Population Genetic Structure of<i>Anopheles Arabiensis</i>(Diptera: Culicidae) in a Rice Growing Area of Central Kenya

Muturi, Ephantus J.; Kim, Chang‐Hyun; Baliraine, Frederick N.; Musani, Solomon K.; Jacob, Benjamin; Githure, John I.; Novak, Robert J.

doi:10.1093/jmedent/47.2.144

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…Anopheles arabiensis is the dominant vector of malaria in Mwea, and the only sibling species of the An. gambiae species complex recorded in the area [ 38 , 39 ]. Culex quinquefasciatus is the most abundant species of Culex in the area [ 40 ].…”

Section: Methodsmentioning

confidence: 99%

Agricultural chemicals: life changer for mosquito vectors in agricultural landscapes?

et al. 2016

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BackgroundAlthough many mosquito species develop within agricultural landscapes where they are potentially exposed to agricultural chemicals (fertilizers and pesticides), the effects of these chemicals on mosquito biology remain poorly understood. This study investigated the effects of sublethal concentrations of four agricultural chemicals on the life history traits of Anopheles arabiensis and Culex quinquefasciatus mosquitoes.MethodsField and laboratory experiments were conducted to examine how sublethal concentrations of four agricultural chemicals: an insecticide (cypermethrin), a herbicide (glyphosate), and two nitrogenous fertilizers (ammonium sulfate and diammonium phosphate) alter oviposition site selection, emergence rates, development time, adult body size, and longevity of An. arabiensis and Cx. quinquefasciatus.ResultsBoth mosquito species had preference to oviposit in fertilizer treatments relative to pesticide treatments. Emergence rates for An. arabiensis were significantly higher in the control and ammonium sulfate treatments compared to cypermethrin treatment, while emergence rates for Cx. quinquefasciatus were significantly higher in the diammonium phosphate treatment compared to glyphosate and cypermethrin treatments. For both mosquito species, individuals from the ammonium sulfate and diammonium phosphate treatments took significantly longer time to develop compared to those from cypermethrin and glyphosate treatments. Although not always significant, males and females of both mosquito species tended to be smaller in the ammonium sulfate and diammonium phosphate treatments compared to cypermethrin and glyphosate treatments. There was no significant effect of the agrochemical treatments on the longevity of either mosquito species.ConclusionsThese results demonstrate that the widespread use of agricultural chemicals to enhance crop production can have unexpected effects on the spatial distribution and abundance of mosquito vectors of malaria and lymphatic filariasis.

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Section: Methodsmentioning

confidence: 99%

Agricultural chemicals: life changer for mosquito vectors in agricultural landscapes?

et al. 2016

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“…For these reasons, population genetic structures of Anopheles mosquitoes, many species of which are vectors of malaria, have been extensively studied, e.g. Anopheles arabiensis [ 6 , 7 ], Anopheles baimaii [ 8 ], Anopheles culicifacies [ 9 ], Anopheles dirus [ 3 , 10 , 11 ], Anopheles funestus [ 12 ], Anopheles gambiae [ 13 , 14 ], Anopheles maculatus [ 15 ], Anopheles minimus [ 16 ], Anopheles sinensis [ 17 – 19 ] and Anopheles stephensi [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and population structure of malaria vector mosquitoes Anopheles subpictus, Anopheles peditaeniatus, and Anopheles vagus in five districts of Sri Lanka

Weeraratne

Surendran

Walton

et al. 2018

Malar J

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BackgroundAlthough Sri Lanka is considered as a malaria-free nation, the threat of re-emergence of outbreaks still remains due to the high prevalence and abundance of malaria vectors. Analysis of population genetic structure of malaria vectors is considered to be one of the vital components in implementing successful vector control programmes. The present study was conducted to determine the population genetic structure of three abundant malaria vectors; Anopheles subpictus sensu lato (s.l.), Anopheles peditaneatus and Anopheles vagus from five administrative districts in two climatic zones; intermediate zone (Badulla and Kurunegala districts) and dry zone (Ampara, Batticoloa and Jaffna districts) of Sri Lanka using the mitochondrial gene, cytochrome c oxidase subunit I (COI).MethodsAdult mosquitoes of An. subpictus s.l., An. peditaeniatus, and An. vagus were collected from five study sites located in five districts using cattle baited traps and backpack aspirators. Representative samples of each species that were morphologically confirmed were selected from each locality in generating COI sequences (> 6 good quality sequences per species per locality).ResultsAnopheles subpictus s.l. specimens collected during the study belonged to two sibling species; An. subpictus ‘A’ (from all study sites except from Jaffna) and An. subpictus ‘B’ (only from Jaffna). The results of haplotype and nucleotide diversity indices showed that all the three species are having high genetic diversity. Although a high significant pairwise difference was observed between An. subpictus ‘A’ and ‘B’ (Fst> 0.950, p < 0.05), there were no significant genetic population structures within An. peditaeniatus, An. vagus and An. subpictus species A (p > 0.05), indicating possible gene flow between these populations.ConclusionsGene flow among the populations of An. peditaeniatus, An. vagus and An. subpictus species A was evident. Application of vector control measures against all mosquito species must be done with close monitoring since gene flow can assist the spread of insecticide resistance genes over a vast geographical area.Electronic supplementary materialThe online version of this article (10.1186/s12936-018-2419-x) contains supplementary material, which is available to authorized users.

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Review of genetic diversity in malaria vectors (Culicidae: Anophelinae)

Loaiza

Bermingham

Sanjur

et al. 2012

Infection, Genetics and Evolution

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Population Genetic Structure ofAnopheles Arabiensis(Diptera: Culicidae) in a Rice Growing Area of Central Kenya

Cited by 9 publications

References 42 publications

Agricultural chemicals: life changer for mosquito vectors in agricultural landscapes?

Agricultural chemicals: life changer for mosquito vectors in agricultural landscapes?

Genetic diversity and population structure of malaria vector mosquitoes Anopheles subpictus, Anopheles peditaeniatus, and Anopheles vagus in five districts of Sri Lanka

Review of genetic diversity in malaria vectors (Culicidae: Anophelinae)

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