Scientists studying the genetics of bugs think they know how to make them resistant to pesticides. The finding could one day help them out of houses, shops and offices in the U.S.. UU. "We are beginning to understand the genetic makeup of the bugs," said lead researcher Mittapalli Omprakash, assistant professor of entomology at the Center for Agricultural Research and Development Ohio State University in Wooster Ohio."This will be a better understanding of the biology of the insect." It was thought that DNA mutation was resistant to many pesticides bedbug said Mittapalli. However, these findings suggest that many genes have helped the insects to adapt to common pesticides such as pyrethroids. "Resistance to pesticides is more complicated than we thought," said Mittapalli.
It is possible that changes in gene structure, plus the expression of other genes, are responsible for resistance to pesticides, he said. Exposure to pesticides may actually provoke a defensive reaction of the genes, which could lead to a new dominant strain of pesticide-resistant bugs.
This type of evolutionary adaptation occurs throughout the insect kingdom and not limited to bugs, he said. Their findings will not have an immediate impact in the fight against these blood-sucking insects, Mittapalli said, "although the genetic basis of some of these genes could be used in new control strategies." The widespread use of DDT and other long-lasting insecticidal bed bugs helped control after World War II, but during the past decade, the numbers of them have increased more than five hundred percent in North America and elsewhere world, according to background information in the study.
These infestations are costing homeowners and businesses billions of dollars a year and require large amounts of pesticides, many of which are ineffective, scored Mittapalli. For the study, published in the online edition of the January 19 issue of the journal PLoS One, the study team Mittapalli DNA and RNA from laboratory reared bugs susceptible to insecticides and bugs previously exposed to pesticides in an apartment Columbus, Ohio.
The investigation identified expressed sequence tags 35.646, far more than previously known, which are vital for the discovery and sequencing of genes. According Mittapalli, these labels reflect the various genetic capabilities of insects. "These are the RNA molecules that are expressed after their fill of blood," he said.
Jerome Goddard, an expert on bedbugs, said that "one of the big problems is that it seems that we can eliminate very well [the bug]." These insects are resistant to pyrethroid insecticides that most exterminators use. "These scientists are trying to determine which genes are related to resistance to insecticides.
I think that maybe someday we can handle this resistance, "said Goddard, associate professor of medical entomology extension veterinarian at Mississippi State University in Starksville. Missy Henriksen, spokeswoman for the National Association of Pest Control, said any investigation to be done to better understand the bugs in their eradication "is good." The current scourge of bedbugs is based on the ease of travel in the modern world, said Henriksen.
"Bed bugs require humans to survive," he said. Acquire bedbugs and bringing them home is the first way by starting the infestation, he said. The growing resistance to pesticides implies that "a product that could be effective to eliminate bugs Kentucky may not be as effective to eliminate the Ohio," he said.
For now, Henriksen recommended calling a professional to remove the bugs in your home if available. To prevent root initially inspect the furniture or clothes before taking them home, he said. When traveling, inspect your hotel room in search of bugs and do not put the suitcases or in the ground or in bed, he said.
After traveling, wash the clothes they took the trip with hot water or use a hot air dryer to prevent bugs from taking root at home, said Henriksen. Similarly, because the bugs have been found in warehouses, suggested to wash the clothes or sheets prior to use.
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