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:3/31/2016)... RATON, Florida , March 31, 2016 ... LEGX ) ("LegacyXChange" or the "Company") ... for potential users of its soon to be launched ... video ( https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide ... the use of DNA technology to an industry that ...
(Date:3/29/2016)... 2016 LegacyXChange, Inc. (OTC: ... SelectaDNA/CSI Protect are pleased to announce our successful effort ... variety of writing instruments, ensuring athletes signatures against counterfeiting ... from athletes on LegacyXChange will be assured of ongoing ... Bill Bollander , CEO states, "By ...
(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
Breaking Biology News(10 mins):
(Date:5/19/2016)... May 19, 2016 ... (OTC PINK: RGBPP) announced today initiation of a ... cord blood based cancer immunotherapeutic product leveraging its ... Regen described a generation of cord blood derived ... gene silencing.  The product in development will be ...
(Date:5/18/2016)... ... , ... STACS DNA Inc., the sample tracking software company, today announced that ... processing to help them save time and reduce errors. , Sexual Assault kits are ... and victims informed of results. Due to a previous lack of tools, many forensic ...
(Date:5/17/2016)... ... May 17, 2016 , ... ... waste reduction applications, announced today it will be showcasing ManureMagicâ„¢ at booth V1061 ... was featured in the Wall Street Journal last year and more recently made ...
(Date:5/17/2016)... NC (PRWEB) , ... May 17, 2016 , ... A ... between kidney and bladder cancer and mesothelioma in families. Surviving Mesothelioma has just posted ... , Although people with a family member with bladder or kidney cancer seem to ...
Breaking Biology Technology: