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RE: 'Voting with feet' for/against Low vs. Hi Dose Rad! :-)
Jim,
I am a little confused. How does the woodlice detect the radiation? By
smell? If that is the case, does the woodlice detect radiation or some
byproduct, like ozone? I would say this is not a very credible experiment.
Have a nice weekend.
-- John
John Jacobus, MS
Certified Health Physicist
3050 Traymore Lane
Bowie, MD 20715-2024
E-mail: jenday1@email.msn.com (H)
-----Original Message-----
From: Jim Muckerheide [mailto:jmuckerheide@cnts.wpi.edu]
Sent: Wednesday, May 29, 2002 2:12 PM
To: radsafe@list.vanderbilt.edu; rad-sci-l@ans.ep.wisc.edu
Subject: 'Voting with feet' for/against Low vs. Hi Dose Rad! :-)
Friends, FYI.
Our great friends Drs. Yamada and Miyachi, and Dr. Kanao, dramatically
demonstrate that organisms that can sense radiation at 15 and 30 times
background, SEEK the rad source at 15 times background, and REJECT the rad
source at 30 times background!
This is even more dramatic than, if not as compelling as, the rejection or
elimination of tumors by the effect of LDR!
. . .
Terrestrial isopods have chemoreceptors (the olfactory system) on the
terminal segment of their antennae. An additional experiment confirmed the
involvement of these antennae in the radiation effect on behavior. After the
excision of the antennae, no
<http://www.sciencedirect.com/scidirimg/entities/beta.gif> -taxis response
was observed. The behavior of the group exposed to the source giving 30
times the background tended to decrease gradually in the area of the source,
and the individuals aggregated in the area away from the source. Thus, the
olfactory sensor in the antennae may be an important organ involved in the
prompt response to radiation exposure, and the discrimination of the
radiation field strengths of radioisotopes.
. . .
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