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Tag: "infestation" at biology news

Scientists find genes involved in the battle between Hessian flies and wheat

...ar. The flies are found worldwide, but the U.S. infestation has been mainly in the Southeast. In Georgia durin... in Oklahoma in 2006. Most recently, a Hessian fly infestation was identified near Lafayette, Ind., where the insect hadn't been reported for more than a decade. ...

Canada's new government invests $200M in the fight against the mountain pine beetle

...million to minimize the consequences of the beetle infestation and assist in efforts to slow the infestation's eastward spread. "This outbreak is a major threat to the economy and the communities of British Columbia," said the Honourable Gary Lunn, Minister of Natural Resources. "With this program, we'll be wor...

Salmon farms kill wild fish, study shows

...igrate past fish farms die as a result of sea lice infestation from the farms. The results of the research have been published in the Proceedings of the National Academy of Sciences of The United States of America. "We know that fish farms raise sea lice levels, and we know that sea lice kill fish," said the s...

Edge density key to controlling gypsy moth spread

... gypsy moth in 1869 in Massachusetts has led to an infestation covering more than 386,000 square miles of the U.S...s and usually only spreads a short distance beyond infestation boundaries. External colonies occur when moths hitch a ride on vehicles or other items relocated by ...

Parasitic plants sniff out hosts

...timated that in California each year, a 20 percent infestation of the tomato crop reduces yield by 25 percent and causes a loss of 4 million dollars." The researchers used a variety of experiments to determine how newly emerging dodder shoots find a host. The length of time these parasites can live without a...

Study shows hope for ridding lakes of clawed invader

...ng point." Vander Zanden says the rusty crayfish infestation in Sparkling Lake, like most lakes where it is found, was probably sparked by a small pioneer group that somehow got into the lake. At one time, rusty crayfish were used as bait. Misguided attempts years ago to establish the rusty in Wisconsin for co...

Researchers discover key gene involved in bark beetle pheromone production

... basin lost 30 percent of its pines to bark beetle infestation during the 1986-1994 drought, according to Blomquist. There are several hundred species of bark beetles, which are in the insect family Scolytidae. These beetles are difficult to control via insecticides because they live almost all of their lives, ...

Bee mites suppress bee immunity, open door for viruses and bacteria

...persist in a colony." The combination of bee mite infestation and deformed wing virus does cause deformed wings in about a quarter of the emerging bees. This, however, does not lead to sudden hive collapse. Something else is involved that makes bee mites so harmful to bee colonies. The Penn State researchers r...

Scientists discuss improved biopesticides for locust control in West Africa

...,." Agblevor said Local officials are calling the infestation in West Africa the worst in 18 years. The pests invaded the region last summer, affecting millions of acres of farmland. The locusts are in recession now because they do not breed in the dry season, but when the annual spring rains begin, they are ex...

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