Most INVASIVE Animal Species Introduced By Humans!!!

Most INVASIVE Animal Species Introduced By Humans!!!


whether it’s for economic reasons for
pest control or simply to introduce an interesting addition to a home or a
state humans have introduced numerous animal species to new unfamiliar
habitats sometimes they introduced species then didn’t have much of an
impact on native environments but all too often as happens when humans
interfere with nature it went disastrously wrong stay tuned to number
one to find out which ones you might already have as a pet number ten Yellowstone wolfs now this is
a perfect example of how people’s actions and decisions can have a
continuous negative impact on local environments thanks to human involvement
the last northern Rocky Mountain wolves at Yellowstone Park were killed by the
government order in 1926 it wasn’t until decades later that scientists and
conservationists realized the mistake that their decision had on the
environment and begin the process of reintroducing them back into the area
however the Wolves impact sense reintroduction into the ecosystem has
created both positive and negative outcomes so what went wrong well some
people blame the type of wolf introduced however it should be noted that both the
northern Rocky Mountain wolf and the north western wolf which was introduced
are both a subspecies of the same species although the reintroduced animal
is slightly bigger reproduces in larger numbers and is more aggressive but
overall it’s unlikely that this is a massive contributor to the issues caused
by their reintroduction nevertheless they have caused numerous problems in
the area and that area has expanded as the pack grows to include Idaho Montana
and Colorado not to mention the Rocky Mountain area of Wyoming where they were
introduced not only your farmers losing livestock but the elk herds in the
surrounding regions have been decimated with a 40 to 50 percent decrease in herd
size due to the wolf’s feeding on them this is definitely an example of how
things can go disastrously wrong when humans try to introduce animals into new
environments number 9 Burmese pythons the Burmese python is a great example of
how bad things can get when you introduce a predatory animal into an
ecosystem that doesn’t have any natural predator native to Southeast Asia this
snake has been introduced to southern Florida where it has widely been kept as
a pet although it is now believed that there could be a few thousand of them
living in the wild the growing population of the wild Burmese pythons
has the potential to cause a logical disaster for native species as
they don’t have any predators in that region other than humans they’ve also
developed an appetite for local endangered species causing concern for
conservationists they’ve even been known to take on an alligator in order to try
to combat the sheer number of pythons inhabiting the waterways local
authorities have called on hunters to help keep the numbers down I hope I
never see one of these in the wild no thank you number eight the Nile perch
the Nile perch is a species of freshwater fish that is native to the
Congo Nile and Niger rivers as well as other bodies in the surrounding area as
one of the largest freshwater fish it can measure up to two meters in length
making it a massive catch it has been introduced to several other freshwater
lakes the most notable being Lake Victoria in East Africa where it is
considered a textbook example of the negative effects of humans introducing
animals to new environments in all it’s believed the Nile perch has contributed
to the near extinction of several hundred native species initially
introduced with planned economic benefits to the local fishing industry
some communities bordering the shores of the lake were not properly equipped to
deal with the changing ecosystem and they suffered a massive socio-economic
impact as a result this example shows how species introduced for commercial
purposes can have a devastating impact on the local environment and can even
negatively impact local communities as well at least there are plenty of fish
to eat that is if you can manage to catch one number seven domestic cat it
might surprise you to find domestic cats on this list but humans have introduced
them to numerous environments and they are actually on the list of the 100
worst invasive species in the world as a pet cats have brought lots of love and
joy to millions of people who keep them as pets but they’ve also had negative
impacts on the environment especially in the United States introduced by European
colonists the population of domesticated cats has increased dramatically across
the continent especially in urban areas and while the housecat isn’t
typically an issue keep in mind that there are over 100 million feral cats
that now live in the wild although the wild cats descendants of
runaway pets or abandoned animals caused a lot of problems it is both wild and
domesticated cats that prey on local wildlife just because a human feeds a
cat doesn’t mean it won’t hunt I mean cats are hunters after all so combined
they eat or kill a lot of native and non-native species but it’s not just
what they eat that causes problems just their presence can be problematic for
birds because let’s face it who would want to raise their young next to a
predators layer yet no matter how much of a problem cats cause it’s highly
unlikely their status is one of the most popular pets is going to change anytime
soon number six Siberian chipmunk the
Siberian chipmunk is native to places like northern Asia Central Russia China
Korea and northern Japan it was only recently introduced to Europe in the
1960s when it was a popular pet by the 1970s their population had increased
dramatically and they inhabited many suburban forests and urban parts in
countries across Europe unlike some introduced species the
Siberian chipmunk it brings some benefits like the dispersion of seeds
and fungi spores but they’ve also brought negative impacts with varying
severity they eat crops and annoy gardeners they compete with native
species for food and they even bring diseases such as Lyme disease that can
be dangerous to both humans and pets alike in all this species hasn’t caused
much of a widespread disaster as other examples on this list but these cute
little creatures have definitely raised environmental concerns but did you see
it though I think it want one now number five small Indian Mongoose native to
South and Southeast Asia the small Indian Mongoose doesn’t mind living in
close proximity to people and has been introduced to numerous places like
Hawaii the Bahamas Cuba Costa Rica Jamaica and Colombia you know the list
goes on and on this species was introduced to try to
combat agricultural issues for example in Hawaii and the Caribbean they were
introduced to kill the rats that infected cane sugar productions but
they’ve also had a continued impact on the local environments especially ground
nesting birds ironically the small Indian Mongoose didn’t have the desired
impact on the populations of black rats that the locals were hoping for instead
they have had a drastic impact on several local native populations of
birds reptiles and amphibians number four grey squirrels the grey squirrel
native to the eastern half of North America was introduced to Britain in the
1870s as a fashionable addition to Estate parks the main impact the grey
squirrel has is on the population of red squirrels which are in fact native to
countries across Eurasia in 2014 that were estimated to be approximately 2.5
million grey squirrels in comparison to only around a hundred to a hundred and
fifty thousand red squirrels so how have the grey squirrels been so successful in
decimating the native red squirrels well not only do they compete amongst one
another for territory and resources they also carry squirrel pox virus which
spreads quickly through the red squirrel populations it got so bad in the UK in
2017 the wildlife trust sought 500,000 new volunteers to monitor numbers record
locations educate children and even kill populations of grey squirrels all we can
hope is that they manage to find a sustainable solution otherwise the UK’s
red squirrel population will become a part of British history number three the
common rabbit native to southwestern Europe and northwest Africa the common
European rabbit has been introduced to numerous environments with only harmful
results for native vegetation and wildlife the first recorded evidence for
this species being introduced to a new ecosystem is from the Roman times when
they were introduced to the belly Eric and Great Britain in more recent times
they’ve been introduced to some places in the Hawaiian Islands islands off the
coast of southern Africa Australia and New Zealand in Australia they have
devastated the environment and they are considered one of the most significant
known factors in species loss it’s not just the environments that the impact
they also cost the Australian economy millions of dollars
likewise in Britain roughly 40 million rabbits cost the economy more than 360
million dollars a year in damages to crops businesses and infrastructure it’s
clear that the rabbit has caused some pretty bad problems for some of the
countries that’s been introduced to but they are also beloved pets and in the UK
alone there are at least 800,000 pet rabbits so it’s kind of a love-hate
relationship but in all they are definitely one of the most expensive
examples of humans introducing species to new environments number two
Africanized bees also known as the killer bee the Africanized honeybee is a
hybrid of Western honeybees which by itself was originally produced by
crossbreeding the African honeybee with different European honeybees the
unexpected result was a meaner more defensive species of bee that is much
more likely to attack something that they perceive as a threat it’s no
surprise then that they are widely feared by the public contrary to popular
belief the sting of the Africanized bee is not actually more potent than any
other honeybee it’s just that they are more dangerous because they are more
easily provoked and when they are provoked labouring friends lots and lots
of friends regardless of their impact on humans they are considered an invasive
species to the Americas where they have spread from Brazil to Mexico Texas
Florida Southern California and numerous other southern states where they are
causing various problems for people and the environment and let’s face it what’s
worse than killer bees number one cane toads
the cane toad is the world’s largest toad measuring between five and ten
centimeters in length native to South and mainland America this toad has a
massive appetite and that’s how it found its way on this list in the early 20th
century its species was introduced to Queensland Australia in the hope that it
would combat the rise in beetle numbers which were devastating the sugarcane
fields this led them to introducing the cane toad and thanks to the successful
introduction of the species in other parts of the world people thought it
would be a good idea to introduce them to Queensland initially they arranged
for about 100 toads to be flown to Australia and the rest as they say is
history now their population numbers well over 200 million and ecologists are
left scratching their heads on exactly how to get rid of them the problems they
cause range from the depletion of the native species that the toad snack on to
the poisoning of pets especially dogs who unfortunately like to lick toads and
eat them as a snack completely unaware of their poisonous backs there’s no way
to know for sure the exact long-term effects that cane toads will have on the
native populations in Australia but one thing scientists are confident about is
that there is no evidence to suggest that they actually affected the cane
meal populations that they were brought to fight in the first place so what do
you think about these invasive species any in particular you’re familiar with
let us know in the comments below and don’t forget to like this video and
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8 thoughts on “Most INVASIVE Animal Species Introduced By Humans!!!

  1. We have no need for introducing wolves. It is a stupid libtard idea, just like letting naturally caused fires burn.
    The number one invasive species in the USA is the feral hog. They do billions of dollars of damage annually.

  2. Farmers should just protect their livestock better. It's their own fault they're losing livestock.

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