koekemoer L
Reference: 
Parasites & Vectors 2016, 9 :110 (27 February 2016)

The aim of this study was to analyse esterase activity levels at different ages during the life-span of adult Anopheles funestus Giles in order to better understand the complex biological processes in this species.

Novel mutations on the ace-1 gene of the malaria vector Anopheles albimanus provide evidence for balancing selection in an area of high insecticide resistance in Peru

March 10, 2015 - 13:26 -- Open Access
Author(s): 
Kelly A Liebman, Jesus Pinto, Jorge Valle, Miriam Palomino, Lucrecia Vizcaino, William Brogdon, Audrey Lenhart
Reference: 
Malaria Journal 2015, 14:74 (14 February 2015)

A single point mutation on the ace-1 gene (G119S) associated with resistance to OPs and CAs has been described previously in four anopheline species, but not in field-collected An. albimanus. The present study aimed to characterize the role of ace-1 in conferring resistance to both OPs and CAs in the An. albimanus population in Tumbes, Peru.

Altitudinal population structure and microevolution of the malaria vector Anopheles cruzii

December 17, 2014 - 17:04 -- Open Access
Author(s): 
Camila Lorenz, Tatiani C Marques, Maria AM Sallum, Lincoln Suesdek
Reference: 
Parasites & Vectors 2014, 7:581 (16 December 2014)

We explored the homogeneity of the An. cruzii population across its altitudinal range of distribution using wing shape and mtDNA gene analysis. We also assessed the stability of wing geometry over time.

NOT Open Access | Polymorphic chromosomal inversions in Anopheles moucheti, a major malaria vector in Central Africa

August 13, 2014 - 10:04 -- NOT Open Access
Author(s): 
M. V. Sharakhova, C. Aantonio-Nkondjio, A. Xia, C. Ndo, P. Awono-Ambene, F. Simard and I. V. Sharakhov
Reference: 
Medical and Veterinary Entomology, Volume 28, Issue 3, pages 337–340, September 2014

Anopheles moucheti Evans (Diptera: Culicidae) is a major vector of malaria in forested areas of Central Africa.

Country: 

ABC transporters are involved in defense against permethrin insecticide in the malaria vector Anopheles stephensi

August 11, 2014 - 17:52 -- Open Access
Author(s): 
Epis S, Porretta D, Urbanelli S, et al.
Reference: 
Parasites & Vectors 2014, 7 :349 (29 July 2014)

Our results show for the first time the involvement of ABC transporters in larval defense against permethrin in An. stephensi and, more in general, confirm the role of ABC transporters in insecticide defense.

Toxicity of six plant extracts and two pyridone alkaloids from Ricinus communis against the malaria vector Anopheles gambiae

July 22, 2014 - 19:00 -- Open Access
Author(s): 
Sabina Wangui Wachira, Sabar Omar, Julia Wanjiru Jacob, Martin Wahome, Hans T Alborn, David R Spring, Daniel K Masiga and Baldwyn Torto
Reference: 
Parasites & Vectors 2014, 7:312

This study determined the toxicity and larvicidal activity on this vector of extracts from six selected plants found in Kenya and two compounds identified from Ricinus communis: 3-carbonitrile-4-methoxy-N-methyl-2-pyridone (ricinine), and its carboxylic acid derivative 3-carboxy-4-methoxy-N-methyl-2-pyridone, the latter compound being reported for the first time from this plant.

Water vapour is a pre-oviposition attractant for the malaria vector Anopheles gambiae sensu stricto

October 15, 2013 - 15:12 -- Open Access
Author(s): 
Okal MN, Francis B, Herrera-Varela M, Fillinger U, Lindsay SW
Reference: 
Malaria Journal 2013, 12 :365 (11 October 2013)
MalariaWorld

This study aimed to investigate the role of relative humidity or water vapour as a general cue for inducing gravid An. gambiaesensustricto to make orientated movements towards the source.

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