The problem is, after exhausting the
readily available hydrilla supply, the carp
kept eating. The hungry fish also ate 80
percent of the beneficial native water vegeta-
tion. Now the lake’s managers are faced with
finding the balance between the number of
white Amur, and the amount of hydrilla,
which sprouts annually. In the 1970s, the
ratio of fish stocked to acres of hydrilla was
about 30 to 1. In the last stocking effort, it
was about 50 to 1. This past summer, the
Texas Parks and Wildlife Department held
a grass carp-removal fishing tournament
to target the otherwise protected species.
With an estimated 32,000 or so white Amur
remaining, the goal is to balance the number
of carp with the several hundred acres of
hydrilla that emerge each year.
DOING OUR PART
While biological controls hold promise, it’s
much more effective to prevent the spread of
invasive species in the first place. Stopping
the spread of zebra mussels, hydrilla, or
water hyacinth isn’t just good boating prac-
Don’t be a carpet dragger! If
you’re only in the water for a
day, inspect and clean any plants
from your trailer. If you’ve been
in the water longer and marine
growth starts on your bottom,
you’ll need to take further action
to make sure you don’t transfer
invasive species from one body
of water to another.
tice, it’s becoming mandatory across the
country. Regardless of how they got here,
they’re our problem now. Recreational boaters stand to lose out no matter where we
live, if these species go unchecked.
For boaters, invasive plants such as
hydrilla, water hyacinth, and milfoil can
blanket the surface of our waterways, forming an impenetrable, prop-snarling mess.
When Asian carp leap from the water like
popcorn from a hot skillet, it’s fishermen,
boaters, and waterskiers who are endangered. Mussels can clog water intakes and
cooling passages, wrecking inboard engines.
By law we’re required to do what we can to
stop these critters in their tracks and this,
for boaters, has to happen at the boat ramps
across the country.
PHOTO: LADD JOHNSON, NOAA/GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY
ed Why boaters ne an ethanol fuel treatment:
Why boaters want
ethanol fuel treatment:
Newest & m
Boat US Members: DOUBLE YOUR REBATE!
Buy any size PhaseGuard4® and get $6 back
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©2012 CRC Industries, Inc.
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