Individual variation in migration speed of upriver-migrating sockeye salmon in the Fraser River in relation to their physiological and energetic status at marine approach

Physiological and Biochemical Zoology : PBZ
K C HansonA P Farrell

Abstract

Little research has examined individual variation in migration speeds of Pacific salmon (Oncorhynchus spp.) in natural river systems or attempted to link migratory behavior with physiological and energetic status on a large spatial scale in the wild. As a model, we used three stocks of summer-run sockeye salmon (Oncorhynchus nerka) from the Fraser River watershed, British Columbia, to test the hypothesis that individual variation in migration speed is determined by a combination of environmental factors (i.e., water temperature), intrinsic biological differences (sex and population), and physiological and energetic condition. Before the freshwater portion of the migration, sockeye salmon (Quesnel, Chilcotin, and Nechako stock complexes) were captured in Johnstone Strait ( approximately 215 km from river entry), gastrically implanted with radio transmitters, and sampled for blood, gill tissue, and energetic status before release. Analyses focused solely on individuals that successfully reached natal subwatersheds. Migration speeds were assessed by an extensive radiotelemetry array. Individuals from the stock complex that migrated the longest distance (Nechako) traveled at speeds slower than those of other stock complexes. Female...Continue Reading

References

Jul 1, 1986·The Journal of Experimental Zoology·G E WalsbergS S Hillman
Sep 11, 2003·The Journal of Experimental Biology·Kamini E Jain, Anthony P Farrell
May 17, 2006·Trends in Ecology & Evolution·Steven J CookePatrick J Butler
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Jul 1, 2003·Integrative and Comparative Biology·Cameron K GhalamborDavid N Reznick

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Citations

Jul 8, 2011·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·A M FloresA P Farrell
Nov 19, 2015·Journal of Fish Biology·E J Eliason, A P Farrell
Oct 30, 2012·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Nik VeldhoenCaren C Helbing
Sep 17, 2015·Physiology & Behavior·Naomi PleizierSteven J Cooke
Aug 1, 2009·Evolutionary Applications·Steven J CookeAnthony P Farrell
May 4, 2016·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Jason R TrebergEva C Enders
Feb 24, 2012·The Journal of Experimental Biology·Roger M NisbetLaure Pecquerie

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