A genetic analysis of the Summer Steelhead stock composition in the 2011 and 2012 Columbia River sport and treaty fisheries
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1 A genetic analysis of the Summer Steelhead stock composition in the 2011 and 2012 Columbia River sport and treaty fisheries Alan Byrne Idaho Department of Fish and Game Boise, Idaho
2 Contributors and Cooperators Joe Hymer, Washington Department of Fish and Wildlife Ken Keller, Washington Department of Fish and Wildlife Stuart Ellis, Columbia River Inter-Tribal Fish Commission Roger Dick II, Yakama Nation Megan Begay, Yakama Nation Rod French, Oregon Department of Fish and Wildlife Jon Hess, Columbia River Inter-Tribal Fish Commission Craig Steele, PSMFC & IDFG Rod French, Oregon Department of Fish and Wildlife Eagle Genetics Lab, Idaho Department of Fish and Game Hagerman Genetics Lab, Columbia River Inter-Tribal Fish Commission And most importantly all the technicians that collected and analyzed the samples
3 You are here!
4 Sport fisheries sampled Lower Columbia River Downstream of Bonneville Dam Adipose clipped retention only Most Steelhead harvested in July and August Anglers switch to Fall Chinook once they arrive Steelhead retention not allowed in Commercial fisheries Harvest estimated monthly from creel surveys Columbia River Zone and 2013 Bonneville Dam to McNary Dam Adipose clipped retention only Most effort in localized areas: mouth of the Deschutes River, Wind River, Drano Lake, John Day Arm Opportunistic sampling. Harvest from catch cards.
5 Tribal fisheries sampled Columbia River Zone Bonneville Dam to McNary Dam Clipped and unclipped fish are harvested Platform, hoop net, hook and line, gill net, drift net Commercial fishing targets fall Chinook and Coho but significant numbers of Steelhead are caught Commercial retention and sale of Steelhead is allowed Most of the Steelhead harvest occurs during the commercial season targeting fall Chinook (late August early October) Fish are kept for personal use, over-the-bank sales, and commercial sales Sampled by WDFW in 2011 at commercial buyers Sampled by Yakama Nation in 2012 and 2013 Harvest estimated for clipped and unclipped large and small Steelhead
6 Study objectives Harvest contribution of Snake River hatchery stocks in Columbia River fisheries Estimate harvest contribution by hatchery release group and brood year in Columbia River fisheries Estimate the Snake River hatchery origin contribution in the unclipped harvest in the tribal Zone 6 fishery Estimate the contribution by GSI reporting group in the unclipped harvest in the tribal Zone 6 fishery
7 Analysis of clipped fish Calculate a multinomial proportion of the sampled fish Snake River broodstock have been genotyped since BY2008 Run PBT panel and assign fish to stock, release group, and brood year Expand actual release group count by its tag rate (E ib = A ib / r ib ) this is the expected number of samples that would assign to each group if tag rate = 1. Most stocks are > 0.9 Sum the expanded count of all groups assigning to the Snake River and then subtract the sample size (N) from this sum to get Other group (non-snake River stocks) Calculate proportions for each group (E ib / N) Bootstrap to calculate Confidence Intervals for proportions Harvest contribution = total harvest * (E ib / N)
8 PBT tag rates of Snake River Steelhead Tag Rate Hatchery Stock (11) Release group (19) BY2008 BY2009 BY2010 Dworshak Dworshak EF Salmon EF_Sawtooth Imnaha Imnaha Lyons Ferry Lyons Ferry NS Oxbow Oxbow Pahsimeroi - general production Pahsimeroi Pahsimeroi - SBT Indian Creek egg box SBT_Indian na Pahsimeroi - SBT Panther Creek egg box SBT_Panther na Pahsimeroi - SBT programs (all releases) SBT_Pah na Sawtooth - general production Sawtooth Sawtooth - SBT Basin Creek egg box SBT_Basin na Sawtooth - SBT Smolt release at Sawtooth SBT_Sawtooth na na Sawtooth - SBT Yankee Fork egg box SBT_YF_Egg na na Sawtooth - SBT Yankee Fork smolt release SBT_Yankee Touchet endemic LF_Touchet NS Tucannon endemic LF_Tucannon NS Upper Salmon Upper Salmon Wallowa- Cottonwood release LF_Cottonwood Wallowa- all other releases Wallowa NS NS = not sampled na = no release of this group in BY
9 Actual PBT assignments and Expanded counts in 2012 LCR Sport 542 of 828 samples assigned to Snake River hatchery stocks with PBT Actual Count of PBT assignment (A ib ) Expanded Count (E ib ) Release group (i) BY2008 BY2009 BY2010 Total BY2008 BY2009 BY2010 Total Dworshak EF_Sawtooth LF_Cottonwood LF_Touchet NS Imhana Lyons Ferry NS Oxbow Pahsimeroi Sawtooth SBT_Basin SBT_Yankee Wallowa NS Snake R total: Other na na na Total:
10 Lower Columbia River 2012 Sport harvest by month Total harvest = 15,923 12,000 10,000 8,000 6,000 4,000 2,000 0 July August Sept Oct
11 Lower Columbia sport 2012 by Release group and age Snake River stocks only, harvest = 10,964 3,000 2,500 2,000 1 ocean 2 ocean 3 ocean 1,500 1,
12 Lower Columbia sport 2012 by hatchery stock and age Total harvest = 15,923 6,000 5,000 4,000 Na 1 ocean 2 ocean 3 ocean 3,000 2,000 1,000 0
13 Lower Columbia Sport 2012 (left) & 2011 (right) July 1 October 31 Dworshak 4% Imnaha 1% Lyons Ferry 6% Dworshak 6% Imnaha 2% Lyons Ferry 7% Other 31% Other 22% Oxbow 17% Wallowa 6% Oxbow 15% Wallowa 10% Sawtooth 14% Pahsimeroi 16% Sawtooth 14% Pahsimeroi 26% 2012 Harvest = 15,923 69% from Snake River 2011 Harvest = 20,602 78% from Snake River
14 r Clipped < 78 cm Tribal Fisheries 2012 Harvest Unclipped < 78 cm Clipped > 78 cm Unclipped > 78 cm Total Clipped harvest Total Unclipped harvest Total harvest 3,304 1,689 1, ,947 2,433 7,381 form 3,951 2, ,059 7,830 l 7,256 4,225 2,462 1,268 9,718 5,493 15,211
15 Steelhead GSI reporting groups
16 Analysis of unclipped fish Calculate a multinomial proportion of the sampled fish Run PBT and GSI panels Assign all fish to GSI reporting group using GSI panel Assign unclipped Snake River hatchery fish to stock, release group, and brood year using PBT (A ib ). Expand the count of each group by its tag rate to get E ib Must subtract (E ib Ab i ) from GSI reporting groups Determine where hatchery groups assign (% to each GSI group) Subtract (t ik * (E ib - A ib ) from each GSI group Calculate proportions for each hatchery release group (E ib /N) and each GSI report group after subtraction Bootstrap to calculate Confidence Intervals
17 Tribal Zone 6 Unclipped Steelhead 2012; n = hatchery origin fish identified with PBT ID Date Location GSI assignment PBT release group BY Length Sex /23 DRANO SFCLWR Dworshak Male /21 MARYHILL SFCLWR Dworshak Male /3 ROOSEVELT UPSALM EF_Sawtooth 2009 Female /23 MARYHILL UPPCOL LF_Tucannon 2009 Female /8 PASTURE POINT UPPCOL LF_Tucannon /9 DRANO UPSALM Oxbow Male /29 DALLES POOL UPSALM Pahsimeroi 2009 Male /9 DRANO MGILCS Wallowa Female /22 CELILO MGILCS Female /22 CELILO KLICKR Female /22 CELILO MGILCS Female /22 CELILO MFSALM Male After expanding for tag rate unclipped hatchery total = 108.2
18 Hatchery release group assignment to GSI groups Release group (all BY s combined) Proportion of release group assigning to GSI group (t ik ) MFSALM MGILCS SFCLWR UPCLWR UPPCOL UPSALM Dworshak 0.0% 4.6% 94.2% 1.2% 0.0% 0.0% EF_Sawtooth 0.0% 23.5% 11.8% 0.0% 0.0% 64.7% Upper Salmon 0.0% 23.5% 11.8% 0.0% 0.0% 64.7% LF_Tucannon 0.0% 63.6% 0.0% 0.0% 27.3% 9.1% Imnaha 0.0% 63.6% 0.0% 0.0% 27.3% 9.1% Lyons Ferry 0.0% 63.6% 0.0% 0.0% 27.3% 9.1% Oxbow 0.0% 33.3% 0.0% 0.0% 0.0% 66.7% Pahsimeroi 0.0% 42.1% 0.0% 0.0% 5.3% 52.6% Sawtooth 2.7% 24.3% 0.0% 0.0% 0.0% 73.0% SBT_Yankee 2.7% 24.3% 0.0% 0.0% 0.0% 73.0% Wallowa 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
19 Tribal unclipped steelhead harvest - Zone 6 in 2012 Total harvest = 5,493 Hatchery Release group (all BY s) Harvest GSI Report group Harvest Dworshak 708 BWSALM 35 EF_Sawtooth 36 KLICKR 62 LF_Tucannon 88 MFSALM 167 Imnaha 39 MGILCS 2,747 Lyons Ferry 18 SFCLWR 141 Oxbow 90 SFSALM 108 Pahsimeroi 137 SKAMAN 70 Sawtooth 35 UPCLWR 249 SBT_Yankee 116 UPPCOL 232 Upper Salmon 28 UPSALM 267 Wallowa 58 YAKIMA 62 Hatchery total 1,353 GSI total: 4,140
20 Tribal Unclipped Zone 6 Harvest (left) & 2011 (right) August 1 end of season Other Wild 8% Idaho Wild 17% Wallowa & Imnaha, 2% Dworshak 13% Lyons Ferry 2% Ox, Pah, Saw 7% Other Wild 8% Idaho Wild 24% Dworshak 22% Ox, Pah, Saw 6% Lyons Ferry 1% MGILCS 50% MGILCS 37% Upper & EF Salmon 1% Upper & EF Salmon 2% 2012 harvest = 5,493 25% Snake River hatchery origin 2011 harvest = 9,295 31% Snake River hatchery origin
21 Tribal Zone 6 Clipped Steelhead harvest in 2012 Sample size = 597. Total harvest = 9,718 2,500 2,000 Na 1 ocean 2/3 ocean 1,500 1,
22 Tribal Clipped Zone 6 Harvest (left) & 2011 (right) August 1 end of season Wallowa 8% Other 6% Other 15% Dworshak 24% Upper Salmon 1% Wallowa 15% Imnaha 1% Sawtooth 10% Dworshak 49% Upper Salmon 0.1% Sawtooth 13% Pahsimeroi 14% Oxbow 15% Lyons Ferry 4% Pahsimeroi 15% Oxbow 9% 2012 harvest = 9,718 85% from Snake River Lyons Ferry 1% 2011 harvest = 18,204 94% from Snake River Imnaha 1%
23
24 Sport in Zone 6 Summer / Fall 2012 Washington Shore; n = 88 73% from Snake River Mouth of Deschutes; n = 70 95% from Snake River John Day Arm; n = % from Snake River
25 2012 Columbia River Harvest by Hatchery Stock 7,000 6,000 5,000 4,000 Tribal unclip Tribal clip Sport 3,000 2,000 1,000 0
26 2011 Columbia River Harvest by Hatchery Stock 14,000 12,000 10,000 Tribal unclip Tribal clip Sport 8,000 6,000 4,000 2,000 0
27 Idaho hatchery Steelhead harvest 100,000 90,000 80,000 70,000 60,000 50,000 40,000 30,000 20,000 10, % 73% Columbia Idaho
28
29 Cumulative proportion Run timing at BON /1 7/15 7/29 8/12 8/26 9/9 9/23 10/7 10/21 Arrival date at BON DWORSHAK OXBOW PAHSIMEROI SAWTOOTH UP-C Chinook
30 Cumulative passage Run timing at BON /1 7/15 7/29 8/12 8/26 9/9 9/23 10/7 10/21 DWORSHAK OXBOW PAHSIMEROI SAWTOOTH Upper-C Chinook
Alan Byrne a, Joe Hymer b, Stuart Ellis c, Roger Dick II d, Ken Keller b, Craig A. Steele e, Jon E. Hess f, Megan Begay d, Joseph D.
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