The J-TAC (Stephenville, Tex.), Vol. 53, No. 19, Ed. 1 Wednesday, February 28, 1973 Page: 4 of 12
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Page 4
February 28, 1973
The J-TAC
Feeding Behavior In Sharks Discussed By P. C. McRoberts
by Janet Matteson meeting of the Beta Beta
Feeding behavior in Beta Biological Society. Her
sharks was discussed by P.C. talk was based upon her
McRoberts at the Feb. 22 summer study of captive
sharks at the A&M Marine
School in Galveston.
She said that her studies
and observations suggest
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Quality & Service
STEPHENVILLE
The new seersucker short shorts have just arrived
for spring. They have your choice of lace-up or
button-up fronts and pockets.
Also for spring, we have a new selection of halter
and shrink tops in a variety of colors and designs.
Hip hugger pants have made the scene again with
wide cuffed legs and patch pockets fastened with
gold buttons. A gold buckle fastens the hip belt for
the complete look.
sharks in captivity behave
differently from wild
sharks.
"Sharks in captivity have
an ample opportunity to go
nuts'' stated Ms.
McRoberts, and they are
conditioned to survive in a
completely artificial
environment.
Her studies included that
of the bull, nurse and lemon
sharks; all of which are very
dangerous when provoked.
The nurse shark has fleshy
barbels on its lips, which aid
sucking. Ms. McRoberts also
stated that this type of
shark does not have to swim
constantly to breathe
because its gill apparatus is
different.
Feeding Frenzies
Ms. McRoberts discussed
feeding frenzies, which are
characterized when a mass
of sharks, wild or in
captivity, seem to go crazy
at the sight of blood or at
the smell of fresh meat. If
one shark is injured, all the
other sharks will self-feed
on him. Feeding frenzies
can be started when a shark
bumps something of his
same habitat, and other
sharks begin circling it with
hun. When one shark finally
attacks the object of
circling, self-feeding begins.
• "Feeding frenzies are
postulated, to be a method
of population control of
large sharks who have no
natural enemies," stated Ms.
McRoberts.
"Sharks are extremely
aggressive, but do not
generally attack unless they,
are provoked. They hunt by
the sense of smell, and will
eat anything in their range
if they feel like it," stated
Ms. McRoberts. "Their
sense of sight is reasonably
good," she said, which is a
matter of distinguishing
moving objects against a
turbid background;- but
their depth perception is
bad. Sharks can be affected
by metal pollutants because
they interfere with their
breathing and respiration.
They can accept a change in
salinity if they have time to
adjust.
Shark teeth are generally
triangular shaped, very
sharp and pointed, and
most have serrated edges,
according to Ms.
McRoberts. A shark bite is
shaped like a half-moon
because the lower jaw is so
far back under the head.
Ms. McRoberts stated
that the study of sharks is a
good field because not
much has been done in this
field. Feeding of sharks is
about the only area which
has been researched, and
not much is known or being
researched in the areas of
reproduction of sharks and
how pollution affects
sharks.
Business Club
Elects Officers
The Business Club elected
new class officers at their
Feb. 19 meeting. The new
officers are: Sally Black,
president; Carolyn Word,
vice-president; Karen Canales,
secretary; Phronsie Foulks,
treasurer; and Dottie Holston,
reporter.
A club activity committee
was also elected at the meeting.
Elected as new committee
chairman was Kent Munson,
with committee members: Dave
Mahafey, Charles Carter, Pat
Ferguson, and Bill Rice.
The only qualification to join
the Business Club, is to be
interested in business. Dues for
the Business Club are $2 per
semester, or $4 for both
semesters:
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The J-TAC (Stephenville, Tex.), Vol. 53, No. 19, Ed. 1 Wednesday, February 28, 1973, newspaper, February 28, 1973; (https://texashistory.unt.edu/ark:/67531/metapth141262/m1/4/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting Tarleton State University.