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

to PBO in creek waters was unexpected.

"In this instance, it appeared the biggest concern was not the aquatic toxicity of the pyrethrin insecticide in the mosquito spray, but the fact that the non-toxic synergist actually synergized the 'wrong' thing - pyrethroid pesticides that were already in the creek sediments," said Weston.

"This is the first field study to show an interaction of PBO with something in the environment, so even a two-fold increase is a pretty major finding," added study co-author Michael Lydy, associate professor of zoology at Southern Illinois University.

Other co-authors of the study are Erin Amweg, a UC Berkeley post-doctoral researcher in integrative biology; Abdou Mekebri, a chemist at the California Department of Fish and Game; and R. Scott Ogle, a toxicologist at Pacific EcoRisk.

Pyrethroids have risen to dominance as organophosphate pesticides, including diazinon and chlorpyrifos, are phased out due to concerns over their effects on the human nervous system. (Organophosphates have been largely eliminated from residential use, but are still widely used on agricultural crops.) There are more than 1,200 pyrethroid-containing products on the market in California, ranging from cans of household bug killer to commercial pest control sprays.

Prior studies by Weston and colleagues have shown that pyrethroids exist in agricultural and urban streams at levels toxic to sensitive aquatic life. General urban pesticide use, such as applying insecticides on lawns, gardens and around the perimeter of homes, is likely responsible for the bulk of the pyrethroids found in the sediment of urban streams, the researchers said.

Based in part upon these prior findings, the California Department of Pesticide Regulation (DPR) announced earlier this month that it will begin re-evaluating some 600 pyrethroid-containing products. The re-evaluation process will likely help determine what urban pesticide use practic
'"/>

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:7/30/2014)... 30, 2014 NexID Biometrics , ... detection solutions for the biometric authentication industry, has ... revolutionizing online authentication with standards for strong authentication. ... "The decision to join FIDO Alliance stems from ... in use. We believe the FIDO Alliance is ...
(Date:7/30/2014)... help Americans make better decisions about what they eat, ... proposed significant changes to the Nutrition Facts label found ... article in Chemical & Engineering News (C&EN), ... explains the suggested updates and the fight that ... C&EN, points out that while the Nutrition Facts label ...
(Date:7/30/2014)... has been awarded the Scientific Committee on Antarctic ... Research. , SCAR, an inter-disciplinary international science body, ... research in the Antarctic region, and on the ... system. The organisation also provides scientific advice about ... governing the region. , The medal is open ...
Breaking Biology News(10 mins):NexID Biometrics Joins the FIDO Alliance 2
... ARBOR, Mich. It,s a leading cause of death, but no ... major source of health care costs, adding days or weeks to ... But no one fully understands how best to fight it. ... and it,s a major part of the very serious illness called ...
... well known that plants growing under unfavourable conditions are generally ... estimated that in the US, abiotic stress reduces the yield ... example of the effect of stress in this case, ... trees, in which every aspect of their stature, including height, ...
... be standard equipment for most new diesel trucks, buses, ... United States after Jan. 1, 2010. An automotive grade ... stream to "scrub" nitrogen oxide (NOx) from the diesel ... to smog, which causes asthma and respiratory and heart ...
Cached Biology News:Battling bacteria in the blood: Researchers tackle deadly infections 2Battling bacteria in the blood: Researchers tackle deadly infections 3Battling bacteria in the blood: Researchers tackle deadly infections 4The bonsai effect: Wounded plants make jasmonates, inhibiting cell division, stunting growth 2Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 2Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 3Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 4Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 5Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 6Urea tanks on diesel trucks -- that's the law in the United States starting in 2010 7
(Date:7/31/2014)... The global market for molecular diagnostics ... according to a new study by Grand View Research, ... the subsequent introduction of advanced cancer diagnostic technologies are ... the next six years. Moreover, the growing global base ... coupled with disease triggering lifestyle habits such as smoking ...
(Date:7/31/2014)... Miami, Fla. (PRWEB) July 31, 2014 The ... for distribution of its monthly news magazine, Kidney Cancer News. ... have a presence on a website maintained by an international ... noted an immediate increase in viewers.” , This month’s program ... of kidney tumors analyzed in a recent study. Kidney ...
(Date:7/30/2014)... 30, 2014 W. R. Grace ... of the REVELERIS® Prep purification system , ... chromatographers, and other researchers to perform both flash ... unit. , With the REVELERIS® Prep purification system, ... chromatography modes with a simple touch of the ...
(Date:7/30/2014)... 2014 While administrative claims and ... research for a relatively long period of time, ... the use of these ‘big data’ for comparisons ... combining today’s powerful computer technology with the plethora ... data’ holds significant promise for identifying optimal interventions ...
Breaking Biology Technology:Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 2Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 3Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 4Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 5Grace Launches New REVELERIS® Prep Purification System 2Leveraging ‘Big Data’ - Methodological Considerations in Health Services Research, New Webinar Hosted by Xtalks 2
... great promise for applications from microelectronics to power lines ... knew magnets could stop those electrons in their tracks? ... been studying the Aharonov-Bohm effect -- the interaction between ... it relates to carbon nanotubes. While doing so, ...
... 8 Bion Environmental Technologies, Inc. (OTC Bulletin Board: ... on July 14 , hosted by SUNY Oswego ... Center auditorium.  The forum, sought by Bion along with Operation ... Bion,s proposed beef cattle production facility that would be integrated ...
... ... suggestions for effective interactive healthcare marketing at Digital Pharma West. , ... (PRWEB) -- Viscira™, a leading provider ... presentation entitled, “Maximizing Return on Interactive” at the Digital Pharma West (DPW) conference last ...
Cached Biology Technology:Magnets trump metallics 2Bion Confirms Participation in SUNY Oswego's Forum 2Bion Confirms Participation in SUNY Oswego's Forum 3Bion Confirms Participation in SUNY Oswego's Forum 4Viscira Delivers Key Presentation to Pharmaceutical Marketing Professionals at Leading Digital Industry Conference 2
Anti-Goat HRP-DAB Cell & Tissue Staining Kit...
... The Light Diagnostics Cytomegalovirus (CMV) pp65 ... the qualitative identification of lower matrix protein ... leukocytes. Kit Components: ... 5122) One bottle containing 220 mL of ...
... The CultureWell cell culture systems ... preparing cultured cells for staining ... medical-grade silicone gaskets preassembled with ... culture plates. The entire system ...
nuclear cap binding protein subunit 1, 80kDa, mRNA...
Biology Products: