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US sees massive drop in bumblebees: study

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WASHINGTON — Weakened by inbreeding and disease, bumble bees have died off at an astonishing rate over the past 20 years, with some US populations diving more than 90 percent, according to a new study.

The findings are of concern because bees play a crucial role in pollinating crops such as tomatoes, peppers and berries, said the findings of a three-year study published in the Proceedings of the National Academy of Sciences (PNAS).

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Similar declines have also been seen in Europe and Asia, said Sydney Cameron, of the Department of Entomology and Institute for Genomic Biology at the University of Illinois, the main author of the study.

“The decline of bumble bees in the US is associated with two things we were able to study: the pathogen Nosema bombi and a decline in genetic diversity. But we are not saying Nosema is the cause. We don’t know,” said Cameron.

“It’s just an association. There may be other causes.”

He added that the decline is “huge and recent,” having taken place in the last two decades.

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Nosema bombi is a bee pathogen that has also afflicted European bumble bees.

Researchers examined eight species of North American bumble bees and found that the “relative abundance of four species has dropped by more than 90 percent, suggesting die-offs further supported by shrinking geographic ranges,” said the study.

“Compared with species of relatively stable population sizes, the dwindling bee species had low genetic diversity, potentially rendering them prone to pathogens and environmental pressures.”

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Their cousins, the honey bees, have also experienced catastrophic die-offs since 2006 in a phenomenon known as “colony collapse disorder,” though the causes have yet to be fully determined.

Bumble bees also make honey, but it is used to feed the colony, not farmed for human consumption.

They are however raised in Europe for pollinating greenhouse vegetables in a multi-billion-dollar industry that has more recently taken off in Japan and Israel and is being developed in Mexico and China, Cameron said.

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“We need to start to develop other bees for pollination beside honey bees, because they are suffering enormously,” he added.

There are around 250 species of bumble bee, including 50 in the United States alone.

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… then let us make a small request. Like you, we here at Raw Story believe in the power of progressive journalism — and we’re investing in investigative reporting as other publications give it the ax. Raw Story readers power David Cay Johnston’s DCReport, which we've expanded to keep watch in Washington. We’ve exposed billionaire tax evasion and uncovered White House efforts to poison our water. We’ve revealed financial scams that prey on veterans, and efforts to harm workers exploited by abusive bosses. We’ve launched a weekly podcast, “We’ve Got Issues,” focused on issues, not tweets. Unlike other news sites, we’ve decided to make our original content free. But we need your support to do what we do.

Raw Story is independent. You won’t find mainstream media bias here. We’re not part of a conglomerate, or a project of venture capital bros. From unflinching coverage of racism, to revealing efforts to erode our rights, Raw Story will continue to expose hypocrisy and harm. Unhinged from corporate overlords, we fight to ensure no one is forgotten.

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GOP lawmaker cut the mic on black woman’s facts — but let white men spew ‘lunacy and lies’: report

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The list of confidants and friends who were fêted by the late financier and alleged sex trafficker Jeffrey Epstein included a number of prominent scientists. Among the eye-popping names that appeared on the list: the late cosmologist Stephen Hawking, Nobel-winning physicist Murray Gell-Mann, evolutionary biologist Stephen Jay Gould, physicist Frank Wilczek, neurologist Oliver Sacks, and geneticist George M. Church.

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