Ben Balzer wrote:
>Interesting, I once read that there were no cattle or horses South
>of the Sahara Desert, because they were killed off by
>trypanosomiasis
>(sleeping sickness) from the tsetse fly.

Yes that are the exate words appropiate for explaining
that professors theory. Mosquitos were the tsetse-fly,
and you mentioned the desease.

Countries struggling with malaria and the known disatrous
desease symptoms suggest how a bit impact a spreading desease
can have on a certain region.

>Insect-borne disease has had a major role in history.
>Caesar drained the
>swamps around Rome to prevent malaria- this must have been a big
>help.

Horse topic:  :-)
Africas horses (Zebras) seem to have that striking stripes,
so why shouldn't other horses have that possibility in their genes-
despite that then they are less hidden against the
predators.

TseTse-fly won't see them, but lions probably better.

Whatever danger is the biggest - it may even change from eon to eon.

regards,
Amadeus

Still thinking about stripes agains mosquitos ? :-)
Anyway- its raining today...


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