Poison won’t kill blood-sucking bed bugs

BEDbug

EMBARGOED FOR RELEASE: 13-APR-2016 18:00 GMT. The common bed bug, Cimex lectularius L. See NATIONAL copy NNBUGS. Pesky blood sucking bed bugs are not being killed by insecticides – because they have grown thicker skins. There has been an epidemic in a new breed of ‘super bed bugs’ in the past two decades after they building up a resistance to a common insecticide. The oval-shaped, flat and up to 5mm long insects live in cracks and crevices in and around the bed and crawl out at night to feast after being attracted by body heat and carbon dioxide. And global travel has been blamed for a recent resurgence of bed bugs in homes as the creatures hitch a ride on clothing or in luggage. Previous research found the parasites have developed a tolerance to neonicotinoids or neonics because of their widespread use. And now a new study found the pests have developed a thicker cuticle that enables them to survive exposure to commonly used poisons.

Pesky blood sucking bed bugs are not being killed by insecticides – because they have grown thicker skins.

There has been an epidemic in a new breed of ‘super bed bugs’ in the past two decades after they building up a resistance to a common insecticide.

The oval-shaped, flat and up to 5mm long insects live in cracks and crevices in and around the bed and crawl out at night to feast after being attracted by body heat and carbon dioxide.

And global travel has been blamed for a recent resurgence of bed bugs in homes as the creatures hitch a ride on clothing or in luggage.

Previous research found the parasites have developed a tolerance to neonicotinoids or neonics because of their widespread use.

And now a new study found the pests have developed a thicker cuticle that enables them to survive exposure to commonly used poisons.

PhD candidate David Lilly of the University of Sydney said: “The new findings reveal that one way bed bugs beat insecticides is by developing a thicker ‘skin.’

“Bed bugs, like all insects, are covered by an exoskeleton called a cuticle.

“Using scanning electron microscopy, we were able to compare the thickness of cuticle taken from specimens of bed bugs resistant to insecticides and from those more easily killed by those same insecticides.”

Comparing the cuticle thickness of the bed bugs revealed a stunning difference – the thicker the cuticle, the more likely the bed bugs were to survive being sprayed by insecticides.

This could explain why failures in the control of bed bug infestations are so common.

But the battle is not lost in eliminating the tiny small blood-sucking insects.

Mr Lilly said: “If we understand the biological mechanisms bed bugs use to beat insecticides, we may be able to spot a chink in their armour that we can exploit with new strategies.”

He added measuring the thickness of bed bug cuticle wasn’t an easy task.

He said: “The findings are exciting but collecting data was frustrating.

“Taking microscopic measurements of bed bug legs requires a steady hand and patience, lots of patience.”

The study was published in PLOS ONE.

Read more: http://www.westerndailypress.co.uk/qwdqwdqwdq/story-29106252-detail/story.html#ixzz45oy0Byqz

 

 

#SayNOtoPESTICIDES!

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 )

Twitter picture

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

Facebook photo

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

Google+ photo

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

Connecting to %s