Tracking pesticide behavior to protect pollinators


23468968398_6e157b12ff_z.jpg
Beneficial insects, like the bee shown above, can be harmed by chemical pesticides (flickr). 

Julia Poska| September 27, 2018

A recent study from Japan’s Osaka University aims to help protect pollinators from harm by studying how insects metabolize pesticides.

Researchers sliced fruit flies into very thin layers with a special technique developed to keep their delicate features in tact. They used a laser to glean tissue from the layers, which they analyzed to see how Imidacloprid-a, a common agricultural pesticide, spread through the fruit fly bodies.

Imidacloprid-a is one of a class of pesticides called neonicotinoids, which have received a lot of negative attention for being linked to declining bee populations. France recently banned five types of neonicotenoids, including imidacloprid, in an effort to protect pollinators.

Scientific studies have yielded mixed results on the actual effects of neonicotinoids on bees, however. Some have found that bees can get addicted to the nicotine derivatives, and claim they kill. Others say that only certain species are affected, and that concentration levels in the field are insufficient to do real harm.

This report, published in the journal Analytical Sciences, may help bring clarity to the confused issue. It is the first of its kind, due to the exceptional difficulty of  preparing and imaging detailed tissue specimens of fruit flies. The researchers hope others will use their technique to look further into pesticide metabolism in the future.

 

 

 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s