New Study reveals impact of Glyphosate on Bees.

beesA study, published in the Journal of Experimental Biology, determined the devastating impact of on bee colonies. (GLY) is a broad used for weed control. Neonicotinoids have previously been associated with colony collapse disorder and a number of cities have taken steps to ban the ; however, it was shown that has the same devastating impact.

The impact of field realistic doses of (GLY) was studies on honeybees who were chronically and acutely exposed to it. The researchers focused on sucrose sensitivity, elemental and non-elemental associative olfactory conditioning of the proboscis extension response (PER) and on foraging related behavior.

Substances that are taken into the hive can remain stored for long periods of time and accumulate until they are used as supplies for the colony. Chemicals accumulated inside the hive could have subtle negative effects, often inconspicuous within the short term, that could impair behavioral processes in the long-term. As a result, honeybees are very sensitive bio-sensors of changes in the environment and respond even to subtle variations caused by pollutants.

The study results determined that chornically exposed to within the range of recommended doses had reduced sensitivity and sucrose and learning performance. Acute exposure causes a significant negative impact on elemental and non-elemental learning and short term memory.

Taken together these results suggests that application of , due to standard spraying, can impact on reward and impair associative learning impacting on the entire colony as a whole.

Honeybees are the main in agricultural ecosystems. Each foraging honeybee makes trips several times a day to gather resources from several miles away. In doing so take any foreign substances present in those resources back to the hive.

Source

Lucila T. Herbert, Diego E. Vázquez, Andrés Arenas and Walter M. Farina. Effects of field-realistic doses of on honeybee appetitive behaviour. J. Exp. Biol. 25 July 2014 as doi:10.1242/jeb.109520

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