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Determination of Insecticidal Effect (LC50 and LC90) of Organic Fatty Acids Mixture (C8910+Silicone) Against Aedes aegypti and Aedes albopictus (Diptera: Culicidae)
Emerging and re-emerging vector-borne diseases such as chikungunya and dengue and associated Aedes vectors are expanding their historical ranges; thus, there is a need for the development of novel insecticides for use in vector control programs. The mosquito toxicity of a novel insecticide and repellent consisting of medium-chain carbon fatty acids (C8910) was examined. Determination of LC50 and LC90 was made against colony-reared Aedes aegypti (L.) and Aedes albopictus (Skuse) using probit analysis on mortality data generated by Centers for Disease Control and Prevention bottle bioassays. Six different concentrations of C...
Source: Journal of Medical Entomology - May 19, 2016 Category: Biology Authors: Dunford, J. C., Falconer, A., Leite, L. N., Wirtz, R. A., Brogdon, W. G. Tags: Short Communication Source Type: research

Comparison of Mosquito Magnet and Biogents Sentinel Traps for Operational Surveillance of Container-Inhabiting Aedes (Diptera: Culicidae) Species
Container-inhabiting Aedes are among the most medically important mosquito vectors of diseases. They also impact health and quality of life by their persistent and severe biting. Monitoring of container-inhabiting Aedes species is challenging due to the need for specialized traps and lures. Biogents Sentinel (BGS) trap has become a standard for Aedes albopictus (Skuse) surveillance; however, it has substantial problems with durability, quality of construction, and sample exposure to the elements. The goal of this study was to develop a methodology for collecting medically important container-inhabiting Aedes species in num...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Rochlin, I., Kawalkowski, M., Ninivaggi, D. V. Tags: Short Communication Source Type: research

Trapping the Tiger: Efficacy of the Novel BG-Sentinel 2 With Several Attractants and Carbon Dioxide for Collecting Aedes albopictus (Diptera: Culicidae) in Southern France
Targeted trapping of mosquito disease vectors plays an important role in the surveillance and control of mosquito-borne diseases. The Asian tiger mosquito, Aedes albopictus (Skuse), is an invasive species, which is spreading throughout the world, and is a potential vector of 24 arboviruses, particularly efficient in the transmission of chikungunya, dengue, and zika viruses. Using a 4 x 4 Latin square design, we assessed the efficacy of the new BG-Sentinel 2 mosquito trap using the attractants BG-lure and (R)-1-octen-3-ol cartridge, alone or in combination, and with and without carbon dioxide, for the field collection of Ae...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Roiz, D., Duperier, S., Roussel, M., Bousses, P., Fontenille, D., Simard, F., Paupy, C. Tags: Short Communication Source Type: research

Differential protein expression in the midgut of Culex quinquefasciatus mosquitoes induced by the insecticide temephos
Abstract Mosquitoes are vectors for pathogens of malaria, lymphatic filariasis, dengue, chikungunya, yellow fever and Japanese encephalitis. Culex quinquefasciatus Say, 1823 (Diptera: Culicidae) is a known vector of lymphatic filariasis. Its control in Brazil has been managed using the organophosphate temephos. Studies examining the proteins of Cx. quinquefasciatus that are differentially expressed in response to temephos further understanding of the modes of action of the insecticide and may potentially identify resistance factors in the mosquito. In the present study, a comparative proteomic analysis, using 2‐dimension...
Source: Medical and Veterinary Entomology - February 29, 2016 Category: Veterinary Research Authors: P. D. GAMES, S. N. ALVES, B. B. KATZ, J. M. TOMICH, J. E. SERRÃO Tags: Original Article Source Type: research

Clip-on Device Offers Protection Against Mosquitoes
Annapolis, MD: February 3, 2016 -- A product called the OFF! ® Clip-On™ repellent device could be an effective tool for preventing bites from the Aedes aegypti mosquito -- the primary vector of Zika, chikungunya, dengue, and yellow fever -- according to an article in the Journal of Medical Entomology. read more
Source: ESA News - February 3, 2016 Category: Biology Authors: rlevine Tags: Press Releases Source Type: research

Clip-on device offers protection against mosquitoes that transmit Zika
(Entomological Society of America) A product called the OFF!® Clip-On™ repellent device could be an effective tool for preventing bites from the Aedes aegypti mosquito -- the primary vector of Zika, chikungunya, dengue, and yellow fever -- according to an article in the Journal of Medical Entomology.
Source: EurekAlert! - Biology - February 2, 2016 Category: Biology Source Type: news

Larval Temperature-Food Effects on Adult Mosquito Infection and Vertical Transmission of Dengue-1 Virus
Temperature–food interactions in the larval environment can affect life history and population growth of container mosquitoes Aedes aegypti (L.) and Aedes albopictus Skuse, the primary vectors of chikungunya and dengue viruses. We used Ae. aegypti, Ae. albopictus, and dengue-1 virus (DENV-1) from Florida to investigate whether larval rearing temperature can alter the effects of larval food levels on Ae. aegypti and Ae. albopictus life history and DENV-1 infection and vertical transmission. Although we found no effect of larval treatments on survivorship to adulthood, DENV-1 titer, or DENV-1 vertical transmission, rat...
Source: Journal of Medical Entomology - January 12, 2016 Category: Biology Authors: Buckner, E. A., Alto, B. W., Lounibos, L. P. Tags: Population and Community Ecology Source Type: research

Temporal genetic stability of Stegomyia aegypti (= Aedes aegypti) populations
Abstract The mosquito Stegomyia aegypti (= Aedes aegypti) (Diptera: Culicidae) is the primary vector of viruses that cause yellow fever, dengue and Chikungunya fever. In the absence of effective vaccines, the reduction of these diseases relies on vector control strategies. The success of these strategies is tightly linked to the population dynamics of target populations. In the present study, 14 collections from St. aegypti populations separated by periods of 1–13 years were analysed to determine their temporal genetic stability. Although temporal structure is discernible in most populations, the degree of temporal diffe...
Source: Medical and Veterinary Entomology - January 7, 2016 Category: Veterinary Research Authors: A. GLORIA‐SORIA, D. A. KELLNER, J. E. BROWN, C. GONZALEZ‐ACOSTA, B. KAMGANG, J. LUTWAMA, J. R. POWELL Tags: Short Communication Source Type: research

Behavioral Response of Aedes aegypti (Diptera: Culicidae) Larvae to Synthetic and Natural Attractants and Repellents
In this study, we evaluated a few compounds in a sensitive behavioral assay with Ae. aegypti larvae. The orientation of larvae to different compounds was surveyed using a performance index (PI). The PI represents the response to each odorant, where a value of +1 is indicative of full attraction and –1 represents complete repulsion. The widely used insect repellent N, N-diethyl-m-toluamide elicited a significantly negative PI, as did acetophenone and indole. A yeast extract, a known food source, elicited a significantly positive PI, as did 2-methylphenol, 1-octen-3-ol, 3-methylphenol, and fish food. On the other hand,...
Source: Journal of Medical Entomology - November 5, 2015 Category: Biology Authors: Gonzalez, P. V., Gonzalez Audino, P. A., Masuh, H. M. Tags: Vector Control, Pest Management, Resistance, Repellents Source Type: research

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