Hood River Production Program Review, Final Report 1991-2001.

Underwood, K. R.; Chapman, Colin A.; Ackerman, Nicklaus K.

doi:10.2172/962680

Cited by 6 publications

(17 citation statements)

References 34 publications

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“…For example, distinct populations of steelhead trout in Oregon's Hood River occupy either glacial fed or spring fed tributaries (Underwood et al. ; Matala et al. ).…”

Section: Discussionmentioning

confidence: 99%

Relative contributions of neutral and non‐neutral genetic differentiation to inform conservation of steelhead trout across highly variable landscapes

Matala

Ackerman

Campbell

et al. 2014

Evolutionary Applications

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Mounting evidence of climatic effects on riverine environments and adaptive responses of fishes have elicited growing conservation concerns. Measures to rectify population declines include assessment of local extinction risk, population ecology, viability, and genetic differentiation. While conservation planning has been largely informed by neutral genetic structure, there has been a dearth of critical information regarding the role of non-neutral or functional genetic variation. We evaluated genetic variation among steelhead trout of the Columbia River Basin, which supports diverse populations distributed among dynamic landscapes. We categorized 188 SNP loci as either putatively neutral or candidates for divergent selection (non-neutral) using a multitest association approach. Neutral variation distinguished lineages and defined broad-scale population structure consistent with previous studies, but fine-scale resolution was also detected at levels not previously observed. Within distinct coastal and inland lineages, we identified nine and 22 candidate loci commonly associated with precipitation or temperature variables and putatively under divergent selection. Observed patterns of non-neutral variation suggest overall climate is likely to shape local adaptation (e.g., potential rapid evolution) of steelhead trout in the Columbia River region. Broad geographic patterns of neutral and non-neutral variation demonstrated here can be used to accommodate priorities for regional management and inform long-term conservation of this species.

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“…For example, distinct populations of steelhead trout in Oregon's Hood River occupy either glacial fed or spring fed tributaries (Underwood et al. ; Matala et al. ).…”

Section: Discussionmentioning

confidence: 99%

Relative contributions of neutral and non‐neutral genetic differentiation to inform conservation of steelhead trout across highly variable landscapes

Matala

Ackerman

Campbell

et al. 2014

Evolutionary Applications

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show abstract

“…The west fork has the least glacial influence of the three forks in the upper Hood River, has substantially less siltation than the other forks, and contributes roughly half of the main-stem flow. The west fork also has a relatively high composition of deep pool habitat, providing holding areas for SR steelhead (Underwood et al 2003).…”

Section: Methodsmentioning

confidence: 99%

Ecotype Distinctions among Steelhead in Hood River, Oregon, Allow Real‐Time Genetic Assignment of Conservation Broodstocks

et al. 2009

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Efforts to rehabilitate threatened summer-run (SR) and winter-run (WR) populations of steelhead Oncorhynchus mykiss in the Hood River, Oregon, include operation of two conservation hatchery programs. Annual collection of discrete broodstocks relies on identification of SR and WR fish based on return time, reproductive state, and other physical and behavioral characteristics. An increased likelihood of misidentification occurs in the spring, when SR and WR return times overlap. The resulting interbreeding between ecotypes in the hatchery imposes serious genetic risks to wild SR and WR steelhead populations. We characterized life history differences between Hood River SR and WR steelhead and evaluated genetic structure using a suite of microsatellite loci. Significant differences in life history, including age at return and fork length, were corroborated by spatially influenced genetic structure among SR and WR fish; SR fish spawn in the west fork of the Hood River, while WR fish spawn in the east and middle forks. Temporal and spatial distinctions persist among Hood River steelhead ecotypes despite past operation of segregated hatchery programs utilizing out-of-basin stocks. We evaluated the feasibility of using real-time genetic assignment tests to differentiate SR from WR among candidate broodstock fish captured downstream of spawning grounds. Among adult steelhead of known origin, we observed 91.5% assignment accuracy for WR fish and 77.7% accuracy for SR fish. A rapid-response protocol was subsequently developed that provides hatchery managers with genetic assignment of broodstock to ecotypes within 24 h after interrogation of returning fish.

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“…As described in previous segments of this document and in the various guiding documents for the Hood River Production Program (O'Toole and ODFW 1991a;Underwood et al, 2003;HDR FishPro 2008) the natural spring Chinook population was to be re-introduced by stocking Deschutes River, Oregon, stock hatchery smolts in the basin and allowing the returning adults from those releases to spawn in the wild. To this end the HRPP has been successful.…”

Section: Re-establish Naturally Reproducing Spring Chinook Salmonmentioning

confidence: 99%

“…Following the HRPP Program review (Underwood et al, 2003) the Independent Scientific Review Panel (ISRP) suggested that Passive Integrated Transponder (PIT) tags could be an effective method to investigate wild and hatchery fish populations in the Hood River. One issue HRPP managers were concerned with was the potential that hatchery fish releases could provide a significant source of competition with wild fish during juvenile rearing and migration Studies in many other river systems have indicated that hatchery fish (especially steelhead) can residualize at a high rate and could potentially consume resources that would otherwise be available to native fish (Rhine et al 1996, Vincent andSchuck 1995).…”

Section: Introductionmentioning

confidence: 99%

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Hood River Production Program Monitoring and Evaluation (M&E) - Confederated Tribes of Warm Springs : Annual Report For Fiscal Year, October 2007 – September 2008.

Gerstenberger

2009

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Hood River Production Program Review, Final Report 1991-2001.

Cited by 6 publications

References 34 publications

Relative contributions of neutral and non‐neutral genetic differentiation to inform conservation of steelhead trout across highly variable landscapes

Relative contributions of neutral and non‐neutral genetic differentiation to inform conservation of steelhead trout across highly variable landscapes

Ecotype Distinctions among Steelhead in Hood River, Oregon, Allow Real‐Time Genetic Assignment of Conservation Broodstocks

Hood River Production Program Monitoring and Evaluation (M&E) - Confederated Tribes of Warm Springs : Annual Report For Fiscal Year, October 2007 – September 2008.

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