Juvenile Steelhead Distribution, Migration, Feeding, and Growth in the Columbia River Estuary, Plume, and Coastal Waters
Open accessAbstract
Relative to extensive research on the freshwater stages of steelhead Oncorhynchus mykiss life history, little is known about the species' estuarine and early marine phases despite the decline of numerous populations, including several from the Columbia River. Comparisons of the distribution, diet, and growth of juvenile steelhead collected during surveys of the Columbia River estuary and coastal waters in May, June, and September 1998–2011 were analyzed for comparisons between fish caught in the estuary and ocean and between hatchery (marked) and putative wild (unmarked) fish. Almost all catches of juvenile steelhead in the ocean occurred during the May surveys (96%). Juvenile steelhead were consistently caught at the westernmost stations (>55 km from shore), indicating an offshore distribution. Based on otolith structure and chemistry, we determined that these juveniles had been in marine waters for an average of only 9.8 d (SD = 10.2). Some of the steelhead that had been in marine waters for 1–3 d were captured at the westernmost edge of survey transects, indicating rapid offshore migration. Estuary caught fish ate fewer prey types and consumed far less food than did ocean caught fish, which ate a variety of prey, including juvenile fishes, euphausiids, and crab megalopae. Estuary and ocean caught unmarked fish exhibited higher feeding intensities, fewer empty stomachs, and better condition than hatchery fish. Growth hormone levels (insulin like growth factor 1 [IGF 1]) in…
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IGF-1 levels for CRE steelhead overlapped those measured in marine waters off the Washington-Oregon coasts during 2006-2011 and were substantially higher than levels measured in a limited number of juvenile steelhead sampled in the CRE (at the EPS site) during 2008.
“Interestingly, our IGF-1 levels for CRE steelhead overlapped those measured in marine waters off the Washington-Oregon coasts during 2006-2011 and were substantially higher than levels measured in a limited number of juvenile steelhead sampled in the CRE (at the EPS site) during 2008 (Figure 7; Daly et al. 2014).”
From Life in the Fast Lane: Feeding and Growth of Juvenile Steelhead and Chinook Salmon in <scp>Main‐Stem</scp> Habitats of the Columbia River Estuary (2022) · cites this paper as Daly et al. 2014
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The behavior and ecology of Pacific salmon and trout
(2005) · Choice Reviews Online · doi:10.5860/choice.43-0943 · Cited by 1,154 · cited 6× · see citing works
“Populations of steelhead Oncorhynchus mykiss (anadromous Rainbow Trout) are widely distributed along the Pacific coast of North America and extend to the Kamchatka Peninsula in Russia (Augerot 2005).”
BackgroundInfluentialRoegner, G. C., McNatt, R., Teel, D. J., & Bottom, D. L. (2012) · Marine and Coastal Fisheries · doi:10.1080/19425120.2012.675982 · Cited by 36 · cited 1× · see citing works
“A higher proportion of wild Chinook Salmon was sampled in the shallow beach areas of the estuary relative to collections from the estuary channel, suggesting that the wild fish were closer to shore (Roegner et al. 2012; Weitkamp et al. 2012).”
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Weitkamp, L. A., Beckman, B. R., Van Doornik, D. M., Munguia, A., Hunsicker, M., & Journey, M. (2022) · Transactions of the American Fisheries Society · doi:10.1002/tafs.10376 · Cited by 8 · see citing works
Self-citation
- Authors
- Daly, E. A., Scheurer, J. A., Brodeur, R. D., Weitkamp, L. A., Beckman, B. R., & Miller, J. A.
- Affiliations
- Oregon State University (US)
- National Oceanic and Atmospheric Administration (US)
- Venue
- Marine and Coastal Fisheries
- Publisher
- Oxford University Press (OUP)
- Published
- 2014-01-01
- Volume
- 6
- Issue
- 1
- Pages
- 62-80
- ISSN
- 1942-5120 (ISSN-L)
- OpenAlex
- W2118752836
- Cited by
- 28
- References
- 2
- Citations by year
- 2026: 1 · 2024: 4 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 4 · 2015: 2 · 2014: 2
- FWCI
- 2.48
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Marine and Coastal Fisheries (publishedVersion, cc-by)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- Funders
- Bonneville Power Administration
- NOAA Northwest Fisheries Science Center
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Fish Biology and Ecology Studies
- Keywords
- juvenile steelhead, rainbow trout, offshore migration, feeding intensity, fish growth, insulin-like growth factor I, otolith microchemistry, Columbia River estuary, coastal waters
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