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Are bees still dying? (1 Viewer)

http://www.planetark.com/dailynewsstory.cf...43163/story.htm

MADRID - A parasite common in Asian bees has spread to Europe and the Americas and is behind the mass disappearance of honeybees in many countries, says a Spanish scientist who has been studying the phenomenon for years.

The culprit is a microscopic parasite called nosema ceranae said Mariano Higes, who leads a team of researchers at a government-funded apiculture centre in Guadalajara, the province east of Madrid that is the heartland of Spain's honey industry.

He and his colleagues have analysed thousands of samples from stricken hives in many countries.

"We started in 2000 with the hypothesis that it was pesticides, but soon ruled it out," he told Reuters in an interview on Wednesday.

Pesticide traces were present only in a tiny proportion of samples and bee colonies were also dying in areas many miles from cultivated land, he said.

They then ruled out the varroa mite, which is easy to see and which was not present in most of the affected hives.

For a long time Higes and his colleagues thought a parasite called nosema apis, common in wet weather, was killing the bees.

"We saw the spores, but the symptoms were very different and it was happening in dry weather too."

Then he decided to sequence the parasite's DNA and discovered it was an Asian variant, nosema ceranae. Asian honeybees are less vulnerable to it, but it can kill European bees in a matter of days in laboratory conditions.

"Nosema ceranae is far more dangerous and lives in heat and cold. A hive can become infected in two months and the whole colony can collapse in six to 18 months," said Higes, whose team has published a number of papers on the subject.

"We've no doubt at all it's nosema ceranae and we think 50 percent of Spanish hives are infected," he said.

Spain, with 2.3 million hives, is home to a quarter of the European Union's bees.

His team have also identified this parasite in bees from Austria, Slovenia and other parts of Eastern Europe and assume it has invaded from Asia over a number of years.

Now it seems to have crossed the Atlantic and is present in Canada and Argentina, he said. The Spanish researchers have not tested samples from the United States, where bees have also gone missing.

Treatment for nosema ceranae is effective and cheap -- 1 euro (US$1.4) a hive twice a year -- but beekeepers first have to be convinced the parasite is the problem.

Another theory points a finger at mobile phone aerials, but Higes notes bees use the angle of the sun to navigate and not electromagnetic frequencies.

Other elements, such as drought or misapplied treatments, may play a part in lowering bees' resistance, but Higes is convinced the Asian parasite is the chief assassin.

Story by Julia Hayley

Story Date: 19/7/2007
 
I "splashed" one out of the pool today. He looked half dead but was still moving his legs. I cupped my hands and got him on the deck. It took several minutes for him to dry his wings off and finally take flight.Godspeed little man...godspeed.
If you tweak the ending of this story a little, you could have a winner.Maybe have him sting you after you rescue him, but you forgive him and set him free, only to later discover while perusing Wikipedia that bees die after deploying their stinger.Something like that.
:lol:Or, you could cut off all your hair and sell it so you can afford to buy the bee a nice gift for his hive, only to learn he sold his hive so he could buy you a comb for your beautiful hair. :shrug:
You're a magician.
 
I've seen plenty of bees around my house in Omaha. Actually, probably more then usual.
We have plants and shrubs outside that in the spring usually attract a swarm for about a month. This year, barely any...maybe I'd see a couple here or there where there used to be dozens and dozens of them.
 
As bees go missing, a $9.3B crisis lurksThe mysterious disappearance of millions of bees is fueling fears of an agricultural disaster, writes Fortune's David Stipp.By David Stipp, FortuneAugust 28 2007: 7:26 AM EDT(Fortune Magazine) -- It's a sweet time for honeybees in the rolling hills of eastern Pennsylvania, and the ones humming around Dennis vanEngelsdorp seem too preoccupied by the blooming knapweed nearby to sting him as he carefully lifts the top off their hive. VanEngelsdorp, Pennsylvania's state apiarist, spots signs of plenty within: honeycomb stocked with yellow pollen, neat rows of wax hexagons housing larval bees, and a fertile queen churning out eggs. But something has gone terribly wrong in this little utopia in a box. "There should be a lot more workers than there are," he says. "This colony is in trouble." Pennsylvania apiarist Dennis vanEngelsdorp helped form a group trying to crack the case of the vanishing insects. A frame removed from a hive afflicted by colony collapse disorder (CCD). The 'smoker' on top is used to sedate the bees. David Hackenberg sounded the alarm about collapsing colonies. More from FORTUNE A $9.3B bee crisis lurks The subprime threat: State by state A brief history of fear FORTUNE 500 Current Issue Subscribe to Fortune Photo Gallery See more photos That pattern -- worker bees playing Amelia Earhart -- has become dismayingly familiar to the nation's beekeepers over the past year, as well as to growers whose crops are pollinated by honeybees. A third of our food, from apples to zucchinis, begins with floral sex acts abetted by honeybees trucked around the country on 18-wheelers.The mysterious deaths of the honeybees We wouldn't starve if the mysterious disappearance of bees, dubbed colony collapse disorder, or CCD, decimated hives worldwide. For one thing, wheat, corn, and other grains don't depend on insect pollination. But in a honeybee-less world, almonds, blueberries, melons, cranberries, peaches, pumpkins, onions, squash, cucumbers, and scores of other fruits and vegetables would become as pricey as sumptuous old wine. Honeybees also pollinate alfalfa used to feed livestock, so meat and milk would get dearer as well. Ditto for farmed catfish, which are fed alfalfa too. And jars of honey, of course, would become golden heirlooms to pass along to the grandkids. (Used for millennia as a wound dressing, honey contains potent antimicrobial compounds that enable it to last for decades in sealed containers.) In late June, U.S. Agriculture Secretary Mike Johanns starkly warned that "if left unchecked, CCD has the potential to cause a $15 billion direct loss of crop production and $75 billion in indirect losses." $9.3 billion worth of endangered crops Late last year vanEngelsdorp, a strapping, 37-year-old Netherlands native with a thatch of blond hair and a close-cropped goatee, helped organize a group of bee experts to identify the killer. In recent months he's acted as the team's gumshoe, driving thousands of miles to collect bees and honeycomb samples from CCD-afflicted hives to analyze for clues. Meanwhile, Pennsylvania State University entomologist Diana Cox-Foster has scoured bees from collapsed colonies for signs of disease-causing microbes. She's shown that the insects are chock-full of them, as if their immune systems are suppressed. Now the entomologists, aided by Ian Lipkin, a Columbia University scientist known for cracking the case of the West Nile virus (he identified the mosquito-transmitted killer of birds and sometimes people), are closing in on possible culprits and reportedly have submitted a study identifying a virus associated with CCD to a scientific journal. The bug may have been introduced into the U.S. via imported bees or bee-related products, say researchers familiar with the study. "If I were a betting man," says Dewey Caron, a University of Delaware entomologist who co-authored a recent report on CCD's toll, "I'd bet it's a virus that's fairly new or one that's mutated to become more virulent." Other pathogens, such as fungi, may have combined forces with the virus, he adds. But merely showing that germs selectively turn up in cases of CCD, he cautions, won't necessarily nail the culprit, for it will leave a key question unanswered: Are such microbes the main killers, or has something else stomped bees' immune systems, making them vulnerable to the infections? After all, the first report on AIDS focused on a strange outbreak of rare fungal pneumonia, "opportunistic" infections whose root cause was later identified as HIV, the human immunodeficiency virus.A fight about fish farms Fortunately, a bee apocalypse seems unlikely at this point. Beekeepers have recovered from CCD-like hits in the past -- major bee die-offs seem to occur about once a decade. Most beekeepers recently contacted by Fortune say hives generally appear normal of late. Still, ominous reports of worker-scarce hives like the one vanEngelsdorp recently examined suggest that whatever causes CCD is still in circulation and may well decimate hives again when bees' floral support system drops away this fall.If that happens, "it will be a lot worse than the first time, because [commercial beekeepers] have already spent a lot of their money" replacing lost bees, says Richard Adee, head of the country's largest beekeeping operation, Adee Honey Farms of Bruce, S.D., which, despite its name, is largely a pollination business. The losses weren't insured, he adds: Because of all the unpredictable things that can kill bees, from mites to droughts, insurers have long refused to cover them. "We'll see a lot of guys just hang it up." So that's the thing to worry about: While CCD isn't likely to obliterate honeybees, it may wipe out enough migratory beekeepers to precipitate a pollination crisis. They're already thin on the ground -- a rare breed of truck drivers who also happen to be applied entomologists, amateur botanists, skilled nursemaids of cussed old machines, traveling salesmen, and Job-like nurturers of finicky, stinging insects that, when they're not mysteriously dying off, can suddenly swarm on you like something out of Hitchcock. Commercial beekeepers make up only about 1% of the 135,000 owners of hives in the U.S., but they manage over 80% of the nation's 2.4 million honeybee colonies. If the waning number of hives in the U.S. is any indication, commercial beekeeping was already in a long-term decline before CCD struck -- in 1960 there were about five million hives, more than twice as many as there are today. Meanwhile, demand for pollination services is growing, largely because of our love affair with the almond -- it's increasingly seen as a health food, and the FDA acknowledged in 2004 that there are data "suggesting" a daily dose of 1.5 ounces of almonds or other nuts, along with a low-fat diet, may lower the risk of heart disease. By 2012 nearly 90% of the hives now estimated to exist in the U.S. will be needed to pollinate California's almond groves each spring, according to the Almond Board of California.10 crops most at risk Commercial beekeeping has a lot in common with the disappearing family farm. The typical bee rancher is a salt-of-the-earth, 50-something, strong-armed guy who often sweats through the night forklifting hives filled with seriously annoyed bees onto a flatbed semi in order to rush them to his next customer's field 500 miles away, which just may be near a crop sprayed with insecticides that will kill 15% of his livestock as they wing around the area. Cheap honey imported from China and Argentina has clobbered his profits, forcing him to work his bees ever harder as migratory pollinators. He loses lots of bees to "vampire" mites, hive-busting bears, human vandals, and sometimes to beekeepers gone bad, who steal hives by night and pollinate by day. His kids can see that there are much easier ways to make a living. But for all that, he's never lost the sense of wonder that came over him the first time he heard the piping of a queen -- a kind of battle cry that newly emerged honeybee queens make before fighting to the death for hive supremacy. From outside a hive, it sounds like a child wistfully tooting a toy trumpet in a distant room. If CCD flares up again, one of the casualties may be the Paul Revere of colony collapse, a lanky, 58-year-old beekeeper named David Hackenberg. The story of the disappearing bees began one afternoon last October when he and his son Davey pulled into one of their "bee yards" near Tampa to check on 400 hives they had placed there three weeks earlier. The Hackenbergs' main center of operations is a farm near Lewisburg, Pa., but like most migratory beekeepers, they move their bees south each winter for a few months of R&R (rest and reproduction) before the rigors of spring pollination. Hackenberg, a gregarious raconteur with a Walter Brennan voice, says the first sign of trouble was that "there were hardly any bees flying around the hives. It was kind of a weird sensation, no bees in the air. We got out our smokers" -- bellows grafted to tin cans that beekeepers use to waft bee-sedating smoke into hives before opening them "and smoked a few hives, and suddenly I thought, 'Wait a minute, what are we smoking?' "Next thing, I started jerking covers off hives ... It was like somebody took a sweeper and swept the bees right out of the boxes. I set there a minute scratching my head, then I literally got down on my hands and knees and started looking for dead bees. But there weren't any."Attack of the mutant rice Hackenberg spread the word about his vanished bees. Within days other beekeepers began reporting similar cases. Penn State's Cox-Foster, vanEngelsdorp, and other bee experts launched an investigation. After turning up more than a dozen cases of collapsing colonies across the country, the team issued a report in mid-December telling of beekeepers who'd lost up to 90% of their bees. The "unprecedented losses," according to the report, had many keepers "openly wondering if the industry can survive." By late spring CCD had made headlines around the world. Assorted phobia purveyors vied to adopt the die-off as a poster child for everything from cellphone emanations to God's Just Wrath. Internet bloggers thrilled themselves silly bandying about a sentence from Albert Einstein, which the great physicist apparently tossed off about 40 years after his death to the public-relations department of a French beekeeping group: "If the bee disappears from the surface of the earth, man will have no more than four years to live." A survey sponsored by Bee Alert Technology, a Missoula, Mont., firm that sells hive-tracking devices and other bee wares, turned up reports of CCD in 35 states and Puerto Rico by early June. Despite the widespread impression that CCD started with Hackenberg's losses last October in Florida, says Bee Alert CEO Jerry Bromenshenk, "our survey shows that it probably first began to show up the previous spring in Michigan, Wisconsin, and Iowa. By midsummer [last year] it was moving through the heartland," hitting hives in the Dakotas, then appearing widely a few months later in the South and on both coasts. A survey led by vanEngelsdorp and Florida apiary inspector Jerry Hayes suggests that a quarter of U.S. beekeepers were struck by CCD between September 2006 and March 2007. Those hit by mysterious die-offs lost, on average, 45% of their hives. The surveys failed to show patterns suggesting CCD's cause. But they provided alibis for some prime suspects, such as beekeeper enemy No. 1: blood-sucking Varroa destructor mites. (Picture a tick as big as a Frisbee glommed onto your back -- that's what Varroa is like for a bee.) Varroa both transmits harmful viruses to bees and suppresses their immune systems. But CCD has been reported in many hives without significant mite problems, says Jeff Pettis, an entomologist at the U.S. Department of Agriculture's Bee Research Laboratory in Beltsville, Md.Sugar cane ethanol's not-so-sweet future Another leading suspect -- stress on bees due to migratory pollination -- hasn't gotten off the hook so easily. Low honey prices coupled with rising pollination fees for certain crops have prompted migratory beekeepers to put their bees on the road more than ever during the past few years. Some now truck hives coast to coast, beginning in February with California almonds, then moving on to crops in the East, such as Maine blueberries. That potentially exposes bees to ever more diseases and insecticides. And many of the crops, such as cranberries, don't provide adequate bee nutrition. The insects aren't very good travelers either. When a truck carrying bees gets caught in a summer traffic jam, for instance, hives quickly overheat, despite the fact that the millions of workers inside them furiously fan their wings in an attempt to prevent it, says Wes Card, a beekeeper whose Merrimack Valley Apiaries in Billerica, Mass., pollinates crops from California to Maine. "Then every minute counts," he adds, for unless the driver can quickly find a way to pull off the road and hose down the hives with cooling water, desperately hot queens emerge from their inner sanctums and typically wind up venturing into nearby colonies on the truck, where they are perceived as alien invaders and promptly killed. (Ironically, worker bees typically execute a condemned monarch by clustering around her and vibrating their wing muscles to generate heat, fatally raising her temperature -- beekeepers call it "balling the queen" because the executioners form a ball of bees.) A hot day can turn a load of hives into a costly mess within minutes. Stress probably isn't the main culprit, though. In fact, the biggest commercial beekeepers -- those with over 500 hives, most of whom are migratory pollinators -- lost a smaller percentage of their hives when hit by CCD last winter than did hobbyist beekeepers, according to the survey co-authored by vanEngelsdorp. Further, there's some evidence that CCD may antedate the modern stresses put on bees. Large numbers of honeybees have mysteriously vanished a number of times since the mid-19th century, suggesting that CCD may be just the latest episode in a "cycle of disappearance" caused by a mystery disease that periodically flares up like a deadly worldwide flu epidemic. Still, entomologists who have personally observed the effects of CCD insist that it is unlike any bee die-off they've seen. The University of Delaware's Caron, one of the bee world's biggest names, says he was stunned when 11 of 12 hives in the school's apiary collapsed last winter, apparently because of CCD. "Never in 40 years had I witnessed the symptoms I was seeing," he says.Winning in the wine biz One of CCD's strangest symptoms, say bee experts, is a phenomenon that might be called the madness of the nurses. Nurse bees are workers that nurture a hive's preadult bees, called brood. Workers begin their adult lives as nurses, and only during the final third or so of their six-week lives do they become foragers, venturing outside the hive to collect nectar and pollen. Researchers have discovered that the young nurses are maintained in a kind of immature, thickheaded state by chemical signals emanating from the queen. Nurses aren't supposed to leave the hive. They're not ready to cope with the big outside world, which requires a mature bee's smarts. Besides, with nurses on leave, the all-important brood would wither. Yet empty hives struck by CCD are often found with intact brood, which means nurses were on the job shortly before all the bees flew off forever. Beekeepers find this gross dereliction of duty much weirder than the disappearance of foragers, which essentially work themselves to death and often die outside the hive. Says Hackenberg: "Basically, I've never seen bees go off and leave brood. That's the real kicker." To explain the psychotic behavior, some beekeepers, including Hackenberg, point the finger at an increasingly popular class of insecticides called neonicotinoids. The chemicals are widely used by farmers on fruits and vegetables that bees pollinate, as well as on corn and other crops often grown nearby. Soon after Bayer (Charts), the German drug and chemicals concern, first put the products on the market in the early 1990s, they were implicated in a bee die-off in France, where their use was then sharply restricted. Since 2000, studies by French and Italian researchers have suggested that low, "sublethal" doses of the chemicals -- which bees might get from lingering traces of the insecticides in fields -- can mess up the insects' memories and navigational abilities, potentially making them get lost. Bayer has countered with its own studies, which it asserts demonstrate that the products, when properly used, don't pose significant risks. Honeybees' exposure to trace amounts of neonicotinoids can't be ruled out, says Chris Mullin, a Penn State University entomologist investigating whether pesticides are involved in CCD. But he and other CCD investigators doubt that neonicotinoids will turn out to be the primary culprits. For one thing, many other chemicals to which bees are exposed are nerve toxins that can make them act strange at low doses. And it's hard to reconcile the rapid, widespread appearance of CCD last year with the fact that numerous such chemicals have long been widely used. Could infectious microbes induce the nurses' insanity?The great corn gold rush Maybe. Young workers with a disease caused by "sacbrood" virus tend to start foraging abnormally early in life, when their healthy peers are still nursing. And as if discombobulated in their new roles, they fail to collect pollen. Although sacbrood virus has been detected in bees from some hives with CCD symptoms, as have a number of other viruses, it doesn't appear to be closely associated with the disorder. But its ability to warp young bees' behavior suggests that viruses may well induce nurses to do the unthinkable. Another explanation may make more sense, though: Perhaps the nurses aren't really acting crazy when they fly away. Instead, their strange behavior may represent a perfectly natural attempt by doomed workers to protect their sisters from killer microbes. After all, a hive's workers represent a famously close-knit sorority, geared by evolution to act strictly in the best interests of their colonies. (Male "drones" don't work, by the way. They loaf about the hive most of their lives, zip out about noon every day in hopes of mating on the wing with young queens, then immediately die after copulating, presumably happy.) Beekeepers have long known that sick bees generally leave the hive to die, minimizing the risk that they will infect others. In his seminal 1879 tome The A B C of Bee Culture, Amos Ives Root, an early giant of U.S. beekeeping, marveled that "when a bee is crippled or diseased from any cause, he [sic] crawls away ... out of the hive, and rids the community of his presence as speedily as possible. If bees could reason, we would call this a lesson of heroic self-sacrifice for the good of the community." Might a fast-spreading, immune-suppressing disease be making nurses so sick that their urge to stay put is overruled by the altruistic impetus to depart?The organic milk price war The effort to answer such questions has entered a new phase with the recent linking of specific infectious agents to CCD (the ones whose identities are expected to be disclosed soon in a scientific journal). Now Cox-Foster says she and colleagues are trying to reproduce CCD's effects on bee colonies by seeding healthy hives with the agents -- the biomedical equivalent of getting a killer to confess. Meanwhile, scattered reports over the summer of hives with abnormally few workers and little stored honey have many bee people worried. A few beekeepers, frazzled by earlier heavy losses and worried that truly ruinous ones are on the way, have already bailed out. CCD 2 would probably be a lot uglier for growers -- and for us fruit and veggie eaters -- than version one was. In fact, we got lucky the first time it hit: "A lot of the bees brought to California this year were total junk," their hives sparsely populated because of CCD and other problems, says Lyle Johnston, a Rocky Ford, Colo., beekeeper who arranges the placement of 50,000 hives owned by other keepers in almond groves each spring. "But we had the most perfect weather during the almond bloom that I can recall. It saved our butts," by enabling bees to take to the air more often than they usually do. "We dodged the bullet with fruit, too, this year," says the University of Delaware's Caron. "We had weak bees, but the weather was exceptional during the apple, blueberry, and cranberry blooms." Unfortunately, Caron and others note, by keeping crop prices low, the good weather may have actually discouraged legislators from funding studies on CCD. To beekeepers' dismay, the farm bill recently passed by the U.S. House of Representatives, which calls for $286 billion to be spent over the next five years on everything from school snacks to biofuels, earmarked no funds specifically for CCD research. And the lucky run of weather probably won't last much longer. Extraordinarily dry weather through spring and early summer in California and the Southeast has stressed bees in those regions, potentially setting up many hives for collapse later in the year. Despite making some progress, cash-strapped scientists looking into CCD aren't likely to identify what causes it -- and ways to fend it off -- before the high-risk season for bee die-offs arrives with the onset of cold weather. So what to do in light of this new, unsolved, and probably ongoing threat to our food supply? Don't panic. But do take time to slowly savor your next sweet, spicy slice of cantaloupe, watermelon, apple, peach, or pear. The pure pleasure of it may get a lot rarer.
 
http://www.cnn.com/2007/TECH/science/09/06...rder/index.html

Scientists find clue in mystery of the vanishing bees

Story Highlights

Colony collapse disorder has killed millions of bees

Scientists suspect a virus may combine with other factors to collapse colonies

Disorder first cropped up in 2004, as bees were imported from Australia

$15 billion in U.S. crops each year dependent on bees for pollination

(CNN) -- A virus found in healthy Australian honey bees may be playing a role in the collapse of honey bee colonies across the United States, researchers reported Thursday.

Colony collapse disorder has killed millions of bees -- up to 90 percent of colonies in some U.S. beekeeping operations -- imperiling the crops largely dependent upon bees for pollination, such as oranges, blueberries, apples and almonds.

The U.S. Department of Agriculture says honey bees are responsible for pollinating $15 billion worth of crops each year in the United States. More than 90 fruits and vegetables worldwide depend on them for pollination.

Signs of colony collapse disorder were first reported in the United States in 2004, the same year American beekeepers started importing bees from Australia.

The disorder is marked by hives left with a queen, a few newly hatched adults and plenty of food, but the worker bees responsible for pollination gone.

The virus identified in the healthy Australian bees is Israeli Acute Paralysis Virus (IAPV) -- named that because it was discovered by Hebrew University researchers.

Although worker bees in colony collapse disorder vanish, bees infected with IAPV die close to the hive, after developing shivering wings and paralysis. For some reason, the Australian bees seem to be resistant to IAPV and do not come down with symptoms.

Scientists used genetic analyses of bees collected over the past three years and found that IAPV was present in bees that had come from colony collapse disorder hives 96 percent of the time.

But the study released Thursday on the Science Express Web site, operated by the journal Science, cautioned that collapse disorder is likely caused by several factors.

"This research give us a very good lead to follow, but we do not believe IAPV is acting alone," said Jeffery S. Pettis of the U.S. Department of Agriculture's Bee Research Laboratory and a co-author of the study. "Other stressors on the colony are likely involved."

This could explain why bees in Australia may be resistant to colony collapse.

"There are no cases ... in Australia at all," entomologist Dave Britton of the Australian Museum told the Sydney Morning Herald last month. "It is a Northern Hemisphere phenomenon."

Bee ecology expert and University of Florida professor Jamie Ellis said earlier this year that genetic weakness bred into bees over time, pathogens spread by parasites and the effects of pesticides and pollutants might be other factors.

Researchers also say varroa mites affect all hives on the U.S. mainland but are not found in Australia.

University of Georgia bee researcher Keith S. Delaplane said Thursday the study offers a warning -- and hope.

"One nagging problem has been a general inability to treat or vaccinate bees against viruses of any kind," said Delaplane, who has been trying to breed bees resistant to the varroa mite.

"But in the case of IAPV, there is evidence that some bees carry genetic resistance to the disorder. This is yet one more argument for beekeepers to use honey bee stocks that are genetically disease- and pest-resistant."

Bee researchers will now look for stresses that may combine to kill bees.

"The next step is to ascertain whether IAPV, alone or in concert with other factors, can induce CCD [colony collapse disorder] in healthy bees," said Ian Lipkin, director of the Center for Infection and Immunity at Columbia University Mailman School of Public Health.

Besides the Columbia and USDA researchers, others involved in the study released Thursday include researchers from Pennsylvania State University, the Pennsylvania Department of Agriculture, the University of Arizona and 454 Life Sciences.
:ptts: It's bee germ warfare on the part of them damn Aussies! They're trying to corner the world population of bees so that we have no choice but to come to them for our pollination and honey needs.

 
http://www.popsci.com/environment/article/2009-08/ccd

New Insight into Cause of Honeybee Colony Collapse Disorder

Glimmers of hope for future pollination

By Taylor Newman Posted 08.26.2009 at 3:15 pm

Since 2006, about 30 percent of the commercial honeybee population has died off due to Colony Collapse Disorder. Though many theories have emerged about the causes of CCD since it first began ravaging honeybee populations, a study released this week has identified the first molecular marker of the disorder.

Researchers from the University of Illinois and the U.S. Department of Agriculture used information compiled through the Honeybee Genome Project to compare gene expressions in healthy bees with CCD-affected bees. They discovered large quantities of fragmented ribosomal RNA in CCD-affected bees. These fragments were found in the healthy bees, too -- they are apparently products of the damage repair mechanism in insects in general -- but they're present to a much greater extent in CCD-affected bees.

May Berenbaum, University of Illinois entomology professor and department head, said via email that "the CCD bees also carry a greater number of picorna-like viruses; these are viruses that "hijack" the ribosome, inserting themselves and reprogramming ribosomes to manufacture viral proteins instead of bee proteins. So, what we think is happening is that infection by multiple viruses basically overloads the ribosome, which falls apart, thus leaving bees vulnerable to other stresses." This, according to the authors of the study, is "the root cause of colony collapse disorder."

As to the question of why CCD struck when it did, Berenbaum speculates that it can be traced to the importation of Australian bees, which may have been asymptomatic carriers of a picornavirus, to the U.S. four years ago. "In 2005, the Honey Bee Act of 1922, which prevented the importation of any live bees into the U.S., was effectively suspended to allow bees in. CCD might not have resulted just from Australian bees, but just by increasing global trade, increasing the odds of multiple infection (promoted by the varroa mite, which is a vector)."
Yup, looks like Bush was to blame after all.
 
Still dying, but I take "brink of biological disaster" with a grain of salt. I think I'm becoming desensitized by all the "disasters" that are either happening or are predicted to happen soon.
 
A virus + a fungus?

A fungus tag-teaming with a virus have apparently interacted to cause the problem, according to a paper by Army scientists in Maryland and bee experts in Montana in the online science journal PLoS One.

Exactly how that combination kills bees remains uncertain, the scientists said — a subject for the next round of research. But there are solid clues: both the virus and the fungus proliferate in cool, damp weather, and both do their dirty work in the bee gut, suggesting that insect nutrition is somehow compromised.
 
Anyone seeing many honey bees this year? I have clover growing under some apple trees that is usually full of bees. This year, nothing. Could be in part because of the dry weather we are having also.
We have a ton. At least 100 buzzing around during the day. Mostly around the trumpet vines and Mexican/Russian Sage.
 
Anyone seeing many honey bees this year? I have clover growing under some apple trees that is usually full of bees. This year, nothing. Could be in part because of the dry weather we are having also.
Haven't had many at all where I live in Michigan. The raspberries and blueberries I have were bad this year I think because of it. The apples don't seem to be doing well either, they were terrible last year too.I'm thinking of contacting the local beekeeper group and see if anyone wants to put a couple of hives on my property. My Grandfather had about 9 hives on about 3 acres and as a kid I don't recall ever being stung. We'd be running around about 20 feet from the hives and there was never a problem. My understanding is that bees kept by a beekeeper tend to be more docile than wild honey bees.Maybe I'll get some free honey that's worth eating. The pale amber stuff they have at most stores tastes like corn syrup.
 
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Anyone seeing many honey bees this year? I have clover growing under some apple trees that is usually full of bees. This year, nothing. Could be in part because of the dry weather we are having also.
Haven't had many at all where I live in Michigan. The raspberries and blueberries I have were bad this year I think because of it. The apples don't seem to be doing well either, they were terrible last year too.I'm thinking of contacting the local beekeeper group and see if anyone wants to put a couple of hives on my property. My Grandfather had about 9 hives on about 3 acres and as a kid I don't recall ever being stung. We'd be running around about 20 feet from the hives and there was never a problem. My understanding is that bees kept by a beekeeper tend to be more docile than wild honey bees.
I walk in and about them all the time. I literally walk right through flowers chest high where they are buzzing around. I've only been stung once and that was because I stepped on one barefooted. I don't know if there are different levels of aggressiveness based on geographic location, but I've never had an issue.As far as I can tell I've never been close to a hive though.
 
There are a lot of beekeepers on my route home since moving a few years ago and I've seen what seems like a drop in activity. :(

Think I'll stop by and ask. Might be time to set up some hives to help. I'm pretty sure we're not in a big pesticide area.

 
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I took an environmental science class this semester and we talked about this for a week, one of the leading theories at the moment is that the pesticides we are using may or may not outright kill bees but are laced with heavy metals that overtime affect bees in a lot of different ways, all bad.

 
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I took an environmental science class this semester and we talked about this for a week, one of the leading theories at the moment is that the pesticides we are using may or may not outright kill bees but are laced with heavy metals that overtime affect bees in a lot of different ways, all bad.
Time to start a heavy metal ban. :headbang:

 
Actually the weaker bees died off and stronger bees capable of surviving and breeding didn't. Turns out the surviving bees are more hardy an breed on... All in a stunning victory for Creationism.

 
this reminds me that i haven't seen one yet this season. we usually have a ton buzzing around the sage outside.... which, i think died because of the extreme cold this winter.

 

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