Columbia River Redband Trout Oncorhynchus mykiss gairdneri Randall Osborne District 2 Fisheries Biologist Washington Department of Fish and Wildlife March.

Columbia River Redband Trout Oncorhynchus mykiss gairdneri

Randall OsborneDistrict 2 Fisheries Biologist

Washington Department of Fish and Wildlife

March 2013

Major Divisions of Rainbow Trout

• Redband

• Interior Columbia River

• Northern Great Basin and Klamath Basin

• Sacramento River Basin (California Golden Trout, Kern and Little Kern Golden Trout, Sacramento Redband Trout)

• Coastal• North America (Alaska to California)• Asia (Kamchatkan Peninsula)


• Redband





http://www.google.com/url?sa=i&rct=j&q=klamath+lake+redband&source=images&cd=&cad=rja&docid=y-ruIdj-qh5WKM&tbnid=9GKy8AIpFuFTWM:&ved=0CAUQjRw&url=http://www.flyfishusa.com/newsletter/041110/&ei=67NAUbH3IYrOqAGHsoCwDA&psig=AFQjCNHoXxO-3IKcG3jAQJviPEX3H1vZnw&ust=1363218696599632


• Redband



• Sacramento River Basin (California Golden Trout, Little Kern Golden Trout, Sacramento Redband Trout)



• Redband


• Northern Great Basin(Upper Klamath Lake and Desert Basins)



Historical Distribution of Redband Trout

• Redband• Interior Columbia River • Northern Great Basin

• Sacramento River Basin

• Coastal• West of Cascade Range

Redbands

Co

asta

l

http://www.google.com/url?sa=i&rct=j&q=sheep+creek+washington&source=images&cd=&cad=rja&docid=PLvwWPuIfp1I9M&tbnid=fHkRs62y7K0t1M:&ved=0CAUQjRw&url=http://northport-washington.olx.com/little-sheep-creek-iid-231600346&ei=vlFFUembAcjyqwGExYD4Ag&psig=AFQjCNFeYEWNmDnd1Yv1QZZ2D6adJXSs1Q&ust=1363583612284928

Redband Trout Biology

• Habitat• High mountain forests to desert streams to

lakes and reservoirs

http://www.google.com/url?sa=i&rct=j&q=crab+creek+washington&source=images&cd=&cad=rja&docid=ixVQ8FbpruIi7M&tbnid=7R02mXuQ56lGvM:&ved=0CAUQjRw&url=http://www.flickr.com/photos/locked4low/2532030530/&ei=bkpFUfvgF8S0rQHP3oHADw&bvm=bv.43828540,d.aWM&psig=AFQjCNHFlRefpooY07AwbVADDlptvnbXyg&ust=1363581666846715


• Habitat• Cover

• Mix of Substrate Types

http://www.google.com/url?sa=i&rct=j&q=sheep+creek+washington&source=images&cd=&cad=rja&docid=PLvwWPuIfp1I9M&tbnid=fHkRs62y7K0t1M:&ved=0CAUQjRw&url=http://northport-washington.olx.com/little-sheep-creek-iid-231600346&ei=vlFFUembAcjyqwGExYD4Ag&psig=AFQjCNFeYEWNmDnd1Yv1QZZ2D6adJXSs1Q&ust=1363583612284928

http://www.google.com/url?sa=i&rct=j&q=pocket+water&source=images&cd=&cad=rja&docid=ifbDyigWJqZFjM&tbnid=IO0ptRvBaHt74M:&ved=0CAUQjRw&url=http://www.tenkaraonthefly.net/2011_08_14_archive.html&ei=W1JFUbzHGNDiqAHogYHYCA&psig=AFQjCNH2sefNBfGXyply4gDXAs7WmBMGIw&ust=1363583895095310


• Habitat• Pools and Pocket Water

http://www.google.com/url?sa=i&rct=j&q=trout+behind+boulder&source=images&cd=&cad=rja&docid=O8dIQMk6Lj-VgM&tbnid=2zFhcZ4y4zzGTM:&ved=0CAUQjRw&url=http://www.southerncouncilfff.org/communications/archives.php&ei=OlRFUb_eJ8aUrgG9xICwDA&psig=AFQjCNHCaw2ZBek2IDOHX546VOS4QrozXw&ust=1363584407945523

http://www.google.com/url?sa=i&rct=j&q=big+boulders+in+a+river&source=images&cd=&cad=rja&docid=q6V4FGsqq3YS7M&tbnid=xBK3nHo7tZS9IM:&ved=0CAUQjRw&url=http%3A%2F%2Fpackrafting.blogspot.com%2F2009_06_01_archive.html&ei=9O9IUcDsLYKhigL3xYGoBg&psig=AFQjCNHQ_7W-5I-Sq_fs6ThOy_ru82vmeQ&ust=1363820882152860


• Habitat• Spawning March-June

• Loose Gravels

http://www.google.com/url?sa=i&rct=j&q=trout+spawning+redd&source=images&cd=&cad=rja&docid=2PYJArjN3ka2fM&tbnid=eU5s8StGcV1OpM:&ved=0CAUQjRw&url=http://www.onlinefishinglog.com/blog/23/Spawning-Trout-and-Redds&ei=CFVFUemrCoHoqAGRsICwDw&psig=AFQjCNE_UxLMcxHCQnxjyDExMtMwC4lQPA&ust=1363584612661450

http://www.google.com/url?sa=i&rct=j&q=trout+redds&source=images&cd=&cad=rja&docid=I2IxQpu6YqDqOM&tbnid=n3UvFxU1Ic2FmM:&ved=0CAUQjRw&url=http%3A%2F%2Flornce.wordpress.com%2F2010%2F10%2F08%2Ftime-to-watch-out-for-those-redds%2F&ei=dPFIUdzhAqeViQL_xYCoBQ&psig=AFQjCNHSV2CXoz5mtiKcLfgss-odBgst_A&ust=1363821084114393

http://www.google.com/url?sa=i&rct=j&q=trout+redds&source=images&cd=&cad=rja&docid=2PYJArjN3ka2fM&tbnid=V6frC47cijW5RM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.onlinefishinglog.com%2Fblog%2F23%2FSpawning-Trout-and-Redds&ei=r_FIUYOoBaXCigKChYHICQ&psig=AFQjCNHSV2CXoz5mtiKcLfgss-odBgst_A&ust=1363821084114393


• Habitat• Undercut banks

• Riparian cover

http://www.google.com/url?sa=i&rct=j&q=undercut+banks+in+a+stream&source=images&cd=&cad=rja&docid=0XPKdQkRCqIZtM&tbnid=03g9xhWmT7y1pM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.circlevalleyanglers.com%2Fblog%2F%3Fp%3D53&ei=bvJIUfvoNuHIiwKm2oDoCw&psig=AFQjCNE9wn9kILkUvamUzgC3MSHE5EE_lA&ust=1363821523783303

http://www.google.com/url?sa=i&rct=j&q=undercut+banks+in+a+stream&source=images&cd=&cad=rja&docid=ua97hi10Edr_hM&tbnid=X_2O4v9UT8BgiM:&ved=0CAUQjRw&url=http%3A%2F%2Fwyoflyfish.blogspot.com%2F&ei=4fJIUdygFOeUiQKLp4GwCA&psig=AFQjCNE9wn9kILkUvamUzgC3MSHE5EE_lA&ust=1363821523783303


• Habitat• Large woody debris

http://www.google.com/url?sa=i&rct=j&q=large+woody+debris+in+streams&source=images&cd=&cad=rja&docid=s4IQWA7ep1QLUM&tbnid=cZbqsVLJnZlVdM:&ved=0CAUQjRw&url=http%3A%2F%2Ffishwild.vt.edu%2Fafs%2FAFS_education_fisheries_techniques_visuals_chap_4_add.htm&ei=zkFKUc7ELJGYqAGA64DYBg&bvm=bv.44158598,d.aWM&psig=AFQjCNHMvXOBnh5IWNgIdwj3x9PMfON4jQ&ust=1363907376845944

Redband Trout Life History

• Resident− Entire life in natal tributary stream

http://www.google.com/url?sa=i&rct=j&q=stream+resident+redband+trout&source=images&cd=&cad=rja&docid=joN-j9tdKt0AjM&tbnid=RZvqTSDZ-Ap2BM:&ved=0CAUQjRw&url=http://www.nativetroutflyfishing.com/columbiabasinredband.htm&ei=xMJAUYDdDcnFqQGkw4CgCw&psig=AFQjCNFeCjYHQTzRRX0dTjhrBUjYGiGfMA&ust=1363285033662686


• Fluvial− Juveniles rear in

tributary, migrate to larger river and reside as adult, return to natal tributary to spawn

Photo courtesy of Jack Mitchell, The Evening Hatch Guide Service.


• Adfluvial− Juveniles rear in tributary, migrate

to lake to reside as adult, return to natal tributary to spawn

Redband Trout Life History• Anadromous

− Juveniles rear in tributary, migrate to ocean as juveniles and reside until adulthood, then migrate

back to natal stream to spawn

Limiting Factors

• Habitat degradation and loss− Siltation from poor land-use practices− Development

“the character of this stream (Little Spokane River) is being materially changed with the advent of civilization”(Gilbert and Evermann 1895)

http://www.google.com/url?sa=i&rct=j&q=subdivisions+on+spokane+river&source=images&cd=&cad=rja&docid=eROIYjWQj4hKaM&tbnid=-CnB8I1gbWLY2M:&ved=0CAUQjRw&url=http://www.northidahochad.com/index.php?option=com_iproperty&view=allproperties&Itemid=513&ipquicksearch=1&city=Post+Falls&ei=f_BAUZ3yD4imqgGur4HwDQ&psig=AFQjCNGbI1VeHUMahXJps6-SyajkBLWYQQ&ust=1363296737646203

http://www.google.com/url?sa=i&rct=j&q=hangman+creek&source=images&cd=&cad=rja&docid=KsShOap7OJMYFM&tbnid=ng-ZFU8KKlVjRM:&ved=0CAUQjRw&url=http://www.spokanecounty.org/WQMP/projects/ASP/BasinTour12.asp&ei=xvBAUdWXIoKNqQGylYGwCw&psig=AFQjCNGAZDQtUDfrwxHC8XdM1XrHlMa_sw&ust=1363296818428635

http://www.google.com/url?sa=i&rct=j&q=cattle+in+streams&source=images&cd=&cad=rja&docid=VhYqVi8MWYsLxM&tbnid=ZMoMeWKc4njpVM:&ved=0CAUQjRw&url=http://www.buffer.forestry.iastate.edu/Research/Grazing/HTML/erosion.htm&ei=D_JAUZWfLJLkqAG25IHIBg&psig=AFQjCNHP8lczh760QamcISVyoWECsH2CJA&ust=1363297051503108

Limiting Factors

• Passage Barriers− Culverts

− Dams

http://www.google.com/url?sa=i&rct=j&q=long+lake+dam&source=images&cd=&cad=rja&docid=QMgz11L8j7GvUM&tbnid=eAETfPe7vu4jKM:&ved=0CAUQjRw&url=http://advrider.com/forums/showthread.php?t=207064&page=8&ei=-m46UfDpKsjYywHd0IGwCQ&bvm=bv.43287494,d.aWc&psig=AFQjCNF9xdF7N5o6EUZbNbcdkChSGMr_gQ&ust=1362870310636012

Limiting Factors

• Pollution− Domestic− Recreation− Industrial− Mining

https://fortress.wa.gov/ecy/gsp/SitePageImageHandler.ashx?id=802

Limiting Factors

• Flow and Temperature Changes

http://www.picable.com/Places/Prison/Spokane-River-Flooded.424983

Limiting Factors• Hybridization

• Natural• Hatchery

“Pure populations of gairdneri, uncontaminated by hatchery rainbow trout, are now relatively rare.”

(Behnke 2002)

Limiting Factors

• Predation

• Competition

Limiting Factors

• Harvest

Questions?

Columbia River Redband Trout Oncorhynchus mykiss gairdneri Randall Osborne District 2 Fisheries Biologist Washington Department of Fish and Wildlife March.

Documents

little kern golden trout

spawn slide

hatchery rainbow trout

natal tributary stream

pocket water slide

temperature changes

larger river

stream little spokane