exotic species
TRANSCRIPT
In this world contain thousands of exotic
species, some which may have been
imported intentionally, some accidental.
Species could possibly have a negative
impact, while others may be positive.
Exotic species are known as species that
are accidentally or deliberately forced to
migrate to another area of which it
does not belong.
Example: African Killer bees were forced to
move to Brazil due to high demands of
honey production from humans.
• They destroy other birds and their habitat,
smash their eggs and mainly kill adult
blue birds.
• Since North America’s population is descended from
birds, they decided to import them from
Britain. Which they soon realized was a big mistake
• As things kept progressing, the populations of
these species in North America increased to
about 150 billion in the 1940s.
• In agricultural areas, the house sparrow would
quickly deplete the source of grains and seeds
• The exotic fire ants have been damaging
agriculture including: live stock and crops
• It cost a hefty 175 million to
wipe out 99% of the RIFA of
main infestation in Queensland
• The fire ant stings require medical attention
• Fire ants were not a bother until
they became an exotic species
• This species was accidentally shipped to USA
from Alabama by cargo shipping
• Eventually, they started to infest the South/South-West
USA, and areas in Taiwan and Australia
• This beetle became a serious threat to
species residing in the deciduous hardwood trees.
• When larval stages occur, the ALB bores
deep into a tree’s heartwood, where the
nutrients are consumed.
• Consistency in the process could severely damage
the trees
• If the ALB becomes established, it is
estimated 1.2 billion trees will be killed
• They became exotic species by shipping.
• When cargos used to be supported by
wood, the beetle would stick to it
and finally be released in another area
since they were poor fliers.
• Sea lampreys created conflict with other species
(lake trout, lake whitefish, chub, lake herring)
• After wiping out these predators they allowed
other exotic species to also grow in
population which would further harm native species
in that area.
• Sea lampreys became an exotic species due
to the improvements of the Welland Canal
in 1919 which allowed its spread from
Lake Ontario to Lake Erie
• From there, it started gradually spreading further