Why Are the Bees Dying? - Modern Farmer

Why Are the Bees Dying?

A look at some potential stressors and pathogens behind colony collapse disorder.

Photography

The time has long passed when honeybees were taken for granted. In the past six years, colony collapse disorder (CCD) has destroyed 10 million bee hives, to the tune of $2 billion in damage, and that’s only the tip of the honeycomb.

Honeybees are pollinators, and many vital crops rely on pollen to grow anew each year. Take away the bees, and we lose cherries, onions, almonds, watermelons, cucumbers, blueberries, squash…you get the picture. Of the world’s 115 most important crops, 87 of them require pollination. If we don’t figure out what’s what, and soon, the global food supply may take a crippling gut punch.

Of course, the first step is sussing out what’s behind this mysterious plague. The USDA released a report on colony collapse last Thursday, and the findings were conclusively inconclusive. Rather than blame a single overarching factor, the report says “a complex set of stressors and pathogens is associated with CCD, and researchers are increasingly using multi-factorial approaches to studying causes of colony losses.”

Let’s review some stressors and pathogens.

Cell phones: In the mad dash to assign blame for CCD, electromagnetic radiation (EMR) was one of the early suspects. Low levels of EMR are produced by the earth itself, and by every living creature, but it’s the waves from cell phones and wi-fi signals that worry some researchers. Man-made EMR has been linked to cancer, migratory bird disruptions, and colony collapse disorder, though not conclusively. The USDA asserts cell phones have no connection to CCD, further noting that “apiaries are often located in rural areas, where cell phone coverage can be spotty.”

Corn syrup: Is there anything to like about high-fructose corn syrup? Not only is it contributing to a global obesity epidemic, recent studies link it to colony collapse disorder. Corn syrup has been fed to bees because of its low cost (same reason you’ll find it in many supermarket products), but the cheap sweetener might make them vulnerable to bacteria and pesticides.

Neonicotinoid pesticides: Speaking of pesticides, you’ve probably heard CCD connected to a toxic subcategory called neonicotinoids (aka neonics). This potential cause has created a transcontinental rift after the European Union recently banned neonicotinoids. The new USDA report lists neonics as one of many possible CCD factors, but rejects the EU’s sweeping indictment. (Later today, Modern Farmer has a story of beekeepers suing the EPA over neonicotinoids.)

Varroa mites: Science ominously called these parasites Varroa Destructor, and since 2007 they’ve been doing their best to earn the name. They spread a piece of work called Deformed Wing Virus (DWV), and it’s brutal; varroa mites decimated 274 of 419 bee colonies on the island of Oahu within a year. And even if you get rid of the mites, it’s nearly impossible to eliminate lingering DWV.

Terminator seeds: Before most of the world opted not to pursue this technology, several large agriculture companies were working on GMOs called “terminator” or “suicide” seeds. These seeds become sterile in the second generation, and some studies claimed they were deadly to bees.

Climate Change: Arguing that bees are vulnerable to weather extremes like drought and floods, climate change has been blamed for CCD (usually in conjunction with other factors). The basic theory is that ecosystems are being disrupted in unpredictable ways, while bees thrive in stable environments.

This is part of Modern Farmer’s Bee Week. Click here to see everything from our entire week of coverage all things honeybee. Bee Week: It’s like Shark Week, but with bees.

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