HOME >> BIOLOGY >> NEWS
Insecticide resistance in mosquitoes being studied

HOUSTON An outbreak of St. Louis or West Nile encephalitis is hardly the time for mosquito control officials to find out their pesticides aren't working. Avoiding that problem is the focus of a cooperative project undertaken this fall.

Texas Agricultural Experiment Station, Texas Cooperative Extension and the Mosquito Control Division of the Harris County Public Health and Environmental Services Department are working together to study insecticide resistance in mosquitoes and develop a strategy to overcome it.

Larvae of Culex quinquefasciatus, or the southern house mosquito, are being collected in the Houston area and raised in laboratories at Texas A&M University. Adult mosquitoes are then tested to see whether genetic mutations have made them resistant to the pyrethroid pesticides used in the district, said Dr. Patricia Pietrantonio, Experiment Station entomologist.

The southern house mosquito is the primary vector for viruses causing St. Louis encephalitis and West Nile encephalitis in Texas urban areas.

"For diseases like St. Louis encephalitis and West Nile encephalitis, the only control is mosquito control," said Dr. Jim Olson, Experiment Station entomologist. "There are no vaccines. You can only treat the symptoms in the hospital."

These two diseases may be fatal to humans, with West Nile being fatal to other mammals as well as birds.

Fragments of mosquito genes will be cloned and sequenced to determine what mutations, if any, have occurred, Pietrantonio said.

"If mutations have taken place," she said, "the insect will no longer die" when treated with insecticides.

The project is similar to one she completed in the Houston area in 1998 involving the organophosphate insecticide, Malathion. Pietrantonio found in some areas the southern house mosquito was resistant to the insecticide Malathion being used. The district switched to pyrethroid pesticides to contro
'"/>

Contact: Edith Chenault
e-chenault1@tamu.edu
979-845-2886
Texas A&M University - Agricultural Communications
10-Nov-2004


Page: 1 2

Related biology news :

1. Support for chromosomal theory of cancer found in cancers development of drug resistance
2. 454 sequencing identifies HIV drug resistance at early stage
3. Ultra deep sequencing identifies HIV drug resistance at early stage
4. Cytokine resistance contributes to pathology of type 2 diabetes
5. Largest synthetic gene ever built offers insights into anti-malarial drug resistance
6. WHO data confirms low level of resistance to Tamiflu
7. Unstable leukemia stem cells may predispose patients to drug resistance
8. Gene profiling predicts resistance to breast cancer drug Herceptin
9. IDIBAPS participates in European Network on antibiotic resistances and hospital infections
10. What recognizes what in plant disease resistance?
11. Antiretroviral resistance testing in HIV infected patients improves health and saves costs

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/31/2020)... ... July 30, 2020 , ... BioFactura, Inc. ... awarded by the Joint Science & Technology Office—Chemical and Biological Defense (JSTO-CBD) of ... optimize, and scale-up a highly efficient mammalian cell culture-based bioprocess suitable to meet ...
(Date:7/18/2020)... ... July 17, 2020 , ... Commercial launch readiness is a critical stage in ... COVID cure or vaccine, the global economic downturn will only increase price pressures overall ... away and capturing full value from every product launch is critical. However, history shows ...
(Date:7/2/2020)... ... 01, 2020 , ... AltruBio Inc. http://www.altrubio.com , a ... for the treatment of steroid-refractory acute graft-versus-host disease (SR-aGVHD), at European Hematology Association ... of the Fred Hutchinson Cancer Research Center, this single-arm, open-label Phase 1 single ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 30, 2020 , ... ... industry, today announced the release of its signature product called Beacon - ... (MSLs) and other field medical professionals. , Beacon helps MSLs streamline ...
(Date:7/18/2020)... ... July 17, 2020 , ... dicentra , ... sciences and food industries, is pleased to announce that Charles Galea has joined ... Development. , Charles is an accomplished and results-driven sales executive with over 10 ...
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now offering ... to 200 million stem cells. Depending on the patient's condition, treatment may be offered ... will die having some form of Alzheimers dementia, and the incidence continues to increase ...
(Date:6/28/2020)... ... June 25, 2020 , ... The Indoor Lab, a leading provider of sensor ... of all types to ensure cleanliness, distancing and occupancy with its patent pending WipeAway™ ... enabled business will provide a health performance index system that scores all aspects of ...
Breaking Biology Technology:
Cached News: