Transcript Adaptations, Natural selection

Adaptations, Natural selection
Giraffe
Herds
Acacia nilotica
Water from the pond
Water contaminated with E. coli
• Long legs giraffe have
diarrhea, while others
have a funny smell in
the urine symptom of
urinary tract infections.
All this symptoms of
water contamination
with E. coli.
• The short legs giraffe
are tolerant to E Coli.
Short legs giraffe are resistance to the
bacteria
• Those giraffe that have
short legs are resistance
to the bacteria.
• They mutated and that
make them tolerant to
it.
Long leg giraffe
• Some of the long legs
get some mareola
berries and they got
better from the
symptoms
• (flip a coin a coin to get
better and survive).
Oxpecker and giraffe
• Giraffes have a
symbiotic
relationship with a
few types of birds,
most notably the
oxpecker. These
birds perch on the
backs of giraffes, and
alert them to
possible predators.
• Play rock paper scissors
to see if you get an
Oxpecker.
TseTse Fly
• The giraffe must deal with
the tsetse fly, which lands
on them and sucks blood.
• Tsetse flies are also
carriers of sleeping
sickness, a dangerous
disease to humans.
• Can giraffes get the
sleeping sickness?
• Giraffes can use their
powerful tails to swat the
flies and get some relief
from the TseTse.
• What kind of adaptation?
Mane Length SHORT
• If you as a giraffe have a
Mane Length that is
SHORT, your tail is not
long enough to get rid
of the Tsetse Fly…
• you will have the
sleeping sickness…
San Antonio Zoo
• 2 Humans came in
Looking for a 2 yellow
Giraffes with blue eyes
• Be careful…they are
already in the savanna!
• Before they transport
the giraffe the humans
cut out of 18 Acacia
Nilotica 7 short Acacia
nilotica to fulfill the
needs of the giraffe on
the way to the zoo.
Fire, Fire
• The savanna 2 and 6
get on fire.
• The giraffe needs to
migrate to the savannas
that did not catch on
fire…
• What kind of
adaptation is this one…
Moving on… Careful
• but be careful…if you
don’t have a Oxpecker
with you… lion, hyenas
and leopards are looking
for food… you can die…
Hyenas, Leopards and Lions… journey
to a new home…Fight or Run!!!
On the way to the new place
• Straight mouth that carry
the gene for arthritis
Giraffe have been seen
eating the carcass of an
antelope and chewing on
dried bones for their
calcium content.
• Dominant or recessive
trait?
• Eating the bones is an
adaptation? What kind?
Competition for food and water
• There are only 4 habitats
for the giraffes in the
African Savanna… only 10
tall trees on each…
competition for food and
water.
• Count the population on
each habitat? Report it on
the board.
• Count how many male
and female survive…
Giraffe Hunter for…leather
• 4 hunters came in to
the savanna to look for
unique features for
skin… taking a total of
4…
Rinderpest virus is back
• The virus is the
rinderpest, which killed
hundreds of giraffes in
the 1880s (see 1890s
African rinderpest
epizootic) is back in the
African Savanna.
• The virus appears and
will kill half of the
population…symptoms
by fever, oral erosions,
diarrhea, tenesmus,
lymphoid necrosis.
• The survivors… develop
immunity to the virus…
Natural selection in
action.
• What kind of
adaptation is this?
• Can it be pass to the
next generation?
• Natural selection in
action.
• Look at the survivor and
characteristics.