Tag: Honey bee

Sunday Set: Countryside

Fresh air …

Out of the city and into the countryside the past few days, enjoying windswept grain fields, swimming holes, wild berries and ripening fruit trees in mountain orchards. A few scenes from  Upper and Lower Austria in this early summer set. Visit the Summit Voice Sunday Set archive for more travel pics, or head over to our online gallery at FineArt America for a full selection of nature and landscape photography.

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Biodiversity: Pesticides turns bees into picky eaters

Bee colonies are declining dramatically in the U.S. and Europe. PHOTO BY BOB BERWYN.

Exposure to neonicotinoid also reduces bees’ ability to communicate about food sources

By Summit Voice

SUMMIT COUNTY — There’s more evidence that even small doses of common pesticides are at least a factor — if not the main cause — of a dramatic decline in bee populations that’s threatening pollination of both wild and domesticated plants.

By closely studying the response of individual bees to the chemical, biologists at the University of California San Diego showed that the bees turn into picky eaters. The study also showed that bees exposed to the pesticide reduced the number of “waggle dances” between fourfold and tenfold, reducing the number of nestmates recruited to good food sources.

Bee colonies in the U.S. and Europe have declined by about one-third since 2006 in what has been called colony collapse disorder. In the last couple of years, research has established strong direct links between the decline and common agricultural pesticides, including several recent European studies showing that colonies exposed to neonicotinoids produce fewer queen bees. Continue reading “Biodiversity: Pesticides turns bees into picky eaters”