Re: Ref: Cockroaches--found the answer!

[Jane Coffey <LDRSEduc8Jane@AOL.COM>]

Hi...I went here: (I had time...waiting to get a shower before heading to
CSLA!)

http://search.britannica.com/frm_redir.jsp?query=cockroach&redir=http://www.bi

o.umass.edu/biology/kunkel/cockroach.html

Encyclopedia Britannica Online: (I tried to break it down to make it simpler
to understand):

Why do cockroaches die on their back?
First, few cockroaches die on their back in the wild. Second, they are not
used to living on marble or polished floors, as in our kitchens; so that when
they find themselves lying on their back, they have trouble righting
themselves if there is nothing to grab onto with their legs.

Also, the dead cockroaches we find in buildings have died of insecticides:
they are organophosphate nerve poisons. That nerve poison often inhibits
cholinesterase, an enzyme that breaks down acetyl choline (ACh), a
nuetrotransmitter. With extra ACh in its system, the cockroach often has
spasms that make it flip on its back. Without muscular coordination, the
cockroach cannot right itself, so it dies on its back.

While this doesn't answer your question, it has a LOT of odd "roach" facts:

http://yucky.kids.discovery.com/noflash/roaches/index.html



Jane ;-)
Jane Coffey
President/Founder
THE READ IN!
www.readin.org

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