Tag: "insecticide" at biology news
Malaria -- Effective insecticide-repellent synergy against mosquito vectors
...s tested two mixtures composed of a non-pyrethroid insecticide
of the organophosphate family, combined with eithe...quitoes. However, only the association between the insecticide
and the standard repellent produced a synergistic effect that inhibited the mosquito from taking its...
Key to tackling malaria may lie in bed nets for adults and older children
...rty. Free provision of at least three long lasting insecticide
treated nets which last for five years to every household provides real chance for the people of Africa to loosen the tight grip of malaria shackles upon them."...
New study finds genetically engineered crops could play a role in sustainable agriculture
...modification, which causes the plant to produce an insecticide
internally, can have an environmental benefit because large-scale insecticide
spraying can be avoided. Organisms such as ladybird beetles, earthworms, and bees in locales with Bt...
Vaccine hope for malaria
...spread of drug resistance in people and increasing insecticide
resistance in mosquitoes. Until now there has been no reliable animal model for human malaria. Mice do not get sick when infected with the blood-borne parasite that causes malaria in people. And the immune system of mice shows a different response ...
Tips from the Journals of the American Society for Microbiology
... humans through mosquito bites. Emerging drug and insecticide
resistance emphasize the urgent need for effective new vaccines. In the study researchers compared immune responses of mice preexposed to uninfected mosquito bites followed by bites from mosquitoes infected with the malaria parasite, Plasmodium spp...
Whitefly spreads emerging plant viruses
... control partly because of its tendency to develop insecticide
resistance. "As the population levels of the whitefly B. tabaci continue to remain robust, new species of plant viruses will continue to emerge and cause damaging diseases in food and fiber crops," Brown said. Early virus and vector detection, ...
The LouseBuster kills
...iring repeat treatment. Many parents dislike using insecticide
shampoos on children, and lice rapidly are evolving resistance to chemicals. Louse combs are used to remove the eggs or nits, an effective procedure, but one that requires many hours over several days. "Most parents do not have the time or ...
'LouseBuster' instrument shown to kill head lice
...iring repeat treatment. Many parents dislike using insecticide
shampoos on children, and lice rapidly are evolving resistance to chemicals....
There's much more to bees than honey
...r in groups of detoxifying enzymes associated with insecticide
resistance in other species. CSIRO's Dr Saul Cunningham and colleagues in Germany, France and the United States studied crop pollination by the European honey bee and their paper, 'Importance of pollinators in changing landscapes for world crops', is...
Pollinators help one-third of the world's food crop production
...rpenter bees, are hardly available because of high insecticide
use in the agricultural fields and the destruction of the natural habitats," said lead author Klein. Klein said that in the cities of Brazil, the high prices for fruits and vegetables are pushing people to turn to less healthy alternatives, includi...
Most widely used organic pesticide requires help to kill
...ngiensis was developed as a commercially important insecticide
in the 1950s. It is by far the most widely used natural agent to control important insect pests, and the genes that make Bt's toxic proteins have been engineered into numerous crop plants. Transgenic crops using the bacterium's genes are the most pre...
Mosquito spray increases toxicity of pyrethroids in creek, study finds
...trol authorities took the rare step of applying an insecticide
by air in August 2005. UC Berkeley researchers poi... hours after the second night's application. The insecticide
contained a mixture of pyrethrin, a natural pesticide found in a type of chrysanthemum, and piperony...
ACS News Service Weekly PressPac -- July 19, 2006
...t and if an environmental assessment indicates the insecticide
will be safe and effective, C&EN senior editor Bette Hileman explains in the article. The decision comes at a time when new studies suggest that prenatal exposure to DDT may retard child development and lead to preterm birth. In addition, there is c...
ACS News Service weekly press package - May 30, 2006
...onventional mosquito netting needs a fresh dose of insecticide
every few months -- a difficult proposition for po... Olyset polyethylene nets release their permethrin insecticide
for up to seven years. A polyester malaria net produced by the Swiss Vestergaard-Frandsen group last...
Iraq's marshes show progress toward recovery
...e water, to identify sites of toxins, and to study insecticide
use by local fishermen....
Biotech cotton provides same yield with fewer pesticides
...altered to produce Bt toxin, a naturally occurring insecticide
that kills pink bollworm, a major pest of cotton. ...similar across cotton types because the additional insecticide
applications on the non-Bt fields cut down on the damage from whiteflies and western tarnished plant...
Pesticides in the nation's streams and ground water
... the frequently detected pesticides, including the insecticide
diazinon and the herbicides alachlor and cyanazine, are declining. USGS has worked closely with the U.S. Environmental Protection Agency (EPA) during the 10-year study. EPA uses the data extensively in their exposure and risk assessments for regula...
Pesticide combinations imperil frogs, probably contribute to amphibian decline
... time it took tadpoles to start metamorphosis. The insecticide
tebupirimphos caused a small but statistically significant decrease in the size and weight of mature frogs. Mixtures, however, had a much stronger effect. All nine compounds together at 0.1 ppb - one of the lower concentrations measured in the field ...
Finally, male water fleas exposed
... hormone affects a broad range of crustaceans, any insecticide
that mimics MF also may affect a large number of species in freshwater communities," said Taylor. "In other words, MF-based insecticides are not insect-specific, and if you affect a non-target species that's a major player in these freshwater food w...
Recycled or revamped therapeutics find novel anti-cancer applications
...or against prostate cancer. A drug developed as an insecticide
now helping scientists to understand the microtubu...at a form of a compound originally developed as an insecticide
significantly reduces the growth of a specific class of pancreatic tumors. According to their result...