Navigation Links
Baiting mosquitoes with knowledge and proven insecticides
Date:11/13/2012

This press release is available in Spanish.

While one team of U.S. Department of Agriculture (USDA) scientists is testing the effectiveness of pesticides against mosquitoes, another group is learning how repellents work.

At the Agricultural Research Service (ARS) Center for Medical, Agricultural and Veterinary Entomology (CMAVE) in Gainesville, Fla., entomologist Sandra Allan is using toxic sugar-based baits to lure and kill mosquitoes. Allan and her CMAVE cooperators are evaluating insecticides and designing innovative technology to fight biting insects and arthropods. ARS is USDA's principal intramural scientific research agency.

Allan studied 10 different commercial pesticides that contain additives that enable the pesticides to be dissolved in water and ingested by mosquitoes. Pesticides were combined with a sucrose solution and fed to females of three mosquito species that transmit pathogens such as West Nile virus and arboviruses. While only females feed on blood, all mosquitoes need to feed on sugar and will potentially be attracted toand ingestthe toxic sugar bait.

Compounds from five different classes of insecticide-active ingredientspyrethroids, phenylpyroles, pyrroles, neonicotinoids and macrocyclic lactoneswere found to be toxic against all three mosquito species, Culex quinquefasciatus, Anopheles quadrimaculatus and Aedes taeniorhynchus.

Scientists at the ARS Henry A. Wallace Beltsville Agricultural Research Center in Beltsville, Md., are learning more about how mosquito repellents work. Entomologist Joseph Dickens and post-doctoral research associate Jonathan Bohbot found that several repellentsDEET, 2-undecanone, IR3535 and picaridinaffect specific odorant receptors in mosquitoes differently, thereby scrambling the insect's ability to detect chemical attractants.

In experiments, they injected frog eggs with odorant receptor genes. Molecular mechanisms within the eggs allowed these receptors to be reproduced in the outer cell membrane of the egg. Researchers then placed electrodes in the outer cell membrane and recorded electrical responses of the odorant receptors to chemical solutions.


'/>"/>

Contact: Sandra Avant
sandra.avant@ars.usda.gov
301-504-1654
United States Department of Agriculture - Research, Education and Economics
Source:Eurekalert

Related biology news :

1. New rearing system may aid sterile insect technique against mosquitoes
2. Mosquitoes -- how we smell is why they bite, research shows
3. International Polar Year conference: From knowledge to action
4. Fruit flies provide new knowledge about uninhibited cell growth
5. A network of knowledge on biodiversity and ecosystem services in Europe
6. Old aerial photos supply new knowledge on glaciers in Greenland
7. Spatial knowledge vs. spatial choice: The hippocampus as conflict detector?
8. Danish researchers release ground-breaking knowledge about calcium pumps in cells
9. New means of safeguarding world fish stocks proven
10. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/3/2016)... Das DOTM (Department ... hat ein 44 Millionen $-Projekt ... einschließlich Personalisierung, Registrierung und IT-Infrastruktur, an Decatur ... Implementierung von Identitätsmanagementlösungen. Zahlreiche renommierte internationale Anbieter ... aber Decatur wurde als konformste und innovativste ...
(Date:5/24/2016)... IRVINE, Calif. , May 24, 2016 Ampronix facilitates superior patient care ... LMD3251MT  3D medical LCD display is the latest premium product recently added to ... ... ... Sony 3d Imaging- LCD Medical Display- Ampronix News ...
(Date:5/3/2016)...  Neurotechnology, a provider of high-precision biometric identification ... Identification System (ABIS) , a complete system for ... can process multiple complex biometric transactions with high ... face or iris biometrics. It leverages the core ... MegaMatcher Accelerator , which have been used in ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... DIEGO , June 27, 2016  Sequenom, Inc. ... committed to enabling healthier lives through the development of ... Court of the United States ... courts that the claims of Sequenom,s U.S. Patent No. ... patent eligibility criteria established by the Supreme Court,s Mayo ...
(Date:6/27/2016)... Diego, CA (PRWEB) , ... June 27, 2016 , ... ... solutions for clinical trials, announced today the Clinical Reach Virtual Patient Encounter ... their care circle with the physician and clinical trial team. , Using the CONSULT ...
(Date:6/27/2016)... Chapel Hill, N.C. (PRWEB) , ... June 27, ... ... of U.S. commercial operations for Amgen, will join the faculty of the ... will serve as adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with ...
(Date:6/27/2016)...   Ginkgo Bioworks , a leading organism ... today awarded as one of the World Economic ... most innovative companies. Ginkgo Bioworks is engineering biology ... world in the nutrition, health and consumer goods ... customers including Fortune 500 companies to design microbes ...
Breaking Biology Technology: