Cockroaches may be evolving the ability to avoid common traps by developing an aversion to sugar.
A cockroach infestation in one's home can be a particularly nasty experience and require the services of an exterminator, but now it seems that some mutant German roaches are getting wise to the traps used to catch them and are now able to avoid them. The way they accomplish this is by no longer finding sugar palatable, the substance that is most commonly used as a bait on cockroach poisons.
While this mutation is not present on all cockroaches, it does exist and it appears to be getting more widespread. "It's very important, in terms of effective pest control," said study author Coby Schal. "It's not trivial. It's out there."
"Roaches that have been hard to trap may be a variety that find sugar doesn't taste quite so sweet as bait anymore, a study suggests."
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Source: Sydney Morning Herald
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