jon anderson current status of coastal cutthroat trout in ... · of coastal cutthroat trout in...
TRANSCRIPT
![Page 1: Jon Anderson Current Status of Coastal Cutthroat Trout in ... · of Coastal Cutthroat Trout in Washington State ... from coho gillnet harvest by-catch, October 2004 Photo courtesy](https://reader033.vdocuments.net/reader033/viewer/2022041608/5e35bd5b4fd846483e7efa78/html5/thumbnails/1.jpg)
Status and Managementof Coastal Cutthroat Trout
in Washington StateJon. Anderson
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Cutthroat Life History
• Resident• Potamodromous• Fluvial• Adfluvial• Amphidromous• Anadromous
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Factors Affecting Stock Status:
Habitat
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Factors Affecting Stock Status:
Species Interactions
Photo: Mid Vanc. Is. Habitat Enhancement Soc
Photo: Mid Vanc. Is. Habitat Enhancement Soc
Photo: Mid Vanc. Is. Habitat Enhancement Soc
Photo: Mid Vanc. Is. Habitat Enhancement Soc
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Factors Affecting Stock Status:
Harvest And
Hatchery
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Coastal Cutthroat Populations -NOAA Status Review 1999
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Coastal Cutthroat SaSI- - Salmonid Stock Inventory- - June 2000 - - Ann Blakley, Bob Leland, Jim Ames- - Identified 40 “Stock Complexes”
• - - One is “Healthy”• - - Seven are “Depressed”• - - None are “Critical”• - - Thirty-Two are “Unknown”
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Photo Courtesy BC Fly Fisher Guides
Stock Complexes and Stock Status
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• Puget SoundCutthroat “ESU”
Photo courtesy Nate Mantua
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Puget Sound SaSI Stock Status
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Big Beef Creek Smolt ProductionBig Beef Creek Cutthroat
0500
1,0001,5002,000
1978
1981
1984
1987
1990
1993
1996
1999
2002
Year
Estim
ated
Sm
olt
Prod
uctio
n
Data: Dave Seiler WDFW
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• Olympic PeninsulaCutthroat “ESU”
Photo Courtesy Nate Mantua
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Coastal Washington SaSI Stock Status
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West Fork Hoquiam RiverGrays Harbor
West Fork Hoquiam Trap
0
50
100
150
1985
1987
1989
1991
1993
1995
1997
1999
Year
Num
ber A
dults
Data: Quinault Indian Nation DNR
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Bingham Creek Smolt Production East Fork Satsop River
Bingham Creek Cutthroat
050
100150200250
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Year
Estim
ated
Sm
olt
Prod
uctio
n
Data: Dave Seiler, WDFW
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• SW Washington/Columbia River
Cutthroat “ESU”
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Columbia River SaSI Stock Status
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Juvenile Cutthroat at Cowlitz Falls Fish Facility
Cowlitz Falls Fish Facility
0500
1000150020002500
1997 1998 1999 2000 2001 2002 2003 2004 2005
Year
Estim
ated
Sm
olt
Prod
uctio
n
Data: Serl and Morrill 2004
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Adult Cutthroat at Toutle River Trap
Toutle Collection Facility
0
50
100
150
200
89\90
91\92
93\94
95\96
97\98
99\00
01\02
03\04
Year
Cut
thro
at A
dult
Num
bers
Data: Bryce Glaser, WDFW
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Adult Cutthroat at Kalama River Trap
Kalama River Adult Trap
0102030405060
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Year
Num
ber A
dult
Cut
thro
at
Data: Hulett & Wagemann, WDFW
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Juvenile Cutthroat at Kalama River TrapKalama River Juvenile Traps
0
5000
10000
15000
2000019
80
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
Year
Estim
ated
Juv
enile
C
utth
roat
Data: Hulett & Wagemann, WDFW
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Cedar CreekLewis River
Cedar Creek Wild CutthroatGrist Mill Ladder
050
100150200250
98-99 99-00 00-01 01-02 02-03 03-04
Year
Adu
lt C
utth
roat
Data: Bryce Glaser, WDFW
Cedar Creek Smolt Data
010002000300040005000
2001 2002 2003 2004
Year
Estim
ated
No.
Sm
olts
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B. Baker, WDFW 2000 Allozyme Analysis
Cutthroat Genetics
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Suggest:
SW Washington Coast and Columbia River cutthroat may be in separate population segments
Mid-Columbia very distinct from lower Columbia pops. USGS Map
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Harvest Management• WDFW Strategy Designed to:• Allow Female Trout to Spawn at least Once
Prior to Becoming Available for Retention
Photo courtesy BC Fly Fisher Guides
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Statewide Trout Regulations• In Non-Anadromous Streams:• 2 Fish – Minimum 8 Inches in Length
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Statewide Trout Regulations• In Anadromous Streams:• 2 Fish – Minimum 14 Inches in Length
Photo courtesy BC Fly Fisher Guides
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Regulations – Cowlitz Hatchery Cutthroat
• Up to 5 Fish – Minimum 12 Inches in Length• Selective Fishery – Wild Cutthroat Release
Photo courtesy BC Fly Fisher Guides
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Statewide Trout Regulations• In Marine Waters:• No Retention of Cutthroat Trout
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Cowlitz Trout Hatchery
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Mitigation for Loss of Habitat and Salmonid Production
Mayfield and Mossyrock Dams on the Cowlitz River
Mitigation or Dams
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Release Goal: 160,000 Smolts
Return Goal: 5,000 Adults4 Fish / Pound
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What’s in the Future?• Maintain Healthy
Cutthroat Populations
Photo courtesy Olga Water Users Inc.
Photo courtesy Olga Water Users Inc.Photo courtesy Olga Water Users Inc.
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What’s in the Future?• Maintain the
Recreational Fishery• On Healthy
Populations
Photo Courtesy BC Fly Fisher Guides
Photo Courtesy Emerald Water Anglers, LLC
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What’s in the Future?• Necessary to
Determine Status• Need Basic Life-
History Information• Need Understanding
of Hybridization, other Species Interactions
CTT
CTT
RBT
52cm FKL; 4 yr. old, spawned twice
Cutthroat and rainbow trout in Lake Washington from coho gillnet harvest by-catch, October 2004
Photo courtesy Hal Michael
Photo courtesy Hal Michael
Photo courtesy Anne Marshall WDFW
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The End
Photo courtesy Marty Chaney, USDA NRCS
With Thanks to all the RealBiologists at WDFW who provided data for this paper