Navigation Links
Mosquito spray increases toxicity of pyrethroids in creek, study finds

es are leading to pyrethroids finding their way into creeks.

"We don't know yet if the source is a product a homeowner would use, such as lawn insecticides or other outdoor insecticides, or if they may be coming from applications by professional pest controllers. We just know they are somehow finding their way to urban creeks," Weston said.

Weston does not foresee a dramatic change in mosquito control strategies as a result of this study's findings, particularly when weighing the risks of mosquito-borne diseases. "Public health risk still trumps everything, and pyrethrin and PBO exposed to sunlight degrade easily into innocuous substances after a day or two," he said.

However, based upon these study results, Weston said regulators should not only consider the toxicity of individual active ingredients in a product, but also how ingredients may interact with other chemicals in the environment. While a decidedly challenging task, such interactions currently are not considered when risks of pesticides are evaluated by regulators, he noted.

Changes to the instructions on how the pesticides are used may also help, the researchers said. Weston pointed out that authorities advised residents in Sacramento to hose down their outdoor furniture after the mosquito spray applications. That may have actually washed more PBO into the creeks, adding to the PBO coming from the spray that settled directly on the creek surface.

Considering this study's findings, said Weston, authorities may want to consider advising residents to leave their outdoor furniture unused in the sun for a day or two to let the pyrethrin and PBO residue degrade rather than send the runoff into the creeks.


'"/>

Source:University of California - Berkeley


Page: 1 2 3 4

Related biology news :

1. Mosquito study shows new, faster way West Nile can spread
2. Mosquitoes are more attracted to individuals infected with malaria
3. Mosquito genes explain response to climate change
4. Mosquito repellents that emit high-pitched sounds dont prevent bites
5. Canada approves marijuana-based pain spray
6. Flu shot effective against drifted influenza, nasal spray vaccine less so
7. Sexual cooperation: Mating increases longevity in ant queens
8. Global warming increases oyster sensitivity to pollution
9. Prenatal exposure to famine increases risk of schizophrenia
10. Gene increases risk of tuberculosis
11. Male rivalry increases when females at most fertile, say researchers
Post Your Comments:
(Date:9/22/2014)... Additive manufacturing (AM), or 3D printing, has rapidly ... metal components strong enough for structural applications. However, ... as well as quality standards to test the ... technology. Engineers at the University of Pittsburgh,s Swanson ... modeling and simulation (M&S) technology and new qualification ...
(Date:9/22/2014)... Sept. 22, 2014 NXT-ID, Inc. (NASDAQ: ... the growing mobile commerce market, issues the following corporate ... recent funding. Letter from the ... round of funding and joined the NASDAQ to support ... its other biometric and authentication products and services. This strategic ...
(Date:9/21/2014)... warming, are set to rise again in 2014 - reaching ... per cent projected rise in burning fossil fuels is revealed ... UK by researchers at the Tyndall Centre for Climate Change ... of Engineering, Mathematics and Physical Sciences at the University of ... Summit, where world leaders will seek to catalyse action on ...
Breaking Biology News(10 mins):Pitt engineers receive grants to enhance additive manufacturing 2Pitt engineers receive grants to enhance additive manufacturing 3NXT-ID Issues Shareholder Corporate Update 2NXT-ID Issues Shareholder Corporate Update 3NXT-ID Issues Shareholder Corporate Update 4CO2 emissions set to reach new 40 billion ton record high in 2014 2CO2 emissions set to reach new 40 billion ton record high in 2014 3
... modified Atlantic salmon were to escape from captivity they ... the wild, Canadian researchers have found. Their research, published ... implications of GM salmon as they are considered for ... technologies has long been of interest to the aquaculture ...
... Ill. Growing perennial grasses on the least productive farmland ... result in higher overall corn yields, more ethanol output per ... new study . The switch would also slash emissions of ... The study used a computer model of plant growth and ...
... are translated into a perception by complex interactions of ... temporal organization of neuronal activity during decision-making and object ... Max Planck Institute for Biological Cybernetics in Tbingen, in ... Institute for Medical Research in Heidelberg, now investigated how ...
Cached Biology News:First study into GM Atlantic salmon mating reveals danger of escape to wild gene pool 2Switch from corn to grass would raise ethanol output, cut emissions 2Deeper insight in the activity of cortical cells 2Deeper insight in the activity of cortical cells 3
(Date:9/22/2014)... -- Research and Markets ( http://www.researchandmarkets.com/research/94pdq3/global ... "Global Biotechnology Reagents Market 2014-2018" report to ... Biotechnology reagents are chemical compounds or substances ... and examine another substance to provide a test ... prepare, collect, and examine specimens from the human ...
(Date:9/22/2014)... fragments whose job it is to stop bleeding, are ... they can "feel" the physical environment around them, researchers ... respond to surfaces with greater stiffness by increasing their ... platelets and other components of the clotting system, the ... them credit for, in that they are able to ...
(Date:9/22/2014)... generated a new star-shaped molecule made up of interlocking rings, ... , Known as a ,Star of David, molecule, ... quarter of a century and the team,s findings are published ... of two molecular triangles, entwined about each other three times ... each triangle is 114 atoms in length around the perimeter. ...
(Date:9/22/2014)... have discovered a way to create a highly sensitive ... sheets. The imperfections have unique electronic properties that the ... absorbed gas molecules by 300 times. , The study ... Nature Communications . , Amin Salehi- Khojin, asst professor ... Mohammad Asadi, graduate student and Bijandra Kumar, post doc ...
Breaking Biology Technology:Global Biotechnology Reagents Market 2014-2018: Key Vendors are Agilent, BD Biosciences, Bio-Rad, F. Hoffmann-La Roche, Sigma-Aldrich and Thermo Fisher 2Global Biotechnology Reagents Market 2014-2018: Key Vendors are Agilent, BD Biosciences, Bio-Rad, F. Hoffmann-La Roche, Sigma-Aldrich and Thermo Fisher 3Platelets modulate clotting behavior by 'feeling' their surroundings 2Graphene imperfections key to creating hypersensitive 'electronic nose' 2
... MARSEILLE, France, January 12 IPSOGEN SA,(Alternext - FR0010626028 - ... for leukemia and breast cancer has,launched 3 new products during ... portfolio: , , - FusionQuant BCR-ABL IVD ... of chronic myeloid leukemias (CML), is a ...
... on Biotech, Pharmaceutical PatentsNEW YORK, Jan. 12 ... experience in complex patent matters in the life ... as partners in the Intellectual Property Department. Gordon ... section. Both lawyers will be based in the ...
... Jan. 12 /PRNewswire-Asia-FirstCall/ -- BMP Sunstone,Corporation (Nasdaq: ... today announced,that senior executives voluntarily elected certain compensation ... Senior executives rescinded any 2008 bonus,payments, and elected ... option compensation for 2009. In addition, the ...
Cached Biology Technology:In 2008, Ipsogen Reinforced its Leadership in Molecular Diagnosis and Monitoring of Leukemia 2Gordon, Familant Join Baker Botts as Part of Expanded Life Sciences IP Initiative 2Gordon, Familant Join Baker Botts as Part of Expanded Life Sciences IP Initiative 3BMP Sunstone Adopts Voluntary Executive Compensation Restrictions in 2008 and 2009 2
Rabbit polyclonal to Phosphothreonine-Proline / Phosphoserine-Proline ( Abpromise for all tested applications)....
Goat polyclonal to Factor VIII, prediluted ( Abpromise for all tested applications). Antigen: Full length native protein (purified) (Human): Factor VIII from blood. Entrez GeneID: 2157 Sw...
Anti-Mouse IgM Heavy Chain:FITC, Clone LO-MM-9, Monoclonal Antibody...
Mouse monoclonal [002-49] to C1s ( Abpromise for all tested applications). entrezGeneID: 716 SwissProtID: P09871...
Biology Products: