Behavioral responses to transfluthrin by Aedes aegypti, Anopheles minimus, Anopheles harrisoni, and Anopheles dirus (Diptera: Culicidae)

Information on factors influencing the behavioral responses of mosquitoes to repellents is lacking and poorly understood, especially in the Anopheles species, night-biting mosquitoes. Our goal was to investigate the impact of different time periods on circadian activity and behavioral responses of two malaria vectors, Anopheles minimus and An. dirus, to 5% DEET using an excito-repellency test system. Each mosquito species was exposed to the repellent during the daytime (06.00–18.00) and nighttime (18.00–06.00), and time of observation was further divided into four 3-h intervals. Significant escape responses were observed between daytime and nighttime for An. minimus in both noncontact and contact tests. An. dirus showed statistical differences in contact irritancy escape response, whereas no significant difference was found in noncontact repellency tests. Both mosquito species showed more significantly higher escape responses when exposed to DEET during the afternoon and late in the night. This finding indicates that the time of testing may affect the behavioral responses of mosquitoes to repellents, especially in An. minimus and An. dirus. A better understanding of nocturnally active mosquito behavioral responses spanning from dusk to dawn would assist in optimizing product development, screening, and effective evaluation.

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Behavioral responses of Aedes aegypti, Aedes albopictus, Culex quinquefasciatus , and Anopheles minimus against various synthetic and natural repellent compounds

Journal of Vector Ecology ◽

10.1111/jvec.12108 ◽

2014 ◽

Vol 39 (2) ◽

pp. 328-339 ◽

Cited By ~ 20

Author(s):

Sunaiyana Sathantriphop ◽

Sabrina A. White ◽

Nicole L. Achee ◽

Unchalee Sanguanpong ◽

Theeraphap Chareonviriyaphap

Keyword(s):

Aedes Aegypti ◽

Aedes Albopictus ◽

Culex Quinquefasciatus ◽

Behavioral Responses ◽

Anopheles Minimus

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Ligusticum sinense Nanoemulsion Gel as Potential Repellent against Aedes aegypti, Anopheles minimus, and Culex quinquefasciatus (Diptera: Culicidae)

Insects ◽

10.3390/insects12070596 ◽

2021 ◽

Vol 12 (7) ◽

pp. 596

Author(s):

Anuluck Junkum ◽

Wanchai Maleewong ◽

Atiporn Saeung ◽

Danita Champakaew ◽

Arpaporn Chansang ◽

...

Keyword(s):

Aedes Aegypti ◽

Culex Quinquefasciatus ◽

Disease Transmission ◽

Skin Irritation ◽

Mosquito Vectors ◽

Plant Family ◽

Anopheles Minimus ◽

Human Volunteers ◽

Nanoemulsion Gel ◽

Fresh Preparation

Ligusticum sinense Oliv. cv. is a species of Umbelliferae (Apiaceae), a large plant family in the order Apiales. In this study, L. sinense hexane extract nanoemulsion gel (LHE-NEG) was investigated for mosquito repellency and compared to the standard chemical, N,N-diethyl-3-methylbenzamide (DEET), with the goal of developing a natural alternative to synthetic repellents in protecting against mosquito vectors. The results demonstrated that LHE-NEG afforded remarkable repellency against Aedes aegypti, Anopheles minimus, and Culex quinquefasciatus, with median protection times (MPTs) of 5.5 (4.5–6.0), 11.5 (8.5–12.5), and 11.25 (8.5–12.5) h, respectively, which was comparable to those of DEET-nanoemulsion gel (DEET-NEG: 8.5 (7.0–9.0), 12.0 (10.0–12.5), and 12.5 (10.0–13.5) h, respectively). Evaluation of skin irritation in 30 human volunteers revealed no potential irritant from LHE-NEG. The physical and biological stability of LHE-NEG were determined after being kept under heating/cooling cycle conditions. The stored samples of LHE-NEG exhibited some changes in appearance and differing degrees of repellency between those kept for 3 and 6 heating/cooling cycles, thus providing slightly shorter MPTs of 4.25 (4.0–4.5) and 3.25 (2.5–3.5) h, respectively, when compared to those of 5.0 (4.5–6.0) h in fresh preparation. These findings encourage commercially developed LHE-based products as an alternative to conventional synthetic repellents in preventing mosquito bites and helping to interrupt mosquito-borne disease transmission.

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The impact of transfluthrin on the spatial repellency of the primary malaria mosquito vectors in Vietnam: Anopheles dirus and Anopheles minimus

Malaria Journal ◽

10.1186/s12936-019-3092-4 ◽

2020 ◽

Vol 19 (1) ◽

Cited By ~ 1

Author(s):

Nicholas J. Martin ◽

Vu S. Nam ◽

Andrew A. Lover ◽

Tran V. Phong ◽

Tran C. Tu ◽

...

Keyword(s):

Vector Control ◽

Large Scale ◽

Limit Of Detection ◽

Malaria Vectors ◽

Adult Mosquito ◽

Anopheles Dirus ◽

Anopheles Minimus ◽

Control Programmes ◽

The Impact ◽

Spatial Repellency

Abstract Background The complexity of mosquito-borne diseases poses a major challenge to global health efforts to mitigate their impact on people residing in sub-tropical and tropical regions, to travellers and deployed military personnel. To supplement drug- and vaccine-based disease control programmes, other strategies are urgently needed, including the direct control of disease vectors. Modern vector control research generally focuses on identifying novel active ingredients and/or innovative methods to reduce human-mosquito interactions. These efforts include the evaluation of spatial repellents, which are compounds capable of altering mosquito feeding behaviour without direct contact with the chemical source. Methods This project examined the impact of airborne transfluthrin from impregnated textile materials on two important malaria vectors, Anopheles dirus and Anopheles minimus. Repellency was measured by movement within taxis cages within a semi-field environment at the National Institute of Hygiene and Epidemiology in Hanoi, Vietnam. Knockdown and mortality were measured in adult mosquito bioassay cages. Metered-volume air samples were collected at a sub-set of points in the mosquito exposure trial. Results Significant differences in knockdown/mortality were observed along a gradient from the exposure source with higher rates of knockdown/mortality at 2 m and 4 m when compared with the furthest distance (16 m). Knockdown/mortality was also greater at floor level and 1.5 m when compared to 3 m above the floor. Repellency was not significantly different except when comparing 2 m and 16 m taxis cages. Importantly, the two species reacted differently to transfluthrin, with An. minimus being more susceptible to knockdown and mortality. The measured concentrations of airborne transfluthrin ranged from below the limit of detection to 1.32 ng/L, however there were a limited number of evaluable samples complicating interpretation of these results. Conclusions This study, measuring repellency, knockdown and mortality in two malaria vectors in Vietnam demonstrates that both species are sensitive to airborne transfluthrin. The differences in magnitude of response between the two species requires further study before use in large-scale vector control programmes to delineate how spatial repellency would impact the development of insecticide resistance and the disruption of biting behaviour.

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BEHAVIORAL RESPONSES TO DDT AND PYRETHROIDS BETWEEN ANOPHELES MINIMUS SPECIES A AND C, MALARIA VECTORS IN THAILAND

American Journal of Tropical Medicine and Hygiene ◽

10.4269/ajtmh.2005.73.343 ◽

2005 ◽

Vol 73 (2) ◽

pp. 343-349 ◽

Cited By ~ 30

Author(s):

JINNAPA POTIKASIKORN ◽

THEERAPHAP CHAREONVIRIYAPHAP ◽

MICHAEL J. BANGS ◽

ATCHARIYA PRABARIPAI

Keyword(s):

Behavioral Responses ◽

Malaria Vectors ◽

Anopheles Minimus

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Comparative Behavioral Responses of Pyrethroid-Susceptible and -Resistant Aedes aegypti (Diptera: Culicidae) Populations to Citronella and Eucalyptus Oils

Journal of Medical Entomology ◽

10.1603/me13191 ◽

2014 ◽

Vol 51 (6) ◽

pp. 1182-1191 ◽

Cited By ~ 11

Author(s):

Sunaiyana Sathantriphop ◽

Kanutcharee Thanispong ◽

Unchalee Sanguanpong ◽

Nicole L. Achee ◽

Michael J. Bangs ◽

...

Keyword(s):

Aedes Aegypti ◽

Behavioral Responses

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Effect of Cymbopogon citratus (lemongrass) and Syzygium aromaticum (clove) oils on the morphology and mortality of Aedes aegypti and Anopheles dirus larvae

Parasitology Research ◽

10.1007/s00436-016-4910-z ◽

2016 ◽

Vol 115 (4) ◽

pp. 1691-1703 ◽

Cited By ~ 14

Author(s):

Mayura Soonwera ◽

Siriporn Phasomkusolsil

Keyword(s):

Aedes Aegypti ◽

Syzygium Aromaticum ◽

Cymbopogon Citratus ◽

Anopheles Dirus

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Behavioral Responses of Aedes aegypti (Diptera: Culicidae) Exposed to Deltamethrin and Possible Implications for Disease Control

Journal of Medical Entomology ◽

10.1603/0022-2585-41.6.1055 ◽

2004 ◽

Vol 41 (6) ◽

pp. 1055-1063 ◽

Cited By ~ 52

Author(s):

Monthathip Kongmee ◽

Atchariya Prabaripai ◽

Pongthep Akratanakul ◽

Michael J. Bangs ◽

Theeraphap Chareonviriyaphap

Keyword(s):

Aedes Aegypti ◽

Disease Control ◽

Behavioral Responses

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Ultra-Low Volume Application of Spinosad (Natular 2EC) Larvicide as a Residual in a Tropical Environment Against Aedes and Anopheles Species

Journal of the American Mosquito Control Association ◽

10.2987/17-6692.1 ◽

2018 ◽

Vol 34 (1) ◽

pp. 58-62 ◽

Cited By ~ 3

Author(s):

Seth C. Britch ◽

Kenneth J. Linthicum ◽

Robert L. Aldridge ◽

Frances V. Golden ◽

Arissara Pongsiri ◽

...

Keyword(s):

Aedes Aegypti ◽

Management Program ◽

Dry Season ◽

Tropical Environment ◽

Integrated Vector Management ◽

Anopheles Dirus ◽

Important Species ◽

Anopheles Species ◽

Vector Management ◽

Low Volume

ABSTRACT We investigated the efficacy of a liquid larvicide, Natular 2EC® (spinosad), applied with ultra-low volume sprayer as a residual application during the dry season in southeastern Thailand against 4 medically important species—Aedes aegypti, Ae. albopictus, Anopheles dirus, and An. minimus. We found that this larvicide could be applied as a residual to dry areas known to collect water and potentially still be effective after rains or irrigation, which could increase the flexibility and efficiency of an integrated vector management program targeting these species. This investigation also demonstrated, for the 1st time, efficacy of spinosad against An. minimus and An. dirus.

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