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Tag: "insect" at biology news

Master gene controls healing of skin in fruit flies and mammals

...c system controlling the development and repair of insect cuticle--the outer layer of the body surface in in...ital in Melbourne, Australia report that, although insect cuticle and the outer layer of mammal skin are very different chemically, the grainyhead gene is als...

At long last, scientists figure out how plants grow

...for their experiments. They also expressed TIR1 in insect cell cultures, to make sure that the binding of TIR1 to auxin is not directly influenced by other plant cell proteins. Auxins influence a wide variety of plant processes. For example, they are the hormones that cause roots to grow downward and flowe...

Sexual cooperation: Mating increases longevity in ant queens

...y the life history of social insects; whereas most insect females undergo repeated phases of mating and reproduction throughout their lifetime, ant queens in social species mate only during a short period early in life and store and use the sperm of their mate for the rest of their lives. Sexual offspring a...

In the migratory marathon, parasitized monarchs drop out early

...ntral Mexico ?one of the longest migrations of any insect species. Emory University researchers found that monarchs infected with a protozoan parasite fly slower, tire out faster and expend more energy flying than healthy monarchs. These results, published in the March issue of Ecology Letters, could expla...

X-Ray Beams And Fruit Fly 'Flight Simulator' Aid Scientists' View Of Muscle Power

...esearchers note that the many similarities between insect muscle and other oscillatory muscles, including hu...e research may be adaptable for other uses. “Both insect flight and human heart muscles store energy during each beat that is later used to help flap the win...

Falling ants glide back to trunk to avoid dangers of forest floor

...first observed last year outside Iquitos, Peru, by insect ecologist Stephen P. Yanoviak of UTMB. While perch...omething about the evolution of flight in terms of insect lineages, but it does give us good information about what kinds of morphologies are involved in the ...

UCSD discovery may help extend life of natural pesticide

...rs and in genetically engineered crops to ward off insect pests. Their findings should facilitate the desig... Aroian, who led the team. "But the development of insect resistance to Bt is a major threat to its long term use. Our findings make it possible to understand...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...their findings in the Feb. 3 issue of Nature. The insect respiratory system is designed to accommodate occasions when the insect is active. For example, a grasshopper is most active when it flies. When the grasshopper is inactive...

Experiments provide proof of how traveling in groups protects insects

...edators such as birds and rodents. Now, a trio of insect experts has developed what they believe is strong ... experimentally that band formation indeed boosted insect survival. Sword is a research ecologist with the U.S. Department of Agriculture's Agricultural Rese...

Experiments provide proof of how traveling in groups protects insects

...edators such as birds and rodents. Now, a trio of insect experts has developed what they believe is strong ... experimentally that band formation indeed boosted insect survival. Sword is a research ecologist with the U.S. Department of Agriculture's Agricultural Rese...

Poplar trees redirect resources in response to simulated attack

...trients in poplar trees in response to a simulated insect attack. The research provides new insights on a lo...s us to study the effects of external factors like insect attacks, disease, elevated carbon dioxide, soil toxins, and drought on vital plant processes." Ferr...

Spider Venom Could Yield Eco-Friendly Insecticides

...rotoxins focuses on one the world's most efficient insect predators -- spiders. The Blue Mountains funnel-we...the toxins that are essential for interaction with insect ion channels. (Ion channels allow the movement of ions -- small charged molecules -- across cell mem...

Ancient olfaction protein is shared by many bugs, offering new pest control target

In the battle against insect pests, new research indicates that it may all come... be evolutionarily conserved across very different insect species. Research by Leslie Vosshall's laboratory had previously shown that of 62 odorant-receptor ...

Plants, animals share molecular growth mechanisms

...rnal stimuli so they can defend themselves against insect or fungal attacks," Szymanski said. A protein complex known as Actin Related Protein 2/3 (ARP2/3) is a cellular machine that controls formation of actin filaments, which are important for cell growth and movement. Actin filaments organize the inside...

Molecular biology fills gaps in knowledge of bat evolution

...y a major ecological role as plant pollinators and insect predators. For Springer, this latest research is significant because it shows that molecular information can contribute to resolving and illuminating long-standing problems in evolutionary biology. The current findings lay the groundwork for furthe...

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