Status of Asian Carp in the Valley Dennis S. Baxter April 22, 2020 - - PowerPoint PPT Presentation

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Status of Asian Carp in the Valley Dennis S. Baxter April 22, 2020 - - PowerPoint PPT Presentation

May 21, 2023 194 likes •653 views

Status of Asian Carp in the Valley Dennis S. Baxter April 22, 2020 Asian Carp in the Valley Non-native and invasive in North America There are four Asian carp species in the Tennessee River Watershed: Silver Bighead Grass Black Status

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Status of Asian Carp in the Valley

Dennis S. Baxter April 22, 2020

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Asian Carp in the Valley

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There are four Asian carp species in the Tennessee River Watershed: Silver Bighead Grass Black

Non-native and invasive in North America

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How Did Asian Carp Get to America?

  • Aquaculture Farmers Imported Asian Carp to control Algal

Blooms and Vegetation in Culture Ponds in the 1970’s

  • Floods in the1980 & 1990’s Compromised the Ponds and

Allowed the Fish to Escape into Streams and Rivers

  • Once in the Mississippi River, the Fish Spread Rapidly
  • Asian Carp were Found in the Ohio River in the 1990’s

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Asian Carp Distribution in Tennessee

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Silver Carp Reported

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Asian Carp Distribution & eDNA

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Mistaken Identity

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Gizzard Shad, Silver Carp, Blueback Herring and Alewife Comparisons

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MICRA (Mississippi Interstate Cooperative Resource Association)

  • MICRA functions as an umbrella organization
  • Organizes multi-state partnerships
  • Address inter-jurisdictional fishery management

issues

  • Within six Mississippi River sub-basins
  • MICRA is a partnership of

> 28 state agencies with fisheries management jurisdiction > 4 Federal Partners in the Mississippi River Basin > TVA participates in the Tennessee/Cumberland sub-basin

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MICRA Objectives

  • Conduct Targeted

Sampling Surveillance

  • Early Detection
  • Population

Characteristics

  • Evaluate Lock & Dam

Passage

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National Strategies for Asian Carp

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  • Contain and control the expansion of populations of

Bighead, Black, grass, and Silver carps in the United States

  • Extirpate, or reduce to levels of insignificant effect
  • Conduct research to provide accurate and scientifically

valid information necessary for the effective management and control

  • Effectively plan, implement, and evaluate management

and control efforts

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Who is Responsible?

The states (KY, MS, AL, TN) fisheries management The USFWS obtains funding then facilitates program The USACE operates locks The TVA manages water/operates dams Tennessee River

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Can These Fish Be Stopped?

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First Actions

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  • Since both Silver and Bighead

carp form tight schools, individuals will be tagged so the schools of Asian carp can be

  • tracked. This is called the

“Judas fish technique.”

  • The fish can be affectively netted

to ensure re-capture and removal

  • f other invasive carp found in the

school.

  • Commercial fishermen will be

able to remove fish in the school at the state’s request.

Understanding Population Dynamics

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First Actions (cont.)

  • Collaboration of Sub-basin agencies and universities
  • Surveying relative densities
  • Implanting acoustic transmitters and receivers
  • Monitor movements through locks and dams
  • Provide information for lock management and deterrent barriers
  • Determine if natural recruitment is occurring in the reservoirs

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Fill Knowledge Gaps

  • Understand distributions and habitat use in the Ohio River sub-

basin

  • Determine the extent of:
  • Spawning occurring within the systems,
  • Movement within the systems, and will provide
  • Life history and population dynamics data for informing

Tennessee River specific-models

  • Estimating control needs and invasion impacts

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Will Asian Carp Affect the Fisheries?

  • Unknown at this Time
  • Long Term Monitoring Programs & Historical

Fisheries Data will help Determine Changes in Fish Populations

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Silver Carp Monitoring

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Silver Carp Adult Silver Carp Larvae

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Reservoir Ecological Health Locations

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Ecological Health Score Calculation Utilizing Five Key Indicators

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Strategies to Stop Upstream Migration

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  • Communication
  • Barriers
  • Commercial Fishing
  • Contract Fishing
  • Bow Fishing Tournaments
  • Large Scale Netting at Pinch

Points

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Communication

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Websites TV Interviews Tennessee Uncharted Public Meetings Sportsman Events

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Barriers

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  • Electric and Acoustic
  • Positioned at the downstream

lock entrances

  • Current research will determine

if barriers are successful

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  • Sound Barrier-Installed by the USGS
  • Installed this year
  • Test to Verify if barrier works by tagging

and tracking movement

  • Successful spawning has only occurred once in 2015 and not

has been seen in KY or Barkley Reservoirs since

  • 100% effectiveness is not necessarily needed to reduce

population

  • Recruitment reduction to upstream waters

will keep populations from exploding

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Acoustic Barrier System at Barkley Lock

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Commercial Fishing

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Bow Fishing for Asian Carp

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Asian Carp Roundup

  • Removal at Pinch Points
  • Multi-Agency Event
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Cooperative Tagging and Removal

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Uses for Asian Carp

  • Table Fare
  • Bait
  • Animal Feed
  • Compost
  • Recreation?
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Asian Carp are Great Table fare!

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Asian Carp are in Demand at Restaurants

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Kentucky Fish Center, LLC

  • Opened the Kentucky Fish House
  • Public-Private Partnership to harvest and sell Asian Carp
  • Harvest goal by 2024 is 20-million-pound

production goal

  • Teaches Commercial Fishers – Use nets and how

to fish for Asian Carp

  • Ice Machine

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  • Lowering numbers of silver carp moving upstream

by using them for bait

  • Harvest, freeze it, cut it into pieces
  • Sell it as a cheap bait to East Coast lobster fishermen
  • Lobster Fisherman want live bait and are willing to pay

50 cents per pound

> 50,000 lbs. needed

Turning an invasive problem into a bait solution

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Lacey Act

  • It’s legal to transport invasive species across

state lines

  • if the fish are dead and eviscerated
  • Significant regulations must be amended to

make this work

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Silver Carp on Ohio River

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Health and Safety Issues

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Flying Carp are a Hazard to Boaters

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State of the Valley

  • All State and Federal Agencies are working

together through MICRA

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State of the Valley

  • We Established the Leading Edge of Invasion
  • Deployed Receivers & Tagged Fish
  • Identified Pinch Points

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State of the Valley

  • We are Testing an Acoustic Barrier

at Barkley Lock & Dam

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State of the Valley

  • KY Developed Fish House & Purchased Ice

Machine

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State of the Valley

  • Contract Commercial Fishing Programs are

sponsored by the States

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