The effect of commercial herbicide exposure on the life history and insecticide resistance phenotypes of the major malaria vector Anopheles arabiensis (Diptera: culicidae)

Oliver, Shüné V.; Brooke, Basil D.

doi:10.1016/j.actatropica.2018.08.030

Cited by 19 publications

(29 citation statements)

References 37 publications

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“…Third, as with organic fertilizer, SENN‐DDT gained the greatest advantage in terms of increased insecticide tolerance (an advantage of a 1.7‐fold increase across treatments in contrast to the 1.4‐fold increase in SENN). Although the multifactorial effects of pollutants of varying toxicity on these strains have not been examined, previous studies on SENN and SENN‐DDT also suggest that SENN‐DDT has an advantage under situations where the pollutants are more toxic . These data suggest that although the uncontrolled use of insecticides in agriculture may unintentionally contribute to increased vector resistance to public health insecticides, this is not an exclusive causation.…”

Section: Discussionmentioning

confidence: 97%

“…Second, this is the second example of the SENN strain gaining a developmental advantage in conditions with less toxic pollutants. While SENN‐DDT were at an advantage under conditions of herbicide and heavy metal pollution, SENN and other susceptible strains were at a developmental advantage and gained longevity after exposure to organic fertilizer . Therefore, while the insecticide resistant SENN‐DDT strain was at an advantage when pollutants were highly toxic, the susceptible SENN strain was advantaged in terms of development and longevity when the pollutant was less toxic.…”

Section: Discussionmentioning

confidence: 99%

“…Due to the differences in insecticide tolerance between the two strains, different exposure times were needed to generate the mortality gradients required for Probit analysis. Control mosquitoes were simultaneously exposed to acetone for the duration of each experiment (solvent control) or remained unexposed (environmental control) . Lethal time (LT 50 ) was determined by Probit analysis…”

Section: Methodsmentioning

confidence: 99%

“…It has been shown that non‐pesticidal residues, such as herbicides and inorganic fertilizer, can alter life history traits in An. arabiensis . The runoff of fertilizers and other agrochemicals, particularly those of an inorganic nature, is known to pollute water bodies surrounding crops, creating attractive and nutrient‐rich pools for mosquitoes to breed in .…”

Section: Introductionmentioning

confidence: 99%

“…arabiensis. 20,21 The runoff of fertilizers and other agrochemicals, particularly those of an inorganic nature, is known to pollute water bodies surrounding crops, creating attractive and nutrient-rich pools for mosquitoes to breed in. 9,22 This can lead to increased vector abundance, as has consistently been observed in Kenya for An.…”

Section: Introductionmentioning

confidence: 99%

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Effects of inorganic fertilizer on larval development, adult longevity and insecticide susceptibility in the malaria vector Anopheles arabiensis (Diptera: Culicidae)

Samuel

Brooke

Oliver

2019

Pest Management Science

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BACKGROUND Exposure to inorganic fertilizer is common for the major malaria vector Anopheles arabiensis, which is closely associated with agricultural activities. The aim of this study was to understand if insecticide susceptible and resistant individuals respond to fertilizer exposure in the same manner. Two laboratory strains, SENN, an insecticide susceptible strain, and SENN‐DDT, an insecticide resistant strain selected strain selected from SENN, were used in this study. Both strains were exposed to one of three concentrations of a combination nitrogen‐phosphorus‐potassium (NPK) inorganic fertilizer, as well as nitrogenous (urea), phosphorus (superphosphate) and kaelic (potassium chloride, KCl) elemental fertilizer. The time to pupation was monitored, adult longevity was assessed and the insecticide tolerance of adults was determined. The effect of elemental fertilizers on ovipositioning site choice was also assessed. RESULTS For both strains, urea increased the number of eggs laid, while superphosphate resulted in a significant decrease in egg laying. Larval NPK exposure decreased the time to pupation in the SENN strain but not in SENN‐DDT. Urea exposure increased the time to pupation in both strains, while KCl decreased the time to pupation in both strains. Larval NPK exposure only affected adult male longevity at high concentrations. Larval exposure to NPK and KCl resulted in increased insecticide tolerance in both strains, with variable efficacy from strain to strain. CONCLUSION Exposure to inorganic fertilizers has a greater effect on insecticide susceptible An. arabiensis as compared to resistant strains, where the primary advantage is increased insecticide tolerance. These data also demonstrate that larval fertilizer exposure can affect fecundity and fertility, and alter the life histories of adult An. arabiensis. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of inorganic fertilizer on larval development, adult longevity and insecticide susceptibility in the malaria vector Anopheles arabiensis (Diptera: Culicidae)

Samuel

Brooke

Oliver

2019

Pest Management Science

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Impact of field‐realistic doses of glyphosate and nutritional stress on mosquito life history traits and susceptibility to malaria parasite infection

Bataillard

Christe

Pigeault

2020

Ecology and Evolution

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Glyphosate is the world's most widely used herbicide. The commercial success of this molecule is due to its nonselectivity and its action, which would supposedly target specific biosynthetic pathways found mainly in plants. Multiple studies have however provided evidence for high sensitivity of many nontarget species to glyphosate and/or to formulations (glyphosate mixed with surfactants). This herbicide, found at significant levels in aquatic systems through surface runoffs, impacts life history traits and immune parameters of several aquatic invertebrates' species, including disease‐vector mosquitoes. Mosquitoes, from hatching to emergence, are exposed to aquatic chemical contaminants. In this study, we first compared the toxicity of pure glyphosate to the toxicity of glyphosate‐based formulations for the main vector of avian malaria in Europe, Culex pipiens mosquito. Then we evaluated, for the first time, how field‐realistic dose of glyphosate interacts with larval nutritional stress to alter mosquito life history traits and susceptibility to avian malaria parasite infection. Our results show that exposure of larvae to field‐realistic doses of glyphosate, pure or in formulation, did not affect larval survival rate, adult size, and female fecundity. One of our two experimental blocks showed, however, that exposure to glyphosate decreased development time and reduced mosquito infection probability by malaria parasite. Interestingly, the effect on malaria infection was lost when the larvae were also subjected to a nutritional stress, probably due to a lower ingestion of glyphosate.

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Chemical composition and larvicidal activity against Aedes mosquitoes of essential oils from Arisaema fargesii

Huang

Lin

Jia

et al. 2019

Pest Management Science

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BACKGROUND: Dengue fever is caused by the spread of dengue virus by Aedes mosquito vectors. Currently, the most effective way to control dengue is by preventing mosquitoes from spreading the disease. Arisaema fargesii is a Chinese herbal medicine commonly used to repel mosquitoes. In our laboratory, anti-mosquito chemical components were extracted from A. fargesii, and the effects of these substances on mosquito larvae were examined. RESULTS: In total, 48 compounds corresponding to 98.79% of the total oil were identified and the major compounds identified were linalool (12.38%), carvacrol (8.27%), eugenol (5.21%), and -selinene (5.36%). Essential oil had larvicidal activity against Ae. aegypti and Ae. albopictus with LC 50 values of 40.49 mg/L, 47.01 mg/L, respectively. The LC 50 values of carvacrol, eugenol, linalool and -selinene were 32.78, 56.34, 70.56, 136.03 mg/L against Ae. aegypti larvae, and 39.08, 52.07, 82.34, 151.74 mg/L, respectively, against Ae. albopictus larvae. Biochemical assays of Aedes larvae showed that the activities of acetylcholinesterase (AChE), monooxygenases (MO), glutathione-S-transferase (GST), p-Nitrophenyl acetate (p-NPA) esterase, -esterase and -esterase were significantly affected by carvacrol. Essential oil induced the detoxification mechanism for the action of GST and MO.CONCLUSION: The result indicates that essential oil of A. fargesii and its isolated constituent have good inhibitory effects on the defense enzymes of Aedes mosquito larvae. A. fargesii essential oil can be used to control Aedes mosquito larvae to prevent the spread of dengue fever. /journal/ps a Retention index relative to n-alkanes on HP-5 MS capillary column. b Relative area (peak area relative to the total peak area). c RI, retention index, MS, mass spectrum, Co, co-injection with authentic compound. Pest Manag Sci 2020; 76: 534-542

show abstract

The effect of commercial herbicide exposure on the life history and insecticide resistance phenotypes of the major malaria vector Anopheles arabiensis (Diptera: culicidae)

Cited by 19 publications

References 37 publications

Effects of inorganic fertilizer on larval development, adult longevity and insecticide susceptibility in the malaria vector Anopheles arabiensis (Diptera: Culicidae)

Effects of inorganic fertilizer on larval development, adult longevity and insecticide susceptibility in the malaria vector Anopheles arabiensis (Diptera: Culicidae)

Impact of field‐realistic doses of glyphosate and nutritional stress on mosquito life history traits and susceptibility to malaria parasite infection

Chemical composition and larvicidal activity against Aedes mosquitoes of essential oils from Arisaema fargesii

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