It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
"Cockroaches cost the UK economy millions of pounds in wasted food and perishable products. Better understanding of how they seek out our food would allow us to develop better pest control measures, which are frequently ineffective and involve the use of insecticides that can have health side-effects."
In the experiment, hungry cockroaches (Blattella germanica) were released into an arena where they could choose between one of two piles of food. Lihoreau noted that, rather than choosing one randomly and splitting into two groups as would be expected if they were acting independently, the majority of the cockroaches fed solely on one piece of food until it was all gone. By following individual insects, it also emerged that the more of cockroaches there were on one piece of food, the longer each one would stay to feed.
Through simple snowball effect then, most of the cockroaches accumulate on one source. Once identified, a man-made 'foraging pheromone' could be used to improve pest control, making insecticide gels more effective or be used to create an insecticide-free trap. Lihoreau explains; "These observations coupled with simulations of a mathematical model indicate that cockroaches communicate through close contact when they are already on the food source.
This is in contrast with the honeybees' waggle dance or ants' chemical trails, which are sophisticated messages that guide followers over a long distance. Although we think they signal to other cockroaches using a 'foraging pheromone', we haven't yet identified it; potential candidates include chemicals in cockroach saliva, and cuticular hydrocarbons, which cover the insects' bodies."