Based on invertebrate surveys primarily representing butterflies dung beetles and ants Burivalova and her colleagues found further diversity losses with logging.
and pests like the filbert weevil and filbert moth harbored by the duff and litter on the ground.
#Researchers study flight pattern of red palm weevil in order to set more efficient control measureswhat is the average distance that the red palm weevil covers?
Does the insect's sex age and body size have an influence on its flight potential?
when an insect is detected all the palm trees within 500 metres run the risk of being infested weevil says Antonia Soto researcher at the Mediterranean Agroforestal Institute of the UPV.
For example in a newly detected source of palm trees with red palm weevil now we know up to what distance we must apply control measures
Or we know the safety perimeter that must be applied in an area with red palm weevil presence adds Juan Antonio à valos researcher at the Mediterranean Agroforestal Institute of the UPV.
and recent arrivals such as the Asian longhorned beetle and the emerald ash borer have killed millions of trees and altered urban landscapes in the Northeast and Midwest.
and a defoliating weevil which should further reduce Brazilian peppertree growth and reproduction in Florida. â#Scientists will now seek permission to release the thrips into areas Brazilian peppertree is growing.
According to their research published online this week in The Proceedings of the National Academy of Sciences these fossil beetles indicate that during a period of global warming in the geological past there were mild frost-free winters extended even in the uplands
because tree-of-heaven is very hard to kill said Davis. The researchers noticed a number of Ambrosia beetles near the infected stands leading them to theorize that the fungus often carried through the forests by beetles was involved in the tree deaths.
The Ambrosia beetles may explain some of the long-range spread of the disease said Davis. One theory is that the beetles feed on an infected tree
or pallets imported from Asia where the beetle is said native she. There were probably only a few live beetles that arrived
but ash trees are common in urban landscapes as well as in forests. When they emerged there were likely ash trees nearby providing food for the beetles and their offspring.
Slender cores were collected from the trunk of more than 1000 ash trees across six counties in southeast Michigan.
Some of the spread was natural--adult beetles flying from one ash tree to another. However new satellite populations were started by people transporting infested ash trees from nurseries or as logs and firewood.
or four generations of beetles have emerged and gone off to colonize new ash trees. In addition reports of declining ash trees were not uncommon in Michigan and surrounding states in the 1990s.
When shiny green beetles emerged from dying ash trees however researchers knew it was something out of the ordinary.
Specialists at the Smithsonian Institute and London's Museum of Natural history could not identify the beetles.
and similar beetles was able to identify the specimens. Still the species had no common name until the MSU entomologists
The Asian ash species have evolved with the beetles so healthy trees there are resistant to them.
Events such as droughts floods wildfires and pest outbreaks associated with climate change (for example bark beetles in the West) are already disrupting ecosystems.
While the largest category of insect was beetles leaf chewers among grasshoppers stick insects and caterpillars as well as a few ants were collected also.
#Getting at the root of mountain pine beetles rapid habitat expansionthe mountain pine beetle has wreaked havoc in North america across forests from the American Southwest to British columbia
Because of its importance and impact on forestry the mountain pine beetle's genome has been sequenced recently. Using this new resource authors Janes et al. examined how the pine beetle could undergo such rapid habitat range expansion
and if population genetics and the cataloguing of genome wide mutations could shed any light on possible molecular causes of the outbreak.
From beetles collected at 27 sites in Alberta and British columbia they looked for any patterns amongst their catalog of 1536 mutations (single-nucleotide polymorphisms or SNPS).
and conclude that the mountain pine beetle may have been able to spread by adjusting its cellular and metabolic functions to better withstand cooler climates
Bark beetles change Rocky mountain stream flows, affect water qualityon Earth Week--and in fact every week now--trees in mountains across the western United states are dying thanks to an infestation of bark beetles that reproduce in the trees'inner bark.
Some species of the beetles such as the mountain pine beetle attack and kill live trees. Others live in dead weakened or dying hosts.
In Colorado alone the mountain pine beetle has caused the deaths of more than 3. 4 million acres of pine trees.
Dead trees don't drink waterthe unprecedented tree deaths caused by these beetles provided a new approach to estimating the interaction of trees with the water cycle in mountain headwaters like those of the Colorado
Large-scale tree death due to pine beetles has many negative effects says Tom Torgersen of NSF's Directorate for Geosciences and lead WSC program director.
The new results show that the fraction of late-summer groundwater flows from affected watersheds is about 30 percent higher after beetles have infested an area compared with watersheds with less severe beetle attacks.
In bark beetle-infested watersheds. Story Source: The above story is provided based on materials by National Science Foundation.
the bombardier beetle is approximately one centimetre long and common to Central europe. At first glance it appears harmless
When threatened the bombardier beetle releases a caustic spray accompanied by a popping sound. This spray can kill ants or scare off frogs.
The beetle produces the explosive agent itself when needed. Two separately stored chemicals are mixed in a reaction chamber in the beetle's abdomen.
An explosion is triggered with the help of catalytic enzymes. When you see how elegantly nature solves problems you realise how deadlocked the world of technology often is says Wendelin Jan Stark a professor from the ETH Department of chemistry and Applied Biosciences.
therefore looked to the bombardier beetle for inspiration and developed a chemical defence mechanism designed to prevent vandalism--a self-defending surface composed of several sandwich-like layers of plastic.
Whereas enzymes act as catalysts in the bombardier beetle manganese dioxide has proven to be a less expensive alternative for performing this function in the lab. The researchers report that the product of the reaction in the film is more of a foam than a spray
when compared to the beetle as can be seen in slow motion video footage. Infrared images show that the temperature of the foam reaches 80 degrees.
The study provides a first glimpse at the diet of this mysterious spider revealing that it primarily preys upon species of scarab beetles common to the scrub habitat.
Our research suggests that red widows have evolved to specialize on scarab beetles because they are reliable food sources.
The study revealed that the primary prey of the spider especially in early spring are five species of scarab beetles endemic to the Florida scrub habitat.
The scarab beetles which often are larger and stronger than the spiders themselves fly just above the tops of scrub vegetation said Mark Deyrup senior research biologist for the Archbold Biological Station who co-authored the study.
Sometimes beetles hit the web strands between tips of palmetto fronds and tumble into the denser tangle of threads below catching them in the red widows'webs.
Carrel's study entitled Red widow spiders prey extensively on scarab beetles endemic in Florida scrub appeared in the March issue of the Florida Entomologist.
After the fireit is the first time that a study compares different responses of a set of animal organisms to fire (snails spiders beetles ants grasshoppers bugs birds and reptiles.
And the bark beetle is putting spruces all over Switzerland under increasing pressure because an additional generation of pests could hatch each year due to the rising temperatures.
and comes under increased pressure from bark beetles. This also reduces the protective effect against avalanches and rockfalls.
They found that microbes in the guts of rotation-resistant rootworms help those beetles that stray into soybean fields survive on soybean leaves for a few days--just long enough for the females to lay their eggs in soil that will be planted in corn the following year.
Rather than studying a laboratory population of insects in the new analysis the team tested RNAI on rootworm beetles collected from fields in three locations in the Midwest--two in Illinois with established rotation-resistant populations
They also recorded how long the beetles survived on soybean leaves after ingesting RNAI. As expected the RNAI targeting Dvrs5 reduced that enzyme's activity in all three rootworm populations.
But the treatment had less of an effect on rotation-resistant beetles (activity dropped to about 48 percent) than on their nonresistant counterparts (enzyme activity dropped to 24 percent.
Woodland salamanders facilitate the capture of this carbon before it is released by feeding on invertebrates (beetles earthworms snails ants etc.
Cornell research shows that the combination of natural enemies such as ladybeetles with Bt crops delays a pestâ##s ability to evolve resistance to these insecticidal proteins. â#oethis is demonstrated the first example of a predator being able
and beetles when they are ingested but have been proven safe to humans and many natural enemies including predaceous ladybirds.
Bt genes have been engineered into a variety of crops to control insect pests. Since farmers began planting Bt crops in 1996 with 70 million hectares planted in the United states in 2012 there have been only three clear-cut cases in agriculture of resistance in caterpillars
They studied populations of diamondback moth (Plutella xylostella) larvae a pest of broccoli and their natural enemies ladybird beetles (Coleomegilla maculata) for six generations.
The results showed that diamondback moth populations were reduced in the treatment containing ladybird beetles and unsprayed non-Bt refuge plants.
In contrast Bt plants with no refuge were defoliated completely in treatments without ladybirds after only four to five generations showing rapid development of resistance in the pests.
Dung beetles recount the nature of the pastthe biologists behind the new research findings synthesized decades of studies on fossil beetles focusing on beetles associated with the dung of large animals in the past or with woodlands and trees.
Their findings reveal that dung beetles were much more frequent in the previous interglacial period (from 132000 to 110000 years ago) compared with the early Holocene (the present interglacial period before agriculture from 10000 to 5000 years ago.
One of the surprising results is that woodland beetles were much less dominant in the previous interglacial period than in the early Holocene
The composition of the beetles in the fossil sites tells us that the proportion and number of the wild large animals declined after the appearance of modern man.
The cost of this insidious beetle to U s. corn growers has been estimated at one billion dollars annually.
The main reason for that yield increase is rice water weevil control. Gore said seed treatments are effective in both conventional rice varieties and hybrids.
Although they do not provide 100 percent control of rice water weevil seed treatments do provide significant benefits in rice he said.
and count the rice water weevil larvae. An infestation of one larva per core will result in about a 1 percent yield loss Gore said.
Typical infestations in the Delta range from 10 to 25 weevils per core in untreated fields resulting in a 10 to 25 percent yield loss.
We're targeting primarily rice water weevils and they only move into the field when producers establish the permanent flood about three to six weeks after planting Gore said.
The management practice that showed significant improvement in rice water weevil control beyond the seed treatment was a foliar overspray with a pyrethroid on hybrid rice Gore said.
#Asian longhorned beetles pheromone could be used to manage pestfemale Asian longhorned beetles lure males to their locations by laying down sex-specific pheromone trails on tree surfaces according to an international
and identified four chemicals from the trails of virgin and mated female Asian longhorned beetles--Anoplophora glabripennis--that were not found in the trails of males.
The synthetic trail pheromone may be useful in managing the invasive beetles in the field. Zhang isolated identified
By also applying the pheromone that female beetles use to attract males we can trick the male beetles into going to the deadly fungicide rather than to a fertile female.
Could fireflies replace LED lighting? Dressed to kill, one atom at a time Nanotubes development could double battery life Nano-advances behind new architectural products Scientists create functioning transistor from a single atom
So we're using cellulosic biomass waste streams--corn cobs, treetops and limbs, dead pine trees from pine beetles.
and beetles and big cats--are layered on top. That will give us a view of where we are with our knowledge of the tree of life.
Salvaging biofuel from the West's pine beetle devastationmountain pine beetles have been ravaging western forests.
with warmer temperatures allowing the insect to move into previously inhospitable areas and shortening the beetle's life cycle by up to a year.
The company has found a way to produce biofuel from the dead wood that pine beetles have left in their wake.
If Cobalt can convert beetle-killed wood, it likely that the company can make biofuel from almost any cellulosic feedstock.
and Mr. Perry said the pest could pose as big a threat to cotton farming in the South as the beetle that devastated the industry in the early 20th century.
it going to be like the boll weevil did said to cotton Mr. Perry, who is also chairman of the Georgia Cotton Commission. oeit will take it away
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