Entries in Pesticide (2)


Scientists Study Bedbug Genome for Weaknesses

Photo Courtesy - ABC News(COLUMBUS, Ohio) -- As the war on bedbugs wears on, scientists try to understand the invasive pests so they can kill the suckers.  Now, Ohio State University researchers have conducted the first genetic study to identify pesticide-resistant genes the bugs carry.  It may lead to new ways of controlling the bugs in the future.

"Right now, these studies are still preliminary and only scratching the surface of the bedbug genome," said Omprakash Mittapalli, Ph.D., assistant professor of entomology at Ohio Agricultural and Development Center and corresponding author of the study.  "But bedbugs could be a lot more complicated than previously thought."

Mittapalli and his team analyzed laboratory-reared bedbugs vulnerable to insecticides, and compared them to pesticide-exposed bedbugs found in a local apartment in 2009 and 2010.  Researchers identified more than 35,000 expressed sequence tags, tiny portions of a gene that can be used to help identify unknown genes and map their positions within the genome.

"The genetic bases for these genes could enable us to formulate newer development strategies that may be more effective than what we have right now," said Mittapalli.  "But a lot more studies need to be done, not only to identify candidate genes, but also to get a better understanding of the biology of the insect."

The study, published in the journal PLoS ONE, found that there were differences in a gene, known as CYP9, between the bedbugs exposed to pesticides and the non-exposed bedbugs.  In other words, scientists say bedbugs may be genetically resistant to the pesticides currently used to get rid of them.

"If we can suppress the expression of that gene and see if bedbugs are still able to overcome the pesticide, then we'll be able to see that that gene is involved in overcoming pesticide resistance," said Mittapalli.

Copyright 2011 ABC News Radio


EPA Creates Pesticide Database To Aid Consumers In Bed Bug Control

Photo Courtesy -- Getty Images(WASHINGTON) -- On Wednesday, the U.S. Environmental Protection Agency (EPA), announced its creation of a database that will assist consumers in choosing an "EPA-registered bed bug product that meets their needs and is safe if properly used according to label instructions."

Steve Owens, assistant administrator for EPA's Office of Chemical Safety and Pollution Prevention, urged consumers to use the database to ensure a safer way of controlling bed bugs while also taking preventative measures such as "reducing clutter, covering mattresses, vacuuming and other methods."

Currently there are more than 300 different products for bed bug control registered by EPA.

Copyright 2010 ABC News Radio

ABC News Radio