Popular insecticide detected in suburban stream bedsOctober 27, 2005For the first time, researchers have detected high concentrations of a popular insecticide in suburban stream sediments, raising concerns about its effects on aquatic life. Pyrethroids, the active ingredient used in most home and garden insecticides, have been on the market for years. Although the compounds are considered potentially less harmful to humans than other insecticides, surprisingly little information is available about their long-term impact on the environment, according to Donald Weston, Ph.D., an adjunct professor of ecotoxicology at the University of California, Berkeley. The finding, by Weston and others, was published online Oct. 19 by the American Chemical Society's journal, Environmental Science & Technology. A print version of the article is scheduled to appear in the journal's Dec. 1 issue. Nearly all of the sediment samples Weston and his colleagues gathered from streams bordering a Roseville, Calif., neighborhood (a suburb of Sacramento) contained enough pyrethroids to eradicate a small bottom-dwelling crustacean called Hyalella azteca. "These results indicate that monitoring for pyrethroids in urban and suburban streams is overdue, and the public, regulators, and the scientific community should give greater consideration to the potential effects of residential use of pyrethroids on aquatic systems," Weston and his colleagues conclude. American Chemical Society |
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| Related Insecticide Current Events and Insecticide News Articles Scientists of the UGR obtain a bioinsecticide to control the Mediterranean fruit fly UGR News The Mediterranean fruit fly, Ceratitis capitata, is a world plague which represents one of the most serious problems for agriculture. However, the control methods currently present in the market for this plague are ineffective. Getting plants to rid themselves of pesticide residues Scientists in China have discovered that a natural plant hormone, applied to crops, can help plants eliminate residues of certain pesticides. The study is in the current issue of ACS' Journal of Agricultural and Food Chemistry, a bi-weekly publication. Decade-long US project to fight malaria builds thriving African mosquito net industry In a decade-long initiative to protect millions of families from malaria in sub-Saharan Africa, a U.S. government-funded project helped sell 50 million bed nets in seven countries, crafted a voucher system to allow the poor to receive them for free or partial cost, and created enough incentives for private companies that they invested $88 million to expand their businesses. ISU researchers study insecticide-free method for control of soybean aphids Two Iowa State University researchers are examining a new method of controlling soybean aphids without the use of chemical pesticides. Getting plants to rid themselves of pesticide residues Scientists in China are reporting the "intriguing" discovery that a natural plant hormone, applied to crops, can help plants eliminate residues of certain pesticides. UNC study: Insecticide-treated bed nets reduce infant deaths in Democratic Republic of Congo Giving insecticide-treated bed nets to nearly 18,000 mothers at prenatal clinics in the Democratic Republic of Congo prevented an estimated 414 infant deaths from malaria, a study by University of North Carolina at Chapel Hill researchers concludes. Pitt research suggests EPA pesticide exposure test too short, overlooks long term effects The four-day testing period the U.S. Environmental Protection Agency (EPA) commonly uses to determine safe levels of pesticide exposure for humans and animals could fail to account for the toxins' long-term effects, University of Pittsburgh researchers report in the September edition of Environmental Toxicology and Chemistry. 'Killer spices' provide eco-friendly pesticides for organic fruits and veggies Mention rosemary, thyme, clove, and mint and most people think of a delicious meal. Think bigger-acres bigger. Study finds higher pathogen loads in collapsed honeybee colonies Honeybees in colonies affected by colony collapse disorder (CCD) have higher levels of pathogens and are co-infected with a greater number of pathogens than their non-CCD counterparts, but no individual pathogen can be singled out as the cause of CCD. See no weevil: researcher tracks rice bugs to help farmers, consumers When there's something bugging rice farmers, a large segment of the world's population is likely to find out. More Insecticide Current Events and Insecticide News Articles |
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