Study Finds Pesticide Makes It Hard for Bees to Fly on Target

Scientists say a widely used pesticide can affect honeybees’ ability to fly, making it harder for foraging bees to find their way home. They published their findings in the journal Scientific Reports.

Bee populations worldwide are currently facing a mountain of threats and difficulties. Parasites, habitat loss, and even antibiotics have all been implicated in the bees’ decline, but it may be pesticide that’s doing the most damage.

Foraging honeybees (Apis mellifera) regularly take in small amounts of chemicals like thiamethoxam, a neonicotinoid pesticide that’s regularly sprayed on monoculture crops like cotton, soybeans, and corn. A little dose won’t kill the bees, and it won’t keep them from coming back to consume more the next day. Over time, that chronic exposure can mess them up.

Biologists at the University of California San Diego’s Nieh Lab wanted to know if and how thiamethoxam could affect bees’ ability to fly. They exposed honeybees to low doses of the pesticide for two days, then strapped each one into this unusual contraption—the bee version of a treadmill.

At first, the pesticide almost seemed like it was doing the bees a favor. Thiamethoxam-exposed bees initially flew much farther and faster than bees who’d never been near the chemical.

The problem is that they weren’t flying anywhere in particular. They seemed disoriented and soon wore themselves out in their mad, flailing dash to get where they wanted to go. On the treadmill, this panic-type flying didn’t do them any harm, but in the wild, these erratic, exhausting flight patterns could keep the bees from ever getting home.

To make matters worse, given a choice, the bees almost always opted to consume pesticide, and they ate more when their food had been laced with the stuff.

"The honey bee is a highly social organism, so the behavior of thousands of bees are essential for the survival of the colony," co-author James Nieh said in a statement. "We've shown that a sub-lethal dose may lead to a lethal effect on the entire colony."

Header image by Luc Viatour via Wikimedia Creative Commons // CC BY-SA 3.0

Toronto, 'Raccoon Capital of the World,' Is Fighting Its Trash Panda Problem ... and Losing

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Toronto’s “raccoon-resistant” garbage cans aren’t as effective as city officials hoped. As NPR reports, the self-proclaimed “raccoon capital of the world” has been unable to outwit some of the city’s cleverest "trash pandas."

For years, Torontonians have struggled to contend with the city’s booming raccoon population and its insatiable appetite for old pizza, overripe bananas, and just about everything else that gets thrown out with the trash. In 2016, the city spent CA$31 million (about US$24 million) on waste bins that were specially designed to keep furry scavengers out. To open one up, a rotating handle on the lid must be turned to unhinge a gravity lock. The hope was that raccoons, which lack opposable thumbs, wouldn’t be able to break in.

Cameras cast doubt on that theory. In a heist that would make National Treasure's Nicolas Cage proud, footage uploaded to YouTube by the Toronto Star shows a determined mama raccoon cracking the code to open the lid and get to the good stuff inside.

Even without thumbs, raccoons have nimble paws. On top of that, urban raccoons boast some serious street smarts. One study by raccoon expert Suzanne MacDonald revealed that raccoons knew to avoid busy intersections, and another study found that city raccoons are better than their country counterparts at figuring out how to open garbage can lids.

Research from the early 1900s showed that raccoons could crack 11 out of 13 locks—which included latches, levers, buttons, hooks, and bolts—to open a box with food inside. As for the episode seen above, Toronto officials and an employee from the garbage can company said broken bins are to blame. The faulty bin was replaced, but the camera kept rolling, and footage showed that raccoons were able to knock over and break into the new bin, too.

This time, the bin manufacturer blamed the breach on a faulty handle. On the bright side, the city reported that these break-ins aren’t widespread. Out of nearly 500,000 bins, only 24 raccoon-related problems were reported.

MacDonald has been tracking whether the city’s “very fat” raccoons have lost any weight since the new bins have been rolled out. While the results aren't yet conclusive, “they’re not starving to death, that’s for sure,” she told Toronto Star reporter Amy Dempsey.

[h/t NPR]

How You Can Help Animals Affected by Hurricane Florence

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iStock

If you've ever considered rescuing a pet, now's the time to take the plunge: You could save an animal's life if you choose to adopt from a shelter in the path of Hurricane Florence.

With the Category 1 storm making landfall over the Carolinas this week, government officials have urged as many as 1.7 million residents to evacuate their homes. As a result, local animal shelters are scrambling to find homes for abandoned pets before the worst of the storm hits, and if they aren't able to place them in time, some animals will have to be euthanized.

That makes now the perfect time to adopt a pet if you're in the position to do so. Some shelters, like the Pender County Animal Shelter in Burgaw, North Carolina, have even waived their adoption fees in an effort to encourage more people to take pets home.

If you can't make a commitment to owning a pet at this time, fostering is also an option. Most shelters in the storm path will gladly place pets with someone who can give a dog or cat shelter until it's safe for them to return to the area. And if that's still not a possibility for you, you can help shelters by making a monetary donation. Transporting pets and making sure they're spayed, neutered, and vaccinated costs money, and shelters can use donations to help more pets get out the door and into safe homes.

The Charleston Animal Society, the Greenville Humane Society, the Humane Society of Charlotte, and the Pender County Animal Shelter are just a handful of animal shelters in need of assistance. You can also look at specific requests for support local shelters have made through this website.

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