(Update: because of the anti-Asian hate crimes during the COVID-19 pandemic, government agencies are changing "Asian carp" to "invasive carp." But those who are trying to convince Americans to eat the four invasive species consider any name with "carp" to be unacceptable. Illinois state and partner organizations are working on a new name. But they are still doing market tests. [Chicago Tribune, July 25, 2021, p25]
Nov 2024: I did a Google search but could not find a replacement name for Invasive Carp.)
In Mississippi River Since 1970sA demonstration electric shock barrier was built int 2002 at 1Volt/in, 5 hz, 4 ms. In August 2009, the upped Barrier IIA to 2 Volt/in, 15 hz, 6.6 ms.
East 20% of weight
Only one live Asian carp caught in the CAWS - below barrier.
Extensive fishing and poisoning Over last 3 months - no Asian carp
Nearest viable population is in the Dresden Pool - 41 miles from Lake
Can they establish in Lake Michigan?
Unknown
- 90% of invasions fail--feeding, spawning, temperatures
- Proven to be good at adapting
The Army Corps of Engineers installed a sign that describes the physical barrier between the Des Plaines River and the canal in Lemont. And they have another sign about the barrier in Romeoville.
And they installed a sign on the canal marking the south end of the electric barrier.
Update:
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| Screenshot form Combines Harvesters Threshers posting [They jump out of the water when a board disturbs them. They sometimes damage people in a boat] |
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| Screenshot form Combines Harvesters Threshers posting |
The video taught me that humans don't like them because it is hard to remove the bones. So why not use them for animal feed and/or fertilizer? Fishing them with nets would create jobs.
USFWS video
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| InvasiveSpediesInfo |
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| 19:01 video @ 1:20 Asian Carp Are Disappearing in U S Rivers — The Real Predator Was Unexpected |
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| Cindy bender posted Identifying the locations the "established "invasion" and "presence" fronts... The “invasion front” is the edge where the Asian carp population is dense enough to allow spawning and reproduction has been documented, but recruitment has not been documented. Anecdotal reports suggest spawning but failing to recruit young fish into the population is a common characteristic of Asian carp. Because of this, a third distinction can be made. The edge of the invasion where Asian carp reproduce and recruit regularly will be referred to as the “established front.” The most exterior extent of confirmed capture will be referred to as the “presence front.” At the presence front, densities are low and reproduction is believed to have not yet taken place or has not been documented. The presence front will have densities including only rare fish (one or two captured at a time). Generally, the population at this front is not considered established because densities are thought to be too low to support successful reproduction. Identifying the location and break between the established, invasion, and presence fronts is crucial information for implementation of management or control efforts. |
Jun 2026: This video talks about the Ohio River. Are these predatory fish also native to the Illinois River?
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| 18:20 video @ 13:48 |
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| Cinder Bender posted "The Kentucky Department of Fish and Wildlife Resources has raised the commercial fishing incentive." "Some commercial fishing crews have proven capable of removing more than 60,000 pounds of invasive carp per day from Kentucky waterways." The increase is from $.10 to $.15 per pound for the harvest of invasive carp from both Kentucky Lake and Lake Barkley, to keep pressure on invasive populations of silver carp, bighead carp, black carp and grass carp, which threaten native fish and aquatic habitats. “We have several lines of evidence suggesting our management strategy is reducing invasive carp populations in both lakes,” said Joshua Tompkins, coordinator for the Aquatic Invasive Species Program. “To keep that trend going, we’re adapting our efforts to maintain harvest at effective levels. Our success is due to the hard work of our commercial fishers and strong federal support.” In 2024, commercial fishers harvested more than 15 million pounds of invasive carp through Kentucky’s Invasive Carp Harvest Program, bringing the total to more than 74 million pounds since 2013. Recent data show signs of population decline: no young silver carp have been detected in either reservoir since 2015 and average catch rates have dropped sharply since 2019. Another indication of lower population numbers is that invasive carp are showing improved body condition, indicating less competition for food. The use of deterrent technology is also paying off. The BioAcoustic Fish Fence at Barkley Dam along the Cumberland River, which uses sound, light and bubbles to deter fish movement, has reduced upstream migration by about 50 percent. In addition, the department’s Experimental Commercial Fishing Methods Program is testing new gear and techniques that allow large-scale removal of invasive carp while minimizing impacts on native species. Some commercial fishing crews have proven capable of removing more than 60,000 pounds of invasive carp per day from Kentucky waterways. “Increasing the incentive to commercial fishers will help ensure we keep suppressing invasive carp numbers,” said Dave Dreves, director of the Fisheries Division for Kentucky Fish and Wildlife. “It’s a big win for anglers and boaters that recreate on Kentucky and Barkley lakes, as well as for the vital $940-million tourism economy of the Western Waterlands Region.” For more information about invasive carp eradication efforts visit the Invasive Carp Information webpage on Kentucky Fish and Wildlife’s website (fw.ky.gov) or call 1-800-858-1549, 8 a.m. – 4:30 p.m. (ET) weekdays, excluding holidays. Eddie Nighbert: It should also be noted that recent data shows that these fish do not have the longevity of life that was previously thought. Instead of 10 to 12 years, it is now believed their lifespan is 5 to 7 years. |
They have the wrong location for the carp barrier. The current barrier is near Romeoville. The video claims the barrier is at Brandon Road. That is where they plan to build a better barrier costing more than $1b. The photo at 5:34 has the Romeo Road Bridge in it. Skip to 7:20 if you don't want to hear yet again that carp are a problem. They talk about the Blue Catfish and Alligator Gar eating the adult carp. And the smaller native fish are eating the juvenile carp (biotic resistance). Man had eradicated the Blue Catfish and Alligator Gar as "trash fish."
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| 21:26 video @ 4:07 The US Spent $607 Million Fighting Asian Carp — Three Native Fish Did It For Free |
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| @ 18:14 |
It seems like you figured out how to resize your pictures. Looks much better.
ReplyDeleteThanks for the comment so that I can figure out how to do comments. Actually, I learned how to crop the pictures. I figured out that the camera takes a picture that is about 3 times larger than an X-Large picture.
Delete