A potentially unique type of lipid storage in the migrating pink salmon

1970 ◽  
Vol 48 (8) ◽  
pp. 837-840 ◽  
Author(s):  
J. Stephen Robinson ◽  
James F. Mead
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Cholesterol Ester ◽  
Pink Salmon ◽  
Relative Increase ◽  
Oncorhynchus Gorbuscha ◽  
Unique Type ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
The Individual ◽  
High Triglyceride

Analysis of the composition of the hump developed by the pink salmon (Oncorhynchus gorbuscha) during the spawning migration has revealed that it consists largely of lipid at the start of the migration and that lipid is largely replaced by water at the end. Quantitation of the individual lipids reveals that the high triglyceride present at the start decreases, resulting in a relative increase of cholesterol ester and free fatty acid during the migration.

scholarly journals Fatty Acid Composition of Dorsal Muscles of Pink Salmon(Oncorhynchus gorbuscha).

1997 ◽  
Vol 44 (2) ◽  
pp. 149-152
Author(s):  
Takamasa KASAI ◽  
Naomi NAGAOKA ◽  
Katsuhiro INOUE ◽  
Masaru TSUJIMURA
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha

Effects of salmon on the diet and condition of stream-resident sculpins

2014 ◽  
Vol 71 (4) ◽  
pp. 521-532 ◽  
Author(s):  
Noel R. Swain ◽  
Morgan D. Hocking ◽  
Jennifer N. Harding ◽  
John D. Reynolds
Keyword(s):  
Chum Salmon ◽  
Pacific Salmon ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Oncorhynchus Keta ◽  
Nitrogen Stable Isotope ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Carbon And Nitrogen ◽  
Stable Isotope Signatures ◽  
The Individual

Pacific salmon (Oncorhynchus spp.) can subsidize freshwater food webs with marine-derived nutrients from their eggs, juveniles, and carcasses. However, trophic interactions between spawning salmon and freshwater fish across natural gradients in salmon subsidies remain unclear. We tested how salmon affected the diets and condition of two dominant freshwater consumers — prickly and coastrange sculpins (Cottus asper and Cottus aleuticus, respectively) — across a wide gradient of pink salmon (Oncorhynchus gorbuscha) and chum salmon (Oncorhynchus keta) biomass from 33 streams in the Great Bear Rainforest of British Columbia, Canada. Sculpin diets shifted from invertebrates and juvenile salmonids to salmon eggs when salmon arrived in autumn, with salmon-derived nutrient contributions to diets and sculpin condition increasing with increasing biomass of spawning salmon among streams. Season, habitat, and individual sculpin body size and species also mediated the effects of salmon on sculpin diet as inferred from their carbon and nitrogen stable isotope signatures. This study shows the timing and pathways by which spawning salmon influence the diets and condition of freshwater consumers, and some of the individual and environmental factors that can regulate uptake of salmon nutrients in streams, thus informing ecosystem-based management.

Supplementary Checks on the Scales of Pink Salmon (Oncorhynchus gorbuscha) and Chum Salmon (O. keta)

1965 ◽  
Vol 22 (6) ◽  
pp. 1477-1489 ◽  
Author(s):  
H. T. Bilton ◽  
W. E. Ricker
Keyword(s):  
British Columbia ◽  
Chum Salmon ◽  
Pink Salmon ◽  
Oncorhynchus Gorbuscha ◽  
Commercial Fisheries ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Clear Cut ◽  
Second Year Of Life ◽  
Second Year ◽  
Similar Incidence

Among 159 central British Columbia pink salmon that had been marked by removal of two fins as fry and had been recovered in commercial fisheries after one winter in the sea, the scales of about one-third showed a supplementary or "false" check near the centre of the scale, in addition to the single clear-cut annulus. This evidence from fish of known age confirms the prevailing opinion that such extra checks do not represent annuli, hence that the fish bearing them are in their second year of life rather than their third. Unmarked pink salmon from the same area, and some from southern British Columbia, had a generally similar incidence of supplementary checks. In both marked and unmarked fish the supplementary checks varied in distinctness from faint to quite clear. In a sample of scales of 14 double-fin marked chum salmon which were known to be in their 4th year, all fish had the expected 3 annuli, and 12 fish had a supplementary check inside the first annulus.

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