Insecticide in Biological News

Study shows single insecticide application can kill 3 cockroach generations

... WEST LAFAYETTE, Ind. - One dose of an insecticide can kill three generations of cockroaches as they ... assistant professor of entomology. Passing the insecticide from one cockroach to the next is called ... capabilities. In the first transfer of the insecticide from a dying adult to the youngest stage nymphs, ...

Research required urgently to control planthopper pests

... pest management (IPM), reducing unnecessary insecticide use, and breeding BPH-resistant rice ... China, Korea, Japan, and Vietnam. Increasing insecticide resistance is also a concern. "One of the key ... for host-plant resistance to planthoppers insecticide resistance Farmers' perceptions in planthopper ...

Insecticide combo delivers knockout punch

... containing a plant protein and a common insecticide may be more lethal to crop pests than either ... than the sum of mortality rates when only one insecticide was used." One of those insecticides, Bt, is ... of Agriculture studied a unique plant-based insecticide known as Mir1-CP. Their goal is to see if ...

New screening strategy for detection of chagas disease in children

... T. cruzi through vector control measures (such as insecticide spraying), rather than on active case detection ... infected by the time their households received insecticide application. They also found that households with ... that data easily collected during an ongoing insecticide spraying campaign in Arequipa could be used to ...

Restoring a natural root signal helps to fight a major corn pest

... and Food Safety (BVL) establishes safety zones and enacts the use of the insecticide chlothianidine. In spring 2008 this insecticide was directly applied on the seeds, but during sowing it was ...

Controlling cucumber beetles organically

... buckwheat. Other treatments included use of rowcovers and the organic insecticide PyGanic. The separate Al-plastic and companion plant groups increased ... in any other. Then, in 2004, the study was repeated, but this time the insecticide group was replaced by a combination of Al-plastic and companion plants. ...

Termite insecticide a potent greenhouse gas

... Irvine, Calif., Jan. 21, 2009 An insecticide used to fumigate termite-infested buildings is a strong greenhouse gas ... not regulated, though officials do consider it a toxic contaminant. The insecticide is pumped into a tent that covers a termite-infested structure. When the ...

Researchers put the bite on mosquitoes

... molecules aimed at other mosquito species--could be developed into an insecticide and sprayed in places where mosquitoes congregate, such as around water ... they would still become infected. However, the mosquito would ingest the insecticide along with the blood, causing her to bear fewer young and possibly die ...

MIT Holding, Georgia Southern University, and MEVLABS successfully test the PROVECTOR

... increases in drug resistance of the parasite, as well as widespread insecticide resistance in mosquitoes, cause these current methods to be less ... of drug-resistant malaria, absence of a vaccine for dengue, population of insecticide resistant mosquitoes, and the current cost of malaria and dengue control. ...

Researchers help develop pest-resistant eggplant for South Asia

... cotton in India since 2002. The engineered eggplant expresses a natural insecticide derived from the bacteria Bacillus thuringiensis (Bt), making it ... eggplant varieties. It is estimated that the Bt eggplant will reduce insecticide use by 30 percent while doubling the yield of marketable fruit (although ...

'Honey bee health' of concern at Western Apicultural Society conference

... Steve Sheppard of Washington State University, Pullman, will cover ""Washington State Honey Bee Health Program: Breeding, Diagnostics and insecticide Tolerance." "Jerry's likely to describe and display his hand-held, acoustic monitoring device that 'listens' to the health of a honey bee colony," ...

IVCC and Syngenta start project for novel insecticidal active ingredient for malaria control

... candidates from their collection. IVCC has collected together an Expert Scientific Advisory Committee which represents a "Who's Who" of the world of insecticide development and this group will review the data generated by the screening process with Syngenta experts to identify the best candidates that will be ...

NIH funds development of resistance-breaking insecticides to reduce malaria transmission

... insecticides to reduce malaria transmission. At present, the first line of defense against the malaria mosquito in sub-Saharan African is insecticide treated nets (ITNs). However, growing resistance to the pyrethroid insecticides used on the nets threatens to render this protection ineffective. The ...

Exposure to insecticide may play role in obesity epidemic among some women

... EAST LANSING, Mich. Prenatal exposure to an insecticide commonly used up until the 1970s may play a role in the obesity epidemic in women, according to a new study involving several Michigan State ...

Pitt research finds that low concentrations of pesticides can become toxic mixture

... increased. Relyea published a paper in the Oct. 1 edition of Ecological Applications reporting that gradual amounts of malathionthe most popular insecticide in the United Statesthat were too small to directly kill developing leopard frog tadpoles instead sparked a biological chain of events that deprived ...

Using live fish, new tool a sentinel for environmental contamination

... to act upon organisms in different ways: atrazine, cadmium, pentachlorophenol - an antifungal - and cyanide. It didn't register low levels of the insecticide malathion, possibly because fathead minnow embryos require more time to elapse for effects to become evident, Sanchez said. Toxins can slow ...

Midge-hunting scientists tackle spread of devastating bluetongue virus

... can we do to put a barrier between our livestock and these midges?" We will use our models to advise on best practice for measures such as stabling, insecticide use and vaccination, to control the spread of bluetongue virus." The team has developed two methods to monitor the flying and biting behaviour of ...

Mate choice in plants

... breeding systems more precisely to achieve greater yields and to provide built-in safeguards for preventing inadvertent pollination by and in pest or insecticide resistant crops or those bred to produce drugs or industrial materials. ...

Penguins exposed to DDT from melting glaciers

... Decades after most countries stopped using the insecticide DDT, frozen stores of the chemical are now dripping out of melting Antarctic glaciers - and into penguins. A marine biologist in the US, who sampled ...

Ayurvedic nightshade deadly for dengue mosquito

... The authors found that S. villosum was particularly effective at eliminating S. aegypti larvae. Although it was not as potent as a chemical insecticide such as Malathion, the authors suggest that plant extracts from S. villosum have the potential for use in stagnant water where the mosquitoes breed. ...

Netting mosquitoes to prevent malaria

... Anopheles gambiae, the mosquito species that is responsible for transmitting malaria to humans in Africa, hasn't demonstrated any resistance to the insecticide used in the bed nets. "It appears that the Anopheles gambiae population declines and doesn't recover," Walker said. "So the parasites that cause ...

100 percent of people carry at least 1 type of pesticide

... as fungicide and currently released by industrial processes; PCBs: compounds related to industrial processes; and Hexaclorociclohexano, used as an insecticide and currently used in scabies and pediculosis treatment. The study carried out by the University of Granada concluded that 100% of subjects ...

Relevance of rice research recognized

... recently created Environmental Agenda puts in place environmental policies and safeguards that underpin the Institutes research. For example, insecticide use on the IRRI farm has fallen more than 95% compared with levels in the mid-1990s, and campaigns to optimize pesticide use in several countries ...

Further development of Water Framework Directive necessary

... are often substances that have been measured for a long time, but which, in some cases, are playing an increasingly limited role. "For instance, the insecticide DDT is on the list even though it was banned in most Western industrialised nations as far back as the 1970s and is therefore no longer used. From ...

The proof is in the tree bark

... than 175 types of flame retardants, it was developed as a substitute for the banned, highly chlorinated flame retardant Dechlorane (also known as the insecticide Mirex). "However, the substitute might not always be as safe as hoped," Qui and Hites write. They point out that Dechlorane Plus is present in ...

Entomological Society announces 2007 award winners

... to the needs of vegetable producers in the North Central Region. He recently led a multi-state effort to better understand migratory behavior and insecticide resistance in Helicoverpa zea, an effort that combines traditional research with data from multiple cooperators, to assist growers and IPM field ...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

... authorities took the rare step of applying an insecticide by air in August 2005. UC Berkeley researchers ... after the second night's application. The insecticide contained a mixture of pyrethrin, a natural ... was not the aquatic toxicity of the pyrethrin insecticide in the mosquito spray, but the fact that the ...

Novel compounds show promise as safer, more potent insecticides

... synthetic compounds designed to activate a novel insecticide target called the ryanodine receptor, may also help tackle the growing problem of insecticide resistance, the researchers say. They described ... that activate the ryanodine receptor. The insecticide is highly effective against many different ...

New study finds genetically engineered crops could play a role in sustainable agriculture

... that this particular 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, ...

Biotech cotton provides same yield with fewer pesticides

... has been genetically altered to produce Bt toxin, a naturally occurring insecticide that kills pink bollworm, a major pest of cotton. Bt cotton has been ... that yields were similar across cotton types because the additional insecticide applications on the non-Bt fields cut down on the damage from whiteflies ...

University of Nevada, Reno research team discovers hormone that causes malaria mosquito to urinate

... at a small company in Palo Alto, Calif. that developed methoprene, an insecticide that halts the maturation of insect larvae to adults. Methoprene, ... pest's ability to devastate crops. "It's not a great way to sell an insecticide to a farmer," Schooley said. "Most money in pesticide development is in ...

WHO Warns Of Increased Risk Of Vector-borne Diseases In Tsunami-affected Areas

... the strengthening of vector surveillance measures, while family-sized insecticide impregnated bed-nets have been distributed to families living in ... Aedes aegypti mosquito (a day-time biting mosquito, hence the utility of insecticide treated bed-nets is very limited as a specific prevention tool), while ...

Spider Venom Could Yield Eco-Friendly Insecticides

... of species within a genus. The toxin-enhanced virus would act like a magic insecticide bullet, targeting only cotton bollworms, for example, and leaving bees and ... pests. As researchers inventory more kinds of venom and uncover insecticide leads, they may be able to target insects that transmit new and emerging ...

Secret of worm's poison pill box protein could produce new natural insecticide

... have now been able to reveal the shape of the protein XptA1 and discovered a number of properties that make it a particularly efficient natural insecticide and possible alternative to some commercial insecticides that are facing increased resistance in the insect populations they target. The ...

Whitefly spreads emerging plant viruses

... and its ability to exploit agricultural systems," Brown said. B. tabaci has proven difficult to 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 ...

Most widely used organic pesticide requires help to kill

... "This is a mechanism that was not previously known." First discovered in 1911, Bacillus thuringiensis 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 ...

Chemical in many air fresheners may reduce lung function

... to mothballs. It is typically used primarily as a space deodorant in products such as room deodorizers, urinal and toilet bowl blocks, and as an insecticide fumigant for moth control. "Because people spend so much time indoors where these products are used, it's important that we understand the ...

Iraq's marshes show progress toward recovery

... not being done, say Richardson and Hussain--to determine how the marshes and agriculture can share water, to identify sites of toxins, and to study insecticide use by local fishermen. ...

Pesticides in the nation's streams and ground water

... strong relations between the occurrence of pesticides and their use, and point out that some of 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) ...