Tag: "insects" at biology news

Research team unlocks secrets of the firefly flash

...lies begins. While these remarkable bioluminescent insects have inspired poets and delighted children for centuries, it has been a long-standing mystery as to exactly how they manage to blink their lights so precisely. An interdisciplinary team of researchers from Tufts University and Brigham and Women's H...

Eaten as food, African orchids threatened by illegal trade

...mble female insects, an adaptation that turns male insects into pollinators. In the U.S. alone the orchid trade is now a multi-billion dollar industry. Though rural Africans have consumed orchids for hundreds of years, the recent popularization of eating the plants in Zambia -- especially in urban centers -...

UCSD biologists identify genetic mechanism conferring resistance to 'Bt toxins'

...played an important role in Africa in controlling insects that carry disease and are now being used in genet...strains of roundworms and insects. "There are insects in the wild now that contain gene variants that allow them to be resistant to Bt toxins, but fortun...

Clemson-led team makes breakthrough in controlling Bt resistance in pests

...budworms could be made Bt-resistant by feeding the insects a high-dose diet of the toxin. Federal regulators acted. They required non-Bt cotton to be planted alongside of Bt cotton, diminishing the chances of budworms taking a Bt-rich diet in the fields. The question was how to monitor the situation, catchi...

Of gallflies, bees, mosquitoes, and butterflies: researchers to discuss insects

...s is very low, however, and though many biocontrol insects successfully establish and spread, they often fail... Notonecta maculata, which belongs to the group of insects commonly known as backswimmers. The other species, a midge known as Chironomus riparius, is far less...

Component of fly saliva makes promising Leishmaniasis vaccine

...rs studying how components of saliva not only help insects and ticks obtain their blood meals but also modula...have to be specifically engineered for the problem insects of each region." ...

Genetic secrets of metal-eating plants uncovered

...an, but studies indicate that they do this to stop insects and other creatures from eating them. Just as people hate to bite down on a piece of aluminum foil, insects tend to avoid eating plants that taste like metal. "You can imagine if you're a bug and you bite dow...

Forestalling pesticide, antibiotic resistance possible, theory predicts

...ill": A few years after a pesticide is introduced, insects develop resistance to it. So another chemical is ...pesticide. Scientists are able to create resistant insects in the laboratory by using a process known as EMS (ethylmethylsulfanate) mutagenesis. Using the comp...

Catnip repels mosquitoes more effectively than DEET

...tract them all. A rating of zero means half of the insects would stay on the treated side and half on the untreated side. In Petersons tests, catnip ranged from +49 percent to +59 percent at high doses, and +39 percent to +53 percent at low doses. By comparison, at the same doses, DEETs repellency was only a...

Fight between GMOS and the bugs they repel may not be over

... so far there has been no documented evidence that insects have developed resistance to crops engineered to r...hould be trying to preserve a sufficient number of insects that are susceptible to the GMO crops. These bugs that normally would be killed need to be allowed ...

University of Ulster spearheads giant leap forward in medicine

...unning Frog produces a venom which paralyses giant insects which prey on it. Peptides from the venom could be incorporated into food crops or crops like cotton to prevent insect attack without the use of pesticides. A Tree Frog from Australia has peptides which are effective in tackling conditions which are ...

California gnatcatcher: Umbrella species failure?

...the California gnatcatcher fails to preserve three insects in southern California's coastal sage scrub. "The...l sage scrub patches in San Diego County for three insects that depend on this habitat. These insects (two butterflies and a moth) lay their eggs only on a buc...

A sticky situation for ants and bees: UMass biologist looks at how these insects adhere to various surfaces

.... The study, which included taking videotapes of insects scurrying along glass plates, focused specifically...nd Asian weaver ants. The adhesive organs in these insects are quite different from those of animals such as geckos and most other insects, Brainerd notes. "Ge...

UC Berkeley expert on insect flight receives prestigious MacArthur 'genius' award

... the world's experts on the aerodynamics of flying insects was named a MacArthur "genius" Fellow today (Oct. ...the nerve and muscle connections that allow flying insects to maneuver so expertly that they are among the most versatile and sophisticated of all flying anima...

Plants, insects play cat and mouse game

Plants and insects play a far more intricate game than we suspect, sa...essor Anurag Agrawal suggests that both plants and insects have the inherent ability to adjust their behaviour - going so far as to alter their physiology and ...

Lilly Endowment grants almost $26 million to Purdue Discovery Park

... focus on identifying genes and proteins that make insects resistant to pesticides, learning the gene sequences of insects important for agriculture and identifying critical proteins involved in aggressive stinging behavior...

New small gene class found by Dartmouth geneticists may exert far reaching influence on cell behavior

...hroughout the evolutionary treefrom sea urchins to insects and mice, to humans. Several of the small RNAs identified in the current work are also evolutionarily ancient. Among these is mir-1, found in worms, flies and humans, which appears relatively specific to heart tissue. Ambros speculates that mir-1 ...

View of forest insects changing from pests to partners

... journal Conservation Biology In Practice. Native insects work to thin trees, control crowding, reduce stres...mology. "The traditional view still is that forest insects are destructive, but we need a revolution in this way of thinking. The fact is we will never resolve...

Flower chemicals attract some insects but deter others with toxic warning

ITHACA, N.Y. -- When some insects zero in on a flower for nectar, their ultraviolet ... An anti-feedant chemical discourages herbivorous insects and can harm those that don't get the message. One place DIPs are found is in hops, the female flowe...

Assaulting the mosquitos sense of smell

...at similar approaches are likely to work in other insects that pose threats as agricultural pests. So research of this sort may ultimately lead to ways to reduce insect damage to crops and stored food, along with a number of other useful applications....

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