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.