Did Commercialization Kill the Bees?

Last Chance to Save Wild Bumble Bees

In the early 1990s, the USDA conducted risk assessments of the interstate transport of bumble bees for commercial greenhouse pollination, particularly tomatoes. Because of the risk of introducing non-native pests and diseases into new areas, they concluded that commercially reared bumble bees should not be shipped beyond their native range (They also prohibited the importation of bumble bees from outside the country, with the exception of Canada). At the time, it seemed a simple solution to growing concerns that the fledgling industry had taken off before adequate regulatory measures were put in place.

There was already some concern that the genie had gotten out of the bottle. Between 1992 and 1994, queens of two North American species—Bombus impatiens and Bombus occidentalis—were sent to Europe where they were reared in facilities along side European bumble bees. The colonies were then shipped back to the United States and distributed for crop pollination.

Fast forward to 1997. The commercial bumble bee rearing industry in North America suffers such catastrophic losses of Bombus occidentalis, a western bumble bee that it wipes out nearly its entire stock. In the following years, scientists begin to observe the precipitous decline of several North American bumble bee species, all belonging to the same subgenus. Dr. Robbin Thorp, a bee researcher and Professor Emeritus at UC Davis, upon learning of the commercial declines wonders if there is some connection. Could the wild bees be dying of the same disease that swept through commercial facilities?

Full Story Adam Federman: Did Commercialization Kill the Bees?.

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