Lake research offers clues to managing crayfish invasions
...s us some hope that we might be able to take lakes infested by rusty crayfish and force the system from one state to another," says Roth. To test this theory, he and other researchers are conducting an experiment in which they have set up 300 rusty crayfish traps at the bottom of a 150-acre lake in northern W...Study probes ecosystem of tree holes
... years of accumulated decomposing leaves and bugs, infested with bacteria, other microbes, and crawling with insect larvae. A biologist at Washington University in St. Louis has studied theecosystem of the tree hole and the impact that three factors predation, resources and disturbance - have on spec...Fire ant killing protozoa found in 120 Texas counties
...tomologist found an fire ant colony near Thorndale infested with the protozoa. "Later, tests showed that the DNA of the Thorndale strain differed from the South American strain," Mitchell said. The Texas A&M survey shows the protozoa has occurred naturally, without human intervention. Questions still remai...Tiny beetle wreaks havoc on Texas ornamental tree nurseries
..., no chemical controls will save it. A tree may be infested by a single beetle or by hundreds. For juvenile tr...al control strategy is to cut down and destroy any infested trees immediately. If local ordinances permit, burning the tree is the best way to ensure the beetle...IU and Purdue scientists to answer questions about Brood X periodical cicadas
...ited States. Experts predict Indiana alone will be infested with trillions of the bugs. WHEN: Thursday (May 6) at 1:30 p.m. WHERE: Indiana State Museum, Multipurpose Room, 650 W. Washington St., Indianapolis, Ind. 46204-2725. Media parking is available in the museum circle drive on the building's south ...The cicadas are coming, the cicadas are coming: Research on 'Brood X' cicadas focus of briefing
...987. Scientists predict that Indiana alone will be infested with millions of the bugs. A particularly heavy emergence will also occur in the Washington, D.C., metro area. Among other topics, the scientists will discuss how human alteration of forests affects cicadas. Cicadas are drawn to the forest edge; bec...Disease threatens cucumbers, pumpkins, and other vine crops
...s traveling more than 50 miles, to find fields not infested with Phytophthora capsici," said Babadoost. Phytophthora blight can strike cucurbit plants at any stage of growth. The infection usually appears first in low areas of the fields where the soil remains wet for longer periods of time. The pathogen infe...Scientists question reports of massive ant supercolonies in California and Europe
...explanation, they say, is that California has been infested by numerous colonies of genetically distinct Argentine ants during the last 100 years. Challenging the supercolony paradigm is more than an academic exercise, says Stanford biologist Deborah M. Gordon. Argentine ants have had a major impact in many...Signal chemical primes plants for pest attack
...to GLVs could protect fields in danger of becoming infested with beet armyworm or other leaf eating caterpillars. This natural chemical might someday reduce the use of pesticides and improve crop quality. Tumlinson chose the corn and beet armyworm system because the Florida facility has raised beet armyworms...Spruce bark beetle outbreaks examined at Alaska Symposium
...2004. About 4 million acres of spruce forests were infested and killed by the spruce beetle in south-central Alaska in the past decade--more than twice the amount affected from 1919 to 1989. Fire, of course, spreads rapidly through these dead forests causing catastrophic damage to life and property. Several ...Scientists unraveling lice genome to halt blood-sucking pest
... the pubic louse. Body lice inject saliva into the infested person, often causing itching and usually a rash or red bumps on the skin. Scratching the rash can cause infected sores. In certain areas of the world, body lice may transmit fatal diseases such as louse-borne typhus. Pittendrigh and the lead researc...Vacuum technology developed to control insects in wood
...sian Longhorn Beetle was introduced in America via infested shipping materials. Principal investigators responsible for the vacuum control project include Virginia Tech's wood science and forest products research specialist Zhangjjng Chen, professor Marshall White, and entomologist professor William H. Robins...Plant pathologists find growing number of plants affected by sudden oak death
...rategy may make it able to persist indefinitely in infested forests and may affect the success of future regeneration and restoration efforts." While these new developments are worrisome, they are not without hope. "The more we know about how SOD is spreading, the greater the chances for finding a way to cont...Plant pathologists unpeel rumors of banana extinction
...as would require either infected banana suckers or infested soil to be imported from Asia, both of which are strictly forbidden in the export-producing countries, said Ploetz. "If tropical race 4 did spread to the Western Hemisphere, damage would be restricted by the containment and eradication measures that ...Special section: Invasive species
...uarantine on anything that could carry soil out of infested areas....Kiss mistletoe goodbye this season for better tree health
COLLEGE STATION - Take mistletoe. Please. Trees infested with the sap-sucking parasite would like to kiss the Christmas novelty goodbye. And that may become easier -- even without holiday harvests -- due to new research at the Texas Agricultural Experiment Station. "Mistletoe is unsightly and adversely aff...Plant detectives seek sources of invasive trees
...ter-threatened area. Over a million acres are now infested with saltcedar monocultures along streams and riverbeds. The salt cedars' long taproots suck up salty ground water and drop salt-crusted leaves on the soil surface. This makes it almost impossible for native plants to take root. The loss of native p...New witchweed-fighting method, presented by CIMMYT and Weizmann Institute scientist
...n increase yields up to four-fold in fields highly infested with witchweed. The herbicide is coated on the seed together with the fungicide-insecticide mix that is normally used in Africa to provide healthy plants. With this technology the farmer does not have to purchase spray equipment and can continue in......just a problem in Michigan. Twenty-two states are infested with this fast-spreading aquatic nuisance species, and the number is likely to grow. Adult zebra mussels and veligers (larvae) are easily transported from one body of water to another via boats, trailers and fishing equipment. They can attach to a......rval damage. Worse, the weevil reduced seed set in infested flower heads by 98%: infested flower heads produced about one viable seed each while undamaged flower heads produced about 45 seed...