Widely used pesticide toxic to honeybees

Jul 18, 2013

An international research team—Drs. Stephan Caravalho, Luc Belzunces and colleagues from Universidade Federal de Lavras in Brazil and Institut Nationale de la Recherche Agronomique in France - concludes that the absence of mortality does not always indicate functional integrity.

Deltamethrin, fipronil and spinosad, widely used pesticides in agriculture and home pest control, were applied to healthy honeybees and proved toxic to some degree irrespective of dosage.

At sublethal doses, the pesticides modulated key enzymes that regulate physiological processes, and immune responses, such as homing flight, associative learning, and brood development. Sensitivity to these insecticides and foraging range (as far as 1.5 to 3 km) make A. mellifera an optimal candidate for monitoring the environmental impacts of pesticides.

Explore further: Insect mating behavior has lessons for drones

Related Stories

Pesticide combination affects bees' ability to learn

Mar 27, 2013

Two new studies have highlighted a negative impact on bees' ability to learn following exposure to a combination of pesticides commonly used in agriculture. The researchers found that the pesticides, used ...

Study: Pesticides found in wine

Apr 04, 2008

A European environmental group said pesticides used on grapes were found in 35 of the 40 bottles of wine they tested.

Even low doses of insecticides put honeybees at risk

Sep 01, 2011

Scientists in France have discovered that honeybees are at a higher risk of dying from infection by Nosema ceranae (N. ceranae) when they are exposed to low doses of insecticides. The results, presented in ...

Recommended for you

Insect mating behavior has lessons for drones

23 hours ago

Male moths locate females by navigating along the latter's pheromone (odor) plume, often flying hundreds of meters to do so. Two strategies are involved to accomplish this: males must find the outer envelope ...

Godwits are flexible... when they get the chance

May 29, 2015

Black-tailed godwits are able to cope with unpredictable weather. This was revealed by a thorough analysis of the extraordinary spring of 2013 by ecologist Nathan Senner of the University of Groningen and ...

Do you have the time? Flies sure do

May 28, 2015

Flies might be smarter than you think. According to research reported in the Cell Press journal Current Biology on May 28, fruit flies know what time of day it is. What's more, the insects can learn to con ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.