Chapter 9: Odour-mediated host selection and discrimination in mosquitoes DOI
Annika Hinze, Sharon R. Hill, Rickard Ignell

et al.

Published: Dec. 18, 2022

Haematophagous female mosquitoes differ in their selection of hosts, ranging from generalists to specialists. Specialist mosquitoes, particularly those that prefer feed on humans, constitute a significant threat human health, as they can transmit pathogens causing, e.g. malaria, yellow fever, dengue and West Nile fever. To select discriminate among potential vertebrate host species, rely heavily sense smell. In this chapter, we distinguish between preference choice, terms often are used erroneously conjunction with discrimination, the methods define these behaviours. Increasing evidence suggest odour blends, composed shared generic volatile organic compounds, for discrimination. The identity host-related compounds is discussed, along available information cognate chemosensory receptors neural circuitry. Fundamental knowledge underlying molecular mechanisms regulating odour-mediated will continue be key our improved understanding genetic basis evolution While there has been progress revealing discrimination conclude still open questions address.

Language: Английский

The complexities of blood‐feeding patterns in mosquitoes and sandflies and the burden of disease: A minireview DOI Creative Commons
Fatma Bursalı, Mustapha Touray

Veterinary Medicine and Science, Journal Year: 2024, Volume and Issue: 10(5)

Published: Aug. 22, 2024

Mosquitoes and sandflies exhibit a wide range of blood feeding patterns, targeting vertebrate species, including birds, mammals, reptiles, amphibians, for proteins vital egg development. This broad host increases the opportunity them to acquire pathogens numerous debilitating-and-fatal diseases from various animal reservoirs, playing significant role in disease crossover between animals humans, also known as zoonotic transmission. review focuses on intricate blood-feeding habits these dipteran vectors, their sensory systems complex dance pathogen during We delve into influence sources spread by examining insect immune response its interplay with pathogens. The remarkable sense smell guiding towards food hosts is explored, highlighting multiple cues navigation. Finally, we examine challenges mosquito control strategies explore innovations this field, emphasizing need sustainable solutions combat global health threat. By understanding biology behaviour insects, can develop more effective protect ourselves mitigate burden vector-borne diseases.

Language: Английский

Citations

7
Chronic larval exposure to thiacloprid impairs honeybee antennal selectivity, learning and memory performances DOI Creative Commons
Ke Li,

Xiasang Chen,

Pingli Dai

et al.

Frontiers in Physiology, Journal Year: 2023, Volume and Issue: 14

Published: April 20, 2023

The use of agricultural neonicotinoid insecticides has sub-lethal chronic effects on bees that are more prevalent than acute toxicity. Among these insecticides, thiacloprid, a commonly used compound with low toxicity, attracted significant attention due to its potential impact the olfactory and learning abilities honeybees. effect larval exposure thiacloprid antennal activity adult honeybees ( Apis mellifera L.) is not yet fully understood. To address this knowledge gap, laboratory-based experiments were conducted in which honeybee larvae administered (0.5 mg/L 1.0 mg/L). Using electroantennography (EAG), impacts selectivity common floral volatiles evaluated. Additionally, odor-related memory also assessed. results study reveal, for first time, decreased antenna EAG responses scents, leading increased high-dose (1.0 mg/L) group compared control (0 vs . mg/L: p = 0.042). suggest negatively affected odor-associated paired acquisition, as well medium-term (1 h) 0.019) long-term (24 0.037) amplitudes dramatically reduced following R-linalool training 0.001; 0 0.5 0.027), while activities only differed significantly between unpaired groups. Our indicated concentrations may affect perception behaviors These findings have important implications safe agrochemicals environment.

Language: Английский

Citations

14
Chemical Ecology and Management of Dengue Vectors DOI Creative Commons
Baldwyn Torto, David P. Tchouassi

Annual Review of Entomology, Journal Year: 2023, Volume and Issue: 69(1), P. 159 - 182

Published: Aug. 25, 2023

Dengue, caused by the dengue virus, is most widespread arboviral infectious disease of public health significance globally. This review explores communicative function olfactory cues that mediate host-seeking, egg-laying, plant-feeding, and mating behaviors in

Language: Английский

Citations

14
A critical review of current laboratory methods used to evaluate mosquito repellents DOI Creative Commons
Hailey A. Luker

Frontiers in Insect Science, Journal Year: 2024, Volume and Issue: 4

Published: Jan. 18, 2024

Pathogens transmitted by mosquitoes threaten human health around the globe. The use of effective mosquito repellents can protect individuals from contracting mosquito-borne diseases. Collecting evidence to confirm and quantify effectiveness a repellent is crucial requires thorough standardized testing. There are multitudes methods test that each have their own strengths weaknesses. Determining which type conduct be challenging collection currently used has changed over time. Some these powerful rapidly screen numerous putative treatments. Other responses specific treatments measure either spatial or contact repellency. A subset uses live animals volunteers repellency Assays greatly vary in affordability accessibility for researchers and/or may require additional results. Here I present critical review covers some most frequently laboratory assays last two decades. discuss experimental designs highlight weaknesses method covered.

Language: Английский

Citations

5
The neuroecology of olfaction in bees DOI Creative Commons

Wendy Carolina Gomez Ramirez,

Nyasha KT Thomas,

Iman J Muktar

et al.

Current Opinion in Insect Science, Journal Year: 2023, Volume and Issue: 56, P. 101018 - 101018

Published: Feb. 25, 2023

The focus of bee neuroscience has for a long time been on only handful social honeybee and bumblebee species, out thousands bees species that have described. On the other hand, information about chemical ecology is much more abundant. Here we attempted to compile scarce olfactory systems across species. We also review major categories intra- inter-specific behaviors bees, with specific recent literature. finish by discussing most promising avenues research in near future.

Language: Английский

Citations

12
Menstrual Cycle Matters in Host Attractiveness to Mosquitoes and Topical Repellent Protection DOI Creative Commons
Mara Moreno-Gómez, Sílvia Abril, Júlia Mayol-Pérez

et al.

Insects, Journal Year: 2025, Volume and Issue: 16(3), P. 265 - 265

Published: March 3, 2025

Human hosts exhibit remarkable variability in their attractiveness to mosquitoes, leading differences biting rates. It is essential understand the factors behind this if we wish develop more effective strategies for controlling transmission of mosquito-borne diseases. While past studies have shed significant light on forces shaping host continue lack information about variation within individual hosts. For example, little attention has been paid potential impact menstrual cycle. Our study explored relationship between cycle, and effectiveness topical mosquito repellents. We found that landing rate was higher repellent protection time shorter during ovulation than menstruation luteal phase. By beginning clarify intricate interplay human physiology behavior, our results contribute growing body knowledge regarding affect within-individual which implications efficacy disease prevention strategies.

Language: Английский

Citations

0
Impact of elevated CO2 level and egg quiescence duration on gene expression in the peripheral olfactory system of Aedes aegypti DOI Creative Commons

Sukritha Nalikkaramal,

Sharon R. Hill, Rickard Ignell

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 24, 2025

Abstract Elevation in CO 2 can significantly impact the biology of various organisms, affecting life-history traits both aquatic and terrestrial forms, including disease-vectoring mosquitoes. For mosquitoes, this effect is accentuated by egg quiescence duration, resulting a change foraging adult females. Female mosquitoes rely on their olfactory system for locating resources, such as nectar blood. This study employs transcriptomic approach to investigate how projected elevation level, under worst-case scenario, interacts with extended duration modulate molecular machinery peripheral system, antennae maxillary palps, yellow fever mosquito, Aedes aegypti . The transcriptome analysis demonstrates significant changes abundance genes related metabolism, xenobiotics degradation chemosensory function, most pronounced effects observed sensing tissue, palp. provides novel insights into anthropogenic climate sensory disease vectors, which may have cascading resource-seeking behaviour.

Language: Английский

Citations

0
Species-Specificity in Thermopreference and CO2-Gated Heat-Seeking in Culex Mosquitoes DOI Creative Commons
Joanna M. Reinhold, Karthikeyan Chandrasegaran, Helen Oker

et al.

Insects, Journal Year: 2022, Volume and Issue: 13(1), P. 92 - 92

Published: Jan. 14, 2022

Combining thermopreference (Tp) and CO2-gated heat-seeking assays, we studied the thermal preferendum response to cues in three Culex mosquito species exhibiting differences native habitat host preference (e.g., biting cold and/or warm-blooded animals). Results show that these differ both Tp behavior. In particular, found territans, which feed primarily on cold-blood hosts, did not respond heat during regardless of CO2 concentration, but exhibited an intermediate resting. contrast, Cx. quinquefasciatus, feeds warm blooded sought coolest locations a gradient responded only moderately stimuli when paired with at higher concentrations. The third species, tarsalis, has been shown wide range high levels Tp. This study provides first insights into role seeking behavior disease vectors genus highlights preferred resting temperatures.

Language: Английский

Citations

18
In vitro larvicidal activity of selected azabenzimidazole and diarylquinoline derivatives against Anopheles gambiae and in silico mechanistic analysis DOI
Kola A. Oluwafemi,

Anthony F. Adeforiti,

Oluwatoba Emmanuel Oyeneyin

et al.

Molecular Diversity, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

Citations

0
Mosquito repellent and larvicidal activity of essential oils of aromatic plant growing in Bangladesh: a review DOI Creative Commons

Fahima Nazmin,

Md Abdul Barek,

Arafat Miah

et al.

Clinical Phytoscience, Journal Year: 2025, Volume and Issue: 11(1)

Published: April 18, 2025

Abstract Background In tropical and subtropical regions, mosquitoes represent a significant public health concern, serving as primary carriers of numerous diseases. Due to Bangladesh’s in the monsoon climate, this country has heavy rainfall. addition, hot, humid climate makes Bangladesh perfect procreation place for mosquito-borne Mosquito-transmitted diseases continue contribute significantly global mortality, with over 700 million people experiencing such annually. Fortunately, great resource essential oils containing aromatic plants, these are belonging various families Meliaceae, Asteraceae, Lauraceae, Rutaceae, Apiaceae, Poaceae, Zingiberaceae, Leguminosae Myrtaceae, Lamiaceae, Myristicaceae, Ranunculaceae, Piperaceae, Cupressaceae. The major goal review is examine plants grown that have been shown repellent, larvicidal, adulticidal activity against species mosquitoes. Methods Several keywords were searched collect data about medicinal mosquito-repellent larvicidal properties their phytochemical constituents from August 2019 June 2024. Results This revealed identifying compounds responsible mostly relied on gas chromatography (GC) combined mass spectrometry (MS). most common groups monoterpenes, diterpenes, isoprenoids, sesquiterpenoids. According WHO guidelines, human bait technique Technique extensively used testing repellency, while rabbit excite repellency chamber test less commonly used. Laboratory widely Larvicidal bioassay. Recorded potency was counted mainly LC 50 (Lethal Concentration), LD Dose), Kd (Knockdown Time), KC LT KT percentage protection, time, etc. Conclusions It can be concluded chemical contained potential environmentally friendly repellents, controlling preventing disease vectors Anopheles , Aedes Culex . efficacy possibly based compositions which and/or minor aforementioned activities.

Language: Английский

Citations

0