Development and Evaluation of an Attractive Self-Marking Ovitrap to Measure Dispersal and Determine Skip Oviposition in<i>Aedes albopictus</i>(Diptera: Culicidae) Field Populations

Davis, Timothy J.; Kaufman, Phillip E.; Tatem, Andrew J.; Hogsette, Jerome A.; Kline, Daniel L.

doi:10.1093/jme/tjv170

Cited by 17 publications

(13 citation statements)

References 20 publications

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“…Phytochemicals can attract mosquitoes of both sexes, as well as females at all stages of the gonotrophic cycle, making them a versatile additive to traps for mosquito surveillance and population reduction [39,97,98]. Although mosquitoes are usually regarded as nectar thieves to the Trends Trends in in Parasitology Parasitology Figure 3.…”

Section: Using Plants In Mosquito Controlmentioning

confidence: 99%

Not Just from Blood: Mosquito Nutrient Acquisition from Nectar Sources

Barredo

DeGennaro

2020

Trends in Parasitology

117

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Anthropophilic female mosquitoes are well known for their strong attraction to human hosts, but plant nectar is a common energy source in their diets. When sugar sources are scarce, female mosquitoes of some species can compensate by taking larger and more frequent blood meals. Male mosquitoes are exclusively dependent on plant nectar or alternative sugar sources. Plant preference is likely driven by an innate attraction that may be enhanced by experience, as mosquitoes learn to recognize available sugar rewards. Nectar-seeking involves the integration of at least three sensory systems: olfaction, vision and taste. The prevention of vector-borne illnesses, the determination of the mosquitoes' ecological role, and the design of efficient sugar-baited traps will all benefit from understanding the molecular basis of nectar-seeking. Plant Nectar Is a Common Nutrition Source across Mosquito SpeciesNectar-feeding constitutes an important source of nutrition for adult mosquitoes of both sexes, particularly males, which feed exclusively from plant nectar and require frequent sugar intake for survival [1,2]. This behavior is often underappreciated when compared with blood-feeding because it is during the latter that transmission of pathogens can occur. A few mosquito genera feed solely from plant sources [3], while in hematophagous (see Glossary) species, females consume sugar sources as well as blood. If deprived of sugar, males typically die within 4 days of eclosion [4]. Moreover, lacking the energy reserves needed for flying and copulation that come from a sugar meal, males are unlikely to achieve reproductive success [1]. Although females are less susceptible to rapid mortality caused by sugar deprivation, their survival rate and fecundity can be compromised by reduced energy reserves [1,4]. The sensory cues that enable nectar-feeding include odors [1,2], tastants [5], and visual stimuli [6,7], but the molecular mechanisms of how these cues are perceived, as well as their relative contribution to the detection of a nectar source, are poorly understood (Figure 1). This review highlights the role of sugar feeding in the life cycle of mosquitoes, the plant sources they prefer, the volatiles that attract them, and the contribution of vision, olfaction, and gustation to this behavior.

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Section: Using Plants In Mosquito Controlmentioning

confidence: 99%

Not Just from Blood: Mosquito Nutrient Acquisition from Nectar Sources

Barredo

DeGennaro

2020

Trends in Parasitology

117

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“…aegypti and Ae. albopictus bet-hedge by using a skip-oviposition strategy [ 7 , 8 ], whereby eggs are distributed across multiple developmental sites per clutch. Because of skip-oviposition, it is difficult to eliminate all of the numerous mosquito oviposition sites from a peridomestic landscape.…”

Section: Introductionmentioning

confidence: 99%

“…This range of exposures potentially produces a suite of sublethal outcomes depending on what point the mosquito escapes exposure [ 15 , 16 ]. Sublethal impairment of mosquito reproduction by spatial repellents is relevant for container-inhabiting mosquitoes because they live in close association with humans and have relatively short-range oviposition site use [ 8 ]. This allows spatial repellents to impact container-inhabiting mosquitoes when host-seeking, gravid, or ready for oviposition.…”

Section: Introductionmentioning

confidence: 99%

Sublethal effects of a vapour-active pyrethroid, transfluthrin, on Aedes aegypti and Ae. albopictus (Diptera: Culicidae) fecundity and oviposition behaviour

et al. 2018

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BackgroundIt is assumed that mosquitoes surviving exposure to spatial repellents when attempting to bite a host will not have significant adverse impacts on their downstream biology. Therefore, a critical knowledge gap is understanding the extent to which sublethal exposure to volatile pyrethroids may damage the performance of mosquitoes that survive exposure to vapour-active pyrethroids. To address this, laboratory-reared Aedes aegypti (L.) and Ae. albopictus (Skuse) were exposed to one of three sublethal concentrations of transfluthrin before being offered a blood-meal, after which their survival, fecundity, fertility, and egg-laying behaviour was assessed.ResultsBoth species expressed reduced skip-oviposition behaviour at all exposures. Both species also suffered a major reduction in viable eggs (50–75% reduction in viable eggs laid). A phenotype where eggs collapsed after laying was observed in Ae. aegypti, and this response increased with exposure concentrations. Dissected females of both species retained 50% or fewer of their eggs, with Ae. albopictus retaining a significant proportion of melanised oocytes following the highest exposure.ConclusionsOur findings suggest that volatile pyrethroids can reduce skip-oviposition, which may improve source reduction outcomes during integrated management. The additional fecundity reduction caused by sublethal exposures to volatile pyrethroids improves our confidence in recommending them for urban vector management. Furthermore, we suggest that volatile pyrethroids should be adapted into delivery methods compatible with mosquito abatement programs.Electronic supplementary materialThe online version of this article (10.1186/s13071-018-3065-4) contains supplementary material, which is available to authorized users.

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“…albopictus are “bet-hedgers” that employ strategies to minimize the risk of total reproductive failure, or the loss of all eggs, over space and time by laying their eggs among several oviposition sources [25,26]. This “skip-oviposition” strategy [27,28] means the attractiveness of the trap relative to alternative water-holding containers is critical for control effectiveness. Of note, temperate populations of Ae.…”

Section: Introductionmentioning

confidence: 99%

The State of the Art of Lethal Oviposition Trap-Based Mass Interventions for Arboviral Control

Johnson

Ritchie

Fonseca

2017

Insects

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The intensifying expansion of arboviruses highlights the need for effective invasive Aedes control. While mass-trapping interventions have long been discredited as inefficient compared to insecticide applications, increasing levels of insecticide resistance, and the development of simple affordable traps that target and kill gravid female mosquitoes, show great promise. We summarize the methodologies and outcomes of recent lethal oviposition trap-based mass interventions for suppression of urban Aedes and their associated diseases. The evidence supports the recommendation of mass deployments of oviposition traps to suppress populations of invasive Aedes, although better measures of the effects on disease control are needed. Strategies associated with successful mass-trap deployments include: (1) high coverage (>80%) of the residential areas; (2) pre-intervention and/or parallel source reduction campaigns; (3) direct involvement of community members for economic long-term sustainability; and (4) use of new-generation larger traps (Autocidal Gravid Ovitrap, AGO; Gravid Aedes Trap, GAT) to outcompete remaining water-holding containers. While to the best of our knowledge all published studies so far have been on Ae. aegypti in resource-poor or tropical settings, we propose that mass deployment of lethal oviposition traps can be used for focused cost-effective control of temperate Ae. albopictus pre-empting arboviral epidemics and increasing participation of residents in urban mosquito control.

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Development and Evaluation of an Attractive Self-Marking Ovitrap to Measure Dispersal and Determine Skip Oviposition inAedes albopictus(Diptera: Culicidae) Field Populations

Cited by 17 publications

References 20 publications

Not Just from Blood: Mosquito Nutrient Acquisition from Nectar Sources

Not Just from Blood: Mosquito Nutrient Acquisition from Nectar Sources

Sublethal effects of a vapour-active pyrethroid, transfluthrin, on Aedes aegypti and Ae. albopictus (Diptera: Culicidae) fecundity and oviposition behaviour

The State of the Art of Lethal Oviposition Trap-Based Mass Interventions for Arboviral Control

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