Evaluation of Endocrine Indices of Growth in Individual Postsmolt Coho Salmon
Abstract
Plasma levels of the hormones insulin and insulin-like growth factor-I (IGF-I) were assessed as indices of growth for individual juvenile coho salmon Oncorhynchus kisutch. Smolts were tagged in April, introduced to seawater in May, and reared at two different feeding levels. Fish lengths and weights were obtained in June, August, September, and November. Plasma samples were obtained in September and November. There was a consistent, robust relation (over both feeding rates and sampling dates) between plasma IGF-I and the instantaneous growth in length of individual fish when growth was measured over a 6-week period. There was no consistent association between plasma insulin level and growth, size, or condition factor. Plasma IGF-I levels were also measured in postsmolt coho salmon captured in September from the Strait of Georgia and Puget Sound and were found to be similar to those in laboratory fish.
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Insulin-like growth factor 1 reflects growth during the previous 2 weeks in fish.
“Insulin-like growth factor 1 is produced by the liver and stimulates somatic growth; it reflects growth during the previous 2 weeks (Beckman et al. 1998(Beckman et al. , 2004;;Duguid et al. 2018).”
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 Beckman et al. 2004
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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
- Beckman, B. R., Fairgrieve, W., Cooper, K. A., Mahnken, C. V. W., & Beamish, R. J.
- Affiliations
- NOAA National Marine Fisheries Service (US)
- University of Washington (US)
- Fisheries and Oceans Canada (CA)
- Corresponding author
- Beckman, Brian R.
- Venue
- Transactions of the American Fisheries Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-09-01
- Volume
- 133
- Issue
- 5
- Pages
- 1057-1067
- ISSN
- 0002-8487 (ISSN-L)
- 1548-8659
- OpenAlex
- W1991876271
- Cited by
- 52
- References
- 0
- Citations by year
- 2025: 1 · 2024: 2 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 3 · 2016: 1 · 2015: 2 · 2014: 5 · 2013: 2
- FWCI
- 4.06
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Transactions of the American Fisheries Society (publishedVersion)
- Funders
- National Marine Fisheries Service
- Joint Institute for the Study of the Atmosphere and Ocean
- NOAA (NA17RJ1232)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Fish Biology and Ecology Studies
- Keywords
- coho salmon, insulin-like growth factor I, insulin, plasma hormone levels, individual growth, feeding rate, growth index, condition factor
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