ever be ommivorous, since a similar Pacific Coast species is
known to stun prey with the violent anapping of a specialized
claw, hence the name, “pistol shrimp.”
It is difficult to
conceive how, living encased in a cylinder of highly enmeshed
filaments of algae, it could feed on anything larger than very
small plankton,
if that,
in addition to the algae.
The simi-
larity of the specific activities found in the viscera of the
shrimp and in the algae, @s shown below, indicate the effect
of food habit upon the radioactivity of the digestive trac:.
Rigili
Runit
d/m/g wet
Shrimp
muscle
viscera
Algae
a/m/g wet
15,000
7,000
110,000
31,000
210,000
36,000
- 103 -