by Jacob Harris
Imagine
boating along your favorite water way on a sunny afternoon when out of the
corner of your eye you see a shining glimmer before,” SMACK” you’ve just been
hit by a 20 pound Asian carp. What is an Asian carp you’re wondering? Asian
carp are a particular type of carp that was imported into catfish ponds to keep
algae from getting out of control. These hungry aggressive fish then got into
the water system in a large flood. Not knowing which way they were going
researchers studied their habits and a gut wrenching truth was unveiled. They
were heading north to the great lakes destroying natural vegetation and out
competing native species for food and home. Measures have been taken to slow
and stop the spread of this invasive fish. Shocking stations have been
implemented between Chicago and Lake Michigan. Shock stations administer an
electric pulse into the water killing everything in the radius. Shocking is a
system of stream sampling but in this case can be utilized to keep carp from
infiltrating the great lakes. The main concern with these fish entering the
great lakes water shed is that these fish will destroy the tributaries. Asian
carp out compete leaving no resources left for native fish. The destruction of
the great lakes tributary would be the end of a billion dollar fishing
industry. With enforcement the tributary has been saved for now. Dan Egan from
the Journal Setinal published an
article on the findings conducted by the DNR. The Wisconsin DNR set out to take
275 samples from Lake Michigan and sent those tests to Notre Dame. Notre Dame
created a test that would test for signs left and created by these carp. The
test is based off a tell tale DNA keytone that is unique to this exotic fish
entering the waterway. The test conducted in mid to late august 2012 came back
negative for all 275 samples .Though some fish have been found above the shock
station it is believed that they are stray or outliers. It is currently not
believed that these stray fish will populate or that a population exists in the
great lakes tributary. However, had this invasive species actually made it into
the tributaries of the great lakes there is much debate as to what would happen?
There are a few strategies to control these carp had they entered the great
lakes. My personal favorite management strategy would be to net and capture
these fish like is currently being done to harvest fish in the tributary; Once
captured we could ice and ship them back to Asia where these fish are
considered to be a delicacy. The second management option which is currently
utilized on rivers invaded by the fish is bow fishing. Allowing bow fish
hunters’ limitless bag limits would bring popularity to the sport fishing
style.
These invasive species are monsters
that destroy natural vegetation and native species in our lake river systems.
They reproduce quickly and grow even quicker. Though management plans are in
place these fish may break loose at any time and need to keep being monitored
to keep our great lakes fisheries safe.
1 comment:
I agree with you Nick, these fish are definitely posing a threat to the great lakes as well as boaters. You opened with a statement about getting hit by a carp while boating and I would just like to add that I have heard true stories of people getting seriously injured from these fish so there's another reason they need to go.
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