A potential link between aromatics‐induced oviposition repellency behaviors and specific odorant receptor of Aedes albopictus

Pest Management Science, Год журнала: 2024, Номер 80(7), С. 3603 - 3611

Опубликована: Март 8, 2024

Abstract BACKGROUND The Asian tiger mosquito, Aedes albopictus , is a competent vector for the spread of several viral arboviruses including dengue, chikungunya, and Zika. Several vital mosquito behaviors linked to survival reproduction are primarily dependent on sophisticated olfactory system semiochemical perception. However, limited number studies has hampered our understanding relationship between A. acute complex chemical world. RESULTS Here, we performed qRT‐PCR assay antennae from differing sex, age physiological states, found that AalbOr10 was enriched in blood‐fed female mosquitoes. We then undertook single sensillum recording de‐orphan using panel physiologically behaviorally relevant odorants Drosophila ‘empty neuron’ system. results indicated activated by seven aromatic compounds, all which egg‐laying Furthermore, post‐RNA interference oviposition assay, reducing transcript level affected repellent activity mediated 2‐ethylphenol at low concentrations (10 −4 vol/vol). Computational modeling molecular docking suggested hydrogen bonds Y68 Y150 interaction with AalbOr10. CONCLUSION reveal potential link aromatics‐induced repellency specific odorant receptor . Our findings provide foundation identifying active semiochemicals monitoring or controlling populations. © 2024 Society Chemical Industry.

Язык: Английский

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Review on the impacts of indoor vector control on domiciliary pests: good intentions challenged by harsh realities

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2027)

Опубликована: Июль 23, 2024

Arthropod vectored diseases have been a major impediment to societal advancements globally. Strategies mitigate transmission of these include preventative care (e.g. vaccination), primary treatment and most notably, the suppression vectors in both indoor outdoor spaces. The outcomes vector control (IVC) strategies, such as long-lasting insecticide-treated nets (LLINs) residual sprays (IRSs), are heavily influenced by individual community-level perceptions acceptance. These perceptions, therefore product acceptance, largely successful non-target nuisance pests bed bugs cockroaches. Adoption consistent use LLINs IRS is responsible for immense reductions prevalence incidence malaria. However, recent observations suggest that failed pests, leading distrust abandonment, may threaten programme success further derail already slowed progress towards malaria elimination. We review evidence relationship between IVC discuss dearth research on this relationship. make case ancillary public health needs be considered development implementation new technologies

Язык: Английский

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Spectral preferences of mosquitos are altered by odors

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Abstract Vision underlies many important behaviors in insects generally and mosquitos specifically. Mosquito vision plays a role predator avoidance, mate finding, oviposition, locating vertebrate hosts, vectoring disease. Recent work has shown that when sensitized to CO2, the visual responses of Aedes aegypti are wavelength-dependent, but little is known about how other olfactory stimuli can modulate responses. The cues associated with flowers, or oviposition sites differs substantially it possible odors might prime mosquito system respond these different resources. To investigate interplay cues, we adapted previously used wind tunnel bioassays use quasi-monochromatic targets (390-740 nm) created novel LED synth. We coupled CO2 representative floral nectar assessed via 3D tracking female mosquitos. When alone present, observe lower preference for wavelengths green portion visible spectrum gradual increase as moved towards violet red ends spectrum. However, both flowers sites, observed significant increases (475-575 stimuli. In contrast host odor was saw increased across entire These shifts spectral preferences suggest not fixed shift depending on behavioral context.

Язык: Английский

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Duckweeds produce strong oviposition avoidance and high larval mortality in invasive Aedes mosquitoes

The Journal of Basic and Applied Zoology, Год журнала: 2025, Номер 86(1)

Опубликована: Март 2, 2025

Abstract Background We examined how two invasive mosquito species, Asian tiger mosquitoes, Aedes albopictus , and rock pool A. japonicus responded to the presence of duckweeds when ovipositing these plants affected larval survivorship found. Since have been shown increase egg-laying but kill larvae in some they could be used as a natural form biocontrol. A total four experiments were conducted 2019 2022 that quantified number eggs laid percent survival their sites with without Spirodela polyrhiza Wolffia arrhizal . Results Females both species significantly fewer duckweeds, increased mortality. In was 0% duckweeds. Conclusions Unfortunately, our results suggest biological control mosquitoes using appears less promising given ability females detect avoid plants.

Язык: Английский

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Reproductive Trade-Offs in Culex pipiens: Effects of CYV Infection and Delayed Mating

Insects, Год журнала: 2025, Номер 16(3), С. 252 - 252

Опубликована: Март 1, 2025

Arbovirus control strategies often target vector reproductive dynamics, with insect-specific viruses (ISVs) like Culex Y virus (CYV) offering potential as eco-friendly approaches by influencing mosquito reproduction without affecting humans or animals. This study investigated the interplay between autogeny, anautogeny, nutrient availability, and viral infection their effect on success in pipiens biotype molestus quinquefasciatus. CYV had a minimal impact parameters, even after five-day incubation period. Autogeny enabled Cx. to produce eggs blood meals, yet older females (3–5 days post-emergence) showed reduced unrelated deficiency, blood-feeding did not restore egg production. These findings demonstrate that age affects but quinquefasciatus suggest has negligible direct effects reproduction. work enhances our understanding of ISV biology ecology, supporting development innovative, sustainable arbovirus-control strategies.

Язык: Английский

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Efektivitas Atraktan Recycled Water terhadap Peningkatan Angka Bebas Jentik

ASPIRATOR - Journal of Vector-borne Disease Studies, Год журнала: 2025, Номер 15(2), С. 28 - 36

Опубликована: Апрель 30, 2025

The increasing cases of Dengue Hemorrhagic Fever (DHF) in Indonesia demands effective, affordable, and environmentally friendly vector control strategies. This study aimed to evaluate the effectiveness recycled water-based attractants improving Larvae-Free Index (Angka Bebas Jentik/ABJ) compared conventional water brown sugar plus yeast attractants. was conducted over nine weeks three hamlets with homogeneous environmental characteristics Pangkep Regency, South Sulawesi. Simple ovitraps were used attract gravid female mosquitoes, while ABJ measured through inspection natural containers. results showed that significantly increased ABJ, reaching 96.08% eighth week, higher than (53.03%) (37.50%). One-way ANOVA revealed a significant difference among attractant groups (p = 0.000), further analysis using Post-hoc Tukey test confirmed differences between other two In conclusion, proved be an effective for diverting mosquito oviposition from containers ovitraps, thereby ABJ. method has potential as practical, sustainable, community-based solution dengue-endemic areas.

Язык: Английский

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The ecological niche and population history shape mosquito population genetics on a group of three Caribbean islands

Parasites & Vectors, Год журнала: 2025, Номер 18(1)

Опубликована: Май 9, 2025

Язык: Английский

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Effect of different lining paper materials and infusions on oviposition preference of Aedes aegypti (Diptera: Culicidae) gravid mosquitoes

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Май 11, 2025

Aedes aegypti (Linnaeus) mosquito is a vector responsible for increasing global public health concerns due to its rapid geographical spread and vectorial capacity. Understanding the breeding behavior of Ae. crucial control this thereby limiting diseases. To study in laboratories ovitraps, different types lining-papers, surrounding inner surface container along with added infusions, are used. Lining-papers serve as surfaces oviposition infusions provide essential environment nurturing. The used laboratory rearing facilities or ovitraps influence preference, changing gravid mosquitoes. This presents comparative on preferences six lining-papers bioassay cage. ANOVA analysis shows significant effect preference that served surfaces. highest activity was observed 'agri seed germination paper-75' lining-paper when normal tap water infusion Likewise, statistical 'plain printing offset paper 80 GSM' used, highly statistically cups.

Язык: Английский

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Semi-field experiments highlight importance of maize and rice pollen on oviposition site choice and larval development in An. arabiensis

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Май 22, 2025

Background Members of the Anopheles gambiae complex such as s.s., coluzzii, and arabiensis are among key malaria vectors in sub-Saharan Africa. These species often abundant areas intense rice maize farming with temporary water pools reflecting dependence their larvae on pollen shed food. This study explored oviposition preference wild-caught gravid An. response to artificial aquatic habitats a semi-field system. Methods Experimental breeding were set-up two large compartments Rice respectively added eight randomly selected both while other used control without pollens. Forty released each compartment left overnight choose egg-laying habitats. Consequently, eggs sampled counted. A second experiment was conducted following similar procedure above counted returned respective development resultant monitored recorded until pupation. Results Pollen types strongly affected behaviour arabiensis. Females preferred lay surface over those pollen, pollen-less controls. The significantly by type highest total number offspring produced than no pollen. However, larval success comparatively lower containing suggesting that overcrowded. Conclusion demonstrates influence site selection has carry-over effect developmental offspring.

Язык: Английский

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From tissue engineering to mosquitoes: biopolymers as tools for developing a novel biomimetic approach to pest management/vector control

Parasites & Vectors, Год журнала: 2022, Номер 15(1)

Опубликована: Март 5, 2022

Abstract Background Pest management has been facing the spread of invasive species, insecticide resistance phenomena, and concern for impact chemical pesticides on human health environment. It tried to deal with them by developing technically efficient economically sustainable solutions complement/replace/improve traditional control methods. The renewal mainly directed towards less toxic or enhancing precision their delivery reduce volume employed side effects through lure-and-kill approaches based semiochemicals attractants. However, one main pest problems is that efficacy depends effectiveness attractant system, limiting its successful employment semiochemical stimuli-responsive insects. Biomaterial-based bioinspired/biomimetic already guide other disciplines (e.g., medical sciences) in could be a helpful tool create attractive new strategies liberate from need stimuli, simplify integration bioinsecticides, foster use still underemployed solutions. Approach proposed We propose an innovative approach, called “biomimetic lure-and-kill”. exploits biomimetic principles biocompatible/biodegradable biopolymers natural hydrogels) develop substrates selectively attract insects reproducing specific environmental conditions (biomimetic lure) kill hosting delivering biopesticide mechanical action. Biomimetic lure-and-kill-designed point provide system develop/improve make more cost-competitive conventional devices (e.g. traps). A first example application using tiger mosquito Aedes albopictus as model. Conclusions Biomaterials, particularly hydrogel form, can useful approach because they satisfy multiple needs simultaneously lure, lethality, biocompatibility, bioinsecticide growth). Such might cost-competitive, potential applicability several species. Moreover, it feasible, since all technologies necessary design configure materials characteristics are available market. Graphical

Язык: Английский

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