Re: About those Piranha Bugs - and more vileness

----- Original Message -----
From: "Robin Paul" <Robin.Paul@tesco.net>
> A possibility is that the mounds are mud structures in which the PBs
rest-
> only a migrating herd of Buffaloids can break the mounds, and that
triggers
> the feeding behaviour of the PBs. The PBs therefore needn't be
territorial,
> in the sense of defending a territory- the victims have just acted
like
food
> at feeding time.

Over evolutionary times, the herd animals would learnt or evolved to
avoid
damaging the mounds, unless the toll was *very* low.

Greetings
Karl Heinz