Displaying posts tagged with

“behavioral biology”

Predator MX: Jack the Rippler

No, not a new hunter-killer drone, neither is it the n+1 installment in the sci-fi horror series. Rather, Myxococcus xanthus. Again.     M. xanthus is a highly cooperative bacterium, as we have already seen: when starved, most cells “commit suicide” while a few form spores, to survive the lean times. But M. xanthus also […]

When is it a good idea to cheat?

I have written before about bacterial cooperation, and how cheating works, up to a point, in an environment of bacterial cooperation. That post talked about bacterial quorum sensing, the collective signaling mechanism by which bacteria construct supra-cellular structures called biofilms. Biofilms are tough multicellular enclosures that allow bacteria to survive and thrive in hostile environments, […]

Goat breath causes aphids to drop to the ground

Some headlines just write themselves… It has been known for some time that an approaching large herbivore causes aphids to abandon ship …err plant. Makes sense since, after all, there’s not much of a point in staying on the particular bit of shrubbery that will be consumed, lock, stalk and barrel by a ravenous forager. […]