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anopheles coluzzii

Infection of highly insecticide-resistant malaria vector Anopheles coluzzii with entomopathogenic bacteria Chromobacterium violaceum reduces its survival, blood feeding propensity and fecundity

October 6, 2020 - 12:45 -- Open Access
Author(s): 
Edounou Jacques Gnambani, Etienne Bilgo, Adama Sanou, Roch K. Dabiré and Abdoulaye Diabaté
Reference: 
Malaria Journal 2020 19:352, 2 October 2020

This is now a concern that malaria eradication will not be achieved without the introduction of novel control tools. Microbiological control might be able to make a greater contribution to vector control in the future. The interactions between bacteria and mosquito make mosquito microbiota really promising from a disease control perspective. Here, the impact of Chromobacterium violaceum infections, isolated from both larvae and adult of wild-caught Anopheles gambiae sensu lato mosquitoes in Burkina Faso, was evaluated on mosquito survival, blood feeding and fecundity.

NOT Open Access | Gene editing reveals obligate and modulatory components of the CO(2) receptor complex in the malaria vector mosquito, Anopheles coluzzii

September 24, 2020 - 08:17 -- NOT Open Access
Author(s): 
Liu F, Ye Z, Baker A, Sun H, Zwiebel LJ
Reference: 
Insect Biochem Mol Biol. 2020 Sep 20:103470

The sensitivity to volatile carbon dioxide (CO2) produced by humans and other animals is a critical component in the host preference behaviors of the malaria vector mosquito Anopheles coluzzii. The molecular receptors responsible for the ability to sense CO2 are encoded by three putative gustatory receptor (Gr) genes (Gr22,23,24) which are expressed in a distinctive array of sensory neurons housed in maxillary palp capitate peg sensilla of An. coluzzii.

Antibiotic Treatment in Anopheles coluzzii Affects Carbon and Nitrogen Metabolism

August 25, 2020 - 08:16 -- Open Access
Author(s): 
Chabanol E, Behrends V, Prévot G, Christophides GK, Gendrin M
Reference: 
Pathogens. 2020 Aug 21;9(9):E679

The mosquito microbiota reduces the vector competence of Anopheles to Plasmodium and affects host fitness; it is therefore considered as a potential target to reduce malaria transmission. While immune induction, secretion of antimicrobials and metabolic competition are three typical mechanisms of microbiota-mediated protection against invasive pathogens in mammals, the involvement of metabolic competition or mutualism in mosquito-microbiota and microbiota-Plasmodium interactions has not been investigated.

The Anopheles coluzzii microbiome and its interaction with the intracellular parasite Wolbachia

August 18, 2020 - 14:53 -- Open Access
Author(s): 
Straub TJ, Shaw WR, Marcenac P, Sawadogo SP, Dabiré RK, Diabaté A, Catteruccia F, Neafsey DE
Reference: 
Sci Rep. 2020 Aug 14;10(1):13847

Wolbachia, an endosymbiotic alpha-proteobacterium commonly found in insects, can inhibit the transmission of human pathogens by mosquitoes. Biocontrol programs are underway using Aedes aegypti mosquitoes trans-infected with a non-natural Wolbachia strain to reduce dengue virus transmission. Less is known about the impact of Wolbachia on the biology and vectorial capacity of Anopheles mosquitoes, the vectors of malaria parasites.

Behavioural plasticity of Anopheles coluzzii and Anopheles arabiensis undermines LLIN community protective effect in a Sudanese-savannah village in Burkina Faso

June 3, 2020 - 15:33 -- Open Access
Author(s): 
Perugini E, Guelbeogo WM, Calzetta M, Manzi S, Virgillito C, Caputo B, Pichler V, Ranson H, Sagnon N, Della Torre A, Pombi M
Reference: 
Parasit Vectors. 2020 Jun 1; 13(1):277

Despite the overall major impact of long-lasting insecticide treated nets (LLINs) in eliciting individual and collective protection to malaria infections, some sub-Saharan countries, including Burkina Faso, still carry a disproportionately high share of the global malaria burden. This study aims to analyse the possible entomological bases of LLIN limited impact, focusing on a LLIN-protected village in the Plateau Central region of Burkina Faso.

Comparison of swarming, mating performance and longevity of males Anopheles coluzzii between individuals fed with different natural fruit juices in laboratory and semi-field conditions

May 6, 2020 - 16:11 -- Open Access
Author(s): 
Charles Nignan, Abdoulaye Niang, Abdoulaye Diabaté, et al.
Reference: 
Malaria Journal 2020 19:173, 6 May 2020

It is assumed that malaria vectors feed on locally available nectar sources to obtain energy. Sugar feeding is energetically critical for the Anopheles male swarming and mating activities. However, little is known about the impact of local nectar feeding on male physiological development and its consequences on male mosquito life traits in the malaria control context. This study aimed to evaluate the influence of local fruit juices on the life traits of males Anopheles coluzzii.

Species and sex-specific chemosensory gene expression in Anopheles coluzzii and An. quadriannulatus antennae

April 27, 2020 - 12:43 -- Open Access
Author(s): 
Athrey G, Popkin-Hall Z, Cosme LV, Takken W, Slotman MA
Reference: 
Parasit Vectors. 2020 Apr 22;13(1):212

Olfactory cues drive mosquito behaviors such as host-seeking, locating sugar sources and oviposition. These behaviors can vary between sexes and closely related species. For example, the malaria vector Anopheles coluzzii is highly anthropophilic, whereas An. quadriannulatus is not. These behavioral differences may be reflected in chemosensory gene expression.

A preliminary analysis on the effect of copper on Anopheles coluzzii insecticide resistance in vegetable farms in Benin

April 15, 2020 - 14:23 -- Open Access
Author(s): 
Talom AD, Essoung MA, Gbankoto A, Tchigossou G, Akoton R, Sahabi BBA, Atoyebi SM, Fotso Kuate A, Verspoor RL, Tamò M, Tchuinkam T, Lehman GL, Lines J, Wondji CS, Djouaka R
Reference: 
Sci Rep. 2020 Apr 14;10(1):6392

The use of agrochemicals in vegetable production could influence the selection for insecticide resistance in malaria vectors. Unfortunately, there is a dearth of information on the potential contribution of agrochemicals to insecticide resistance in Anopheles mosquitoes breeding on vegetable farms in southern Benin.

Effects of indoor residual spraying and outdoor larval control on Anopheles coluzzii from São Tomé and Príncipe, two islands with pre-eliminated malaria

December 10, 2019 - 09:03 -- Open Access
Author(s): 
Chen YA, Lien JC, Tseng LF, Cheng CF, Lin WY, Wang HY, Tsai KH
Reference: 
Malaria Journal, Volume 18, 405 (Dec 5, 2019)

Vector control is a key component of malaria prevention. Two major vector control strategies have been implemented in São Tomé and Príncipe (STP), indoor residual spraying (IRS) and outdoor larval control using Bacillus thuringiensis israelensis (Bti). This study evaluated post-intervention effects of control strategies on vector population density, composition, and knockdown resistance mutation, and their implications for malaria epidemiology in STP.

Microbiota-induced peritrophic matrix regulates midgut homeostasis and prevents systemic infection of malaria vector mosquitoes

May 25, 2017 - 14:42 -- Open Access
Author(s): 
Faye H. Rodgers, Mathilde Gendrin, Claudia A. S. Wyer, George K. Christophides
Reference: 
PLoS Pathog 13(5): e1006391

Manipulation of the mosquito gut microbiota can lay the foundations for novel methods for disease transmission control.

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