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09_06_2016, Cristina Botias, Quantifying exposure of bees to pesticides

09_06_2016, Cristina Botias, Quantifying exposure of bees to pesticides

Uploaded by ebddsa dsa, 10/06/16 15:03
In recent years, an intense debate has been generated about the environmental risks posed by neonicotinoids, a group of widely-used, neurotoxic insecticides. When these systemic compounds are applied to seeds low concentrations are subsequently found in the nectar and pollen of the crop and so they can be consumed by bees. A key point of controversy is whether bees consume enough of these compounds during the flowering period of the crop to do them significant harm. Thus, there is a need to understand the routes of exposure for bees and the levels present in the pollen and nectar of the flowers they visit. In this seminar I will show the concentrations of neonicotinoid insecticides that bees are exposed to when they forage in agricultural landscapes, and I will comment on the work in progress where I am assessing the effect of field-realistic levels of pesticides on bumblebee colonies.
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foodle
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Lino
For each pesticide, specific experimental and evaluation methods are needed to ensure that bee exposure is accurately measured. This is important to protect the survival of bees slope and maintain ecological balance.
Posted on 17/04/24 04:24.

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Last Updated by ebddsa dsa
10/06/16 15:03
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In recent years, an intense debate has been generated about the environmental risks posed by neonicotinoids, a group of widely-used, neurotoxic insecticides. When these systemic compounds are applied to seeds low concentrations are subsequently found in the nectar and pollen of the crop and so they can be consumed by bees. A key point of controversy is whether bees consume enough of these compounds during the flowering period of the crop to do them significant harm. Thus, there is a need to understand the routes of exposure for bees and the levels present in the pollen and nectar of the flowers they visit. In this seminar I will show the concentrations of neonicotinoid insecticides that bees are exposed to when they forage in agricultural landscapes, and I will comment on the work in progress where I am assessing the effect of field-realistic levels of pesticides on bumblebee colonies.
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