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Greenhouse bees spread disease to wild bees
Posted By admin On July 24, 2008 @ 10:19 am In Sci Tech | Comments Disabled
Thursday, July 24, 2008
Disease spread to wild bees from commercially bred bees used for pollination in agriculture greenhouses may be playing a role in the mysterious decline in North American bee populations, researchers said on Tuesday.
Bees pollinate numerous crops, and scientists have been expressing alarm over their falling numbers in recent years in North America. Experts warn the bee disappearance eventually could harm agriculture and the food supply.
Scientists have been struggling to understand the recent decline in various bee populations in North America. For example, a virus brought from Australia has been implicated in massive honeybee deaths last year.
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Canadian researchers studied another type of bee, the bumblebee, near two large greenhouse operations in southern Ontario where commercially reared pollination bees are used in the growing of crops such as tomatoes, bell peppers and cucumbers.
The researchers first observed that the commercial bumblebees regularly flew in and out of vents in the sides of the greenhouses, escaping from the facilities.
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