1
5-
Friday, November 13,1987/The Battalion/Page 3
State and Local
8-
11 Researchers study effects
of environment on roaches
Wild
; tin
S IS
on i
By Mary Kay Mulvaney
Reporter
Texas A&M researchers are
Idj, studying the effects that seasonal
changes and other factors have on
one of nature’s most enduring crea
tures— the roach.
John Paige, who is working on his
I doctorate in urban entomology at
Texas A&M, is doing research on
German cockroaches to determine
stloi how seasonal changes affect the be-
ipet havior and population dynamics of
domesticated roaches.
“We pretty much know that there
|aren’t as many roaches in the winter
because you just don’t see them,”
„ Paige said. “We are studying the in-
vfltricacies of the population. Does it
BlUflaffect the age and sex? Is it the
■ adults running around in the winter
■ or the nymphs (young roaches)?”
Harry Howell, a research asso-
■ ciate in urban entomology, ex-
■ plained that there are 3,000 species
I of roaches in the world and 40 spe-
■ cies in Texas. Of the 3,000 species,
^only six live in households, which
leaves a large percentage of roaches
that live in the wild.
The two most common species of
roaches that live in homes are the
German cockroach and the brown-
banded cockroach.
Paige recently assisted five stu
dents with a speech communications
project to help the community be
come aware of steps it could take to
prevent roach infestation in homes
or places of business.
It helps to not keep paper sacks or
cardboard boxes that are not needed
around the house or place of busi
ness because that is where these
roaches tend to lay eggs, he said. Al
though this hasn’t been backed up
by research, it just makes common
sense, he said.
He also suggested storing break
fast cereals in plastic or glass con
tainers instead of leaving them in the
cardboard boxes that they come in.
As part of their research, the five
students went with Paige to the ento
mology lab to observe these pests
that infest the Bryan-College Station
area. German cockroaches are their
main area of interest, but they also
saw roaches from Madagascar,
I Africa.
^ The Madagascar roaches range
PICUS ~T~RELEL3, M AN GitNQ BASKETS , CACTUS, FE-RN3, PALMS
SATURDAY
NOV 14, 1387
IOa.m-2pm.
dO M MO MS
qua a
UJ 3&OCK ST.
plant
SAL *
LAMAR ST
Photo by Sam B. Myers
These Madagascar cockroaches hiss in order to fend off predators
and to attract mates.
7 ,'
from two to three inches long, are
black and tan, have hard, ribbed
backs — and hiss.
Although it is possible that some
of the roaches have escaped from
the lab, it is unlikely that too many of
them could survive, Howell said.
“Anything possibly could escape,
but they wouldn’t be able to live in
this climate,” Howell said. “They
wouldn’t be able to survive one mild
winter here.
“I’m sure we’ve had many escap
es.”
He said it is important to know
which roaches live in the homes and
which ones live in the wild when try
ing to control them.
&
that
“If a German roach appears in
your house, you know they’re here
to stay,” he said. “But if a large, his
sing, Madagascar roach appears you
know that it is probably the only one
that is in your house.”
Roaches are not as bad as they
seem, Howell said, explaining that
they are important in recycling nu
trients.
Roaches are constantly cleaning
themselves, he said. After a period
in isolation, it is hard to scrape any
bacteria off the pests, he added.
“If they come walking across your
Thanksgiving table then they’re bad,
but out in the wilderness they’re
good,” he said.
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