The Koala
Inroduction
The koala is the Australian jewel. It has very furry, ash colored
hair, a rubbery black nose, sharp claws, fuzzy ears, and a grizzly
personality, or should I say, koalality. If you kill a koala, you'll make a
million off their fur! They would sell the fur to coat companies and make coats out of
koala fur. Well, sadly enough, too many people are making
millions on koalas. That's why they're endangered species.
Habitat
The koala is distributed along the eastern coastal semi-tropical
forests of Australia, ranging from north Queensland, New South Wales,
Victoria, and a small area in the south of Australia.
Breeding
The male koala and the female koala have two very different
mating calls. When humans reach their sexual maturity at around the age of 14 or 15,
koalas reach their sexual maturity at the age of two. The female produces one baby every
other year. The koala almost never produces twins. In the female's pouch, there are two
nipples. The female koala gives birth after a 20-35 day gestation period. When the joey
(baby koala) is born, it is no longer than 2 cm and weighs no more than a 1/2 gram. The
joey stays in its mother's pouch for 5-7 months. The term ?joey? is used when you are
talking about a baby marsupial. The mother gives ?pap? to the joey, a liquid from the
caecum (which is similar to the human organ, appendix.) This is thought to give the joey
the ability to eat only eucalyptus leaves. When the joey emerges from the pouch, it
clings to its mother for another seven months. The joey stays with its mother for
another three or four years, until it is fully grown.
Diet
Koalas eat eucalyptus and don't drink water. I guess that's how they
got their name. In the aboriginal language, ?koala? means ?no drink
water.? But, the koala does drink water, only when it is ill. Out of the 350
species of eucalyptus, the koala can only eat 20, will only eat 5, and only
prefers to eat a certain one.
Population and Extinction
Since the koala population has dropped since 50% since the turn of
the century, the Australian government passed a law banning anything
harmful to the koalas. At first, in the 1920's they were killed for
their fur. Then, somehow, a high percentage of them became infected
with a very contagious disease, chlamydia psittaci. Chlamydia psittaci
causes blindness, pneumonia, and for females, sterilization. It has slowed down a lot
since it was first introduced to the koala population, but the virus is still going
around (chylamydia psittaci is an endangered virus.) The koala population is also still
falling due to destroyed habitats. The developers are coming into koala habitat and
cutting down eucalyptus, selling it and building homes. By the 2030's, the koalas will
have no place to live. Now, sadly, in Sydney, koalas must cross the street to get to
another eucalyptus tree. They have to go to another eucalyptus tree every once and a
while because that tree is the same tree from the same forest. A lot of koalas are now
becoming roadkill.
General Information
The koala is a one of a kind animal. It is the only one of its kind.
There are two sub-species of koala though, in which there is the
tiniest difference. The southern one has a darker colored fur than the northern because
it is colder in the south. The koala has only one relative, the wombat. Koalas and
wombats share a common ancestor from some 25 million years ago on the landmass Lauasia
(an ancient landmass that separated to make South America, Africa, and Australia.) Most
people think that the koala is related to bears, that is not true, the koala is an
aboreal (tree dwelling) bear. Most people also think that the koala is not harmful,
that's wrong. The koala is more like a grizzly bear than a teddy bear. The koala is
dangerous because of its extremely sharp claws. Its scientific name is Phascolarctos
(pouched bear)cinerus (ash-colored.) An adult four year old koala eats 1.3 kg. (3 lb.)
of eucalyptus per day. It also weighs 13.6 kg. (30 lb.) and is 60-85 cm. (21-33 in.)
The koala sleeps a lot. The koala is also nocturnal, that's why the koala exhibit at the
zoo is always boring. The eucalyptus that the koala eats is very impor
tant to them because if they change to a different forest, it could be fatal because they
can usually only eat one species of eucalyptus.
Help the Furballs!
There are lots of ways that we can save the koalas. First of all, we
can stop cutting down the eucalyptus trees. Second of all, BRAKE FOR
KOALAS! Third, there are hundreds of save the koala associations world
wide. Another reason koalas are dying is because of fires. Most of these fires come
from careless smokers. If you go to Australia one day and you see someone smoking, tell
them to make sure that they put it out. There is a koala hospital in South Queensland
that is building a 24-hour koala hospital. If you want more information on the Save the
Koala Campaign, visit http://onthenet.com.au/~jbergh/koala1.htm. You can write the
Australian Koala Hospital Assosiation, Inc. at jbergh@onthenet.com.au or snail mail them
at The Australian Koala Hospital Assosiation, Inc.^P.O. Box 2379^Nerang Mail Centre^QLD
4211 AUSTRALIA. A lot of people are also going up and protesting against the developers
that knock down the habitat of koalas.
Bibliography
Gaynor, Beth. Columbus Zoo: The Animals: Koala,
http://ourworld.compuserve.com/homepages/BGa ynor/docent.htm (Columbus:
compuserve.com)
Encyclop?dia Britannica, 1992 ed., 6:922, 23:357, 8:642-3. (Chicago: Encyclop?dia
Britannica, Inc.)
S. Bahr, Lauren, e.d. & Johnston, Bernard, e.i.c. Collier's Encyclop?dia, 1992 ed.,
3:253, 14:129. (New York: Macmillan Educational Company)
Encyclop?dia Americana, 1996 ed., 16:526, 18:371. (Danbury: Grolier, Inc.)
H. Harris, William, e.d. & S. Levey, Judith, e.d. The New Columbia Encyclop?dia, 1975
ed., p. 1491 (New York: Columbia University Press)
Bergh, John. Austrailian Koala Hospital Assosiation, Inc.: Koala Facts Sheet,
http://onthenet.com.au/~jbergh/koala2.htm (Sydney: onthenet.com)
Bergh, John. Austrailian Koala Hospital Assosiation, Inc.: Koala Facts Sheet,
http://onthenet.com.au/~jbergh/koala4.htm (Sydney: onthenet.com)
Bergh, John. Austrailian Koala Hospital Assosiation, Inc.: Koala Facts Sheet,
http://onthenet.com.au/~jbergh/koala1.htm (Sydney: onthenet.com)
World Book Encyclop?dia, 1996 ed., 11:361 (Chicago: World Book, Inc.)
Payne, Oliver. ?Koala? Out on a Limb,? National Geographic Magazine, April, 1995
(Washington, D.C.: National Geographic Society Press)
Academic American Encyclop?dia, 1994 ed., 12:103. (Danbury: Grolier, Inc.)
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