Cockroach 'Superbugs' Becoming Near-Impossible to Kill.

Pedro_P

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A German cockroach (Blattella germanica) samples a gel blob of insecticide.
Credit: John Obermeyer/Purdue Entomology
▼ In the ongoing evolutionary arms race between hardy cockroach pests and the humans creating poisons to kill them, it looks like the roaches may be winning.
German cockroaches — small, swift, prolific insects that live only around people — are quickly evolving resistance to a range of pesticides at the same time and may soon be nearly impossible to killwith chemicals alone.
Exterminators typically rely on different classes of toxic chemicals to eliminate roaches; if the insects happen to be resistant to one class, they'll usually succumb to another. However, researchers recently discovered that German roaches (Blattella germanica) are developing cross-resistance to a range of insecticides, which means that the roaches' offspring are born already impervious to toxins that they haven't directly encountered.
And this sometimes takes place within a single generation, the scientists reported in a new study.
"We didn’t have a clue that something like that could happen this fast," said study co-author Michael Scharf, a professor and chair with the Department of Entomology at Purdue University in Indiana.
"Cockroaches developing resistance to multiple classes of insecticides at once will make controlling these pests almost impossible with chemicals alone." Scharf said  in a statement.
For the study, the researchers tested the effects of three different courses of insecticideson roach populations in apartment buildings in Danville, Illinois, and in Indianapolis, Indiana, over six months. They exposed one group of roaches to a single insecticide. (▪ ▪ ▪)

► Please, continue reading this article here: Source

soothsayer

Terrible to read. They should not take over as a species!

Pedro_P

The best solution is a mixture of equal parts of boric acid and powdered sugar... It is the nemesis of cockroaches.

Rhett_Bassard

soothsayer 29-6-2019 12:18 AM
Terrible to read. They should not take over as a species!

Yes, terrible, in that we, dirty humans, are to blame as explained in the well-sourced document from @Pedro_P , i.e.
"

German cockroaches — small, swift, prolific insects that live only around people.

"

soothsayer

Pedro_P 29-6-2019 03:03 PM
The best solution is a mixture of equal parts of boric acid and powdered sugar... It is the nemesis  ...

Thanks. This is unique. I hope to try this if i face this problem

Pedro_P

soothsayer 30-6-2019 12:46 AM
Thanks. This is unique. I hope to try this if i face this problem

Well, when I was studying in Viña del Mar in Chile, the first months I lived in an old house and unfortunately those cockroaches wanted to make me lose patience...
A classmate gave me that recipe (boric acid powder and mixed powdered sugar), and that was more effective than the most popular insecticides.
From those years until now, I do not think that cockroaches have developed resistance, although seeing how resistant they are, I would not be surprised... LOL

soothsayer

thanks again. told my friends in the neighboring towers and they were surprised. now that you say it works,  they would be delighted!

Jbnast

A new class of super roaches?