An Acoustic Estimate of the Escapement of Sockeye Salmon (Oncorhynchus nerka) into Lake Washington in 1971

1974 ◽  
Vol 31 (2) ◽  
pp. 222-225 ◽  
Author(s):  
Richard E. Thorne ◽  
James J. Dawson
Keyword(s):  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Spawning Migration ◽  
Spawning Ground ◽  
Large Fish ◽  
Before And After ◽  
Lake Washington

The feasibility of estimating the escapement of sockeye salmon (Oncorhynchus nerka) into Lake Washington by hydroacoustics was explored during 1971. Surveys were made of large fish targets within the lake just before and after the spawning migration of sockeye salmon up the Cedar River. A decrease was observed after the spawning migration comparable to the estimated escapement as determined by weir counts and spawning ground surveys.

Hydroacoustic Estimates of Adult Sockeye Salmon (Oncorhynchus nerka) in Lake Washington, 1972–75

1979 ◽  
Vol 36 (9) ◽  
pp. 1145-1149 ◽  
Author(s):  
Richard E. Thorne
Keyword(s):  
Key Words ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Target Strength ◽  
Spawning Ground ◽  
Resident Fish ◽  
Lake Washington ◽  
Visual Observations

Hydroacoustic techniques were used on Lake Washington from 1972 to 1975 to estimate the potential escapement of sockeye salmon (Oncorhynchus nerka). Target strength measurements were used to establish a threshold which would separate the larger adult sockeye salmon from smaller resident fish. The acoustic estimates of escapement were very similar to those obtained from visual observations at the Hiram M. Chittenden ship canal locks, observations on the Cedar River, and spawning ground surveys. Key words: hydroacoustic, acoustic, methodology, sockeye salmon, escapement

Biochemical Studies on Sockeye Salmon During Spawning Migration: XI. The Free Histidine Content of the Tissues

1960 ◽  
Vol 17 (3) ◽  
pp. 347-351 ◽  
Author(s):  
J. D. Wood ◽  
D. W. Duncan ◽  
M. Jackson
Keyword(s):  
Amino Acid ◽  
Sockeye Salmon ◽  
Alimentary Tract ◽  
Oncorhynchus Nerka ◽  
The Other ◽  
Spawning Migration ◽  
Fraser River ◽  
Initial Value ◽  
Spawning Grounds ◽  
Biochemical Studies

During the first 250 miles (400 km) of spawning migration of Fraser River sockeye salmon (Oncorhynchus nerka) the free histidine content of the muscle, alimentary tract, and head+skin+bones+tail decreased to a small fraction of the initial value. A further decrease occurred in the levels of this amino acid in the alimentary tract during the subsequent 415-mile (657-km) migration to the spawning grounds, no change being observed with the other tissues. Comparatively small changes in free histidine were found with heart, spleen, liver, kidney and gonads during migration.

Xenobiotic metabolizing enzyme activity in sockeye salmon (Oncorhynchus nerka) during spawning migration

1992 ◽  
Vol 34 (1-4) ◽  
pp. 293-298 ◽  
Author(s):  
John M. Kennish ◽  
Reese A. Bolinger ◽  
Kent A. Chambers ◽  
Melinda L. Russell
Keyword(s):  
Enzyme Activity ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Spawning Migration ◽  
Metabolizing Enzyme

scholarly journals Physiology of individual late-run Fraser River sockeye salmon (Oncorhynchus nerka) sampled in the ocean correlates with fate during spawning migration

2006 ◽  
Vol 63 (7) ◽  
pp. 1469-1480 ◽  
Author(s):  
Steven J Cooke ◽  
Scott G Hinch ◽  
Glenn T Crossin ◽  
David A Patterson ◽  
Karl K English ◽  
...  
Keyword(s):  
Sockeye Salmon ◽  
Acute Stress ◽  
Oncorhynchus Nerka ◽  
Spawning Migration ◽  
Fraser River ◽  
Stress Indicators ◽  
Spawning Areas ◽  
Plasma Estradiol ◽  
Somatic Energy ◽  
Estradiol Levels

Beginning in 1995, segments of the late-run sockeye salmon (Oncorhynchus nerka) stocks from the Fraser River, British Columbia, have initiated upriver spawning migration up to 6 weeks earlier than historical records; and those fish have experienced high rates of en route mortality. We examined the correlations between physiological and energetic status prior to river entry with subsequent migratory performance of individual salmon using telemetry and noninvasive biopsies for Adams–Thompson–Shuswap (Adams) and Weaver–Harrison (W–H) stocks. Salmon that failed to reach the river were characterized by a tendency to have elevated levels of chronic and acute stress indicators. For one stock of fish (i.e., Adams) that entered the river, those that died before reaching spawning grounds were individuals with low gross somatic energy. Furthermore, females tended to have elevated plasma estradiol levels. When contrasting fish with different behaviours and fates, fish that did not hold in the estuary and subsequently died tended to have less energy than fish that held and reached spawning areas. Females from the former group also had higher 11-ketotestosterone and estradiol levels relative to those from the later group. These data suggest that differences in physiological and energetic status may be associated with high en route mortality in late-run sockeye salmon.

Biochemical Studies on Sockeye Salmon During Spawning Migration. V. Cholesterol, Fat, Protein and Water in the Body of the Standard Fish

1959 ◽  
Vol 16 (2) ◽  
pp. 235-241 ◽  
Author(s):  
D. R. Idler ◽  
I. Bitners
Keyword(s):  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
The Body ◽  
Spawning Migration ◽  
Sampling Station ◽  
Entire Body ◽  
Fraser River ◽  
Spawning Grounds ◽  
Male And Female ◽  
Biochemical Studies

The absolute changes in fat, protein, water and free and esterified cholesterol for the entire body of standard male and female sockeye salmon (Oncorhynchus nerka) during the Fraser River spawning migration are discussed.The data were obtained for twelve groups of males and twelve groups of females, totalling 216 fish. The fish were caught at three locations: before entering the river, 250 miles up the river, and at one of the spawning grounds 715 miles from the first sampling station.

Estimating Stock Composition of Migrating Juvenile Fraser River (British Columbia) Sockeye Salmon, Oncorhynchus nerka, Using Parasites as Natural Tags

1988 ◽  
Vol 45 (4) ◽  
pp. 586-591 ◽  
Author(s):  
R. E. Bailey ◽  
L. Margolis ◽  
C. Groot
Keyword(s):  
British Columbia ◽  
Maximum Likelihood ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Fraser River ◽  
Dominant Group ◽  
Strait Of Georgia ◽  
Natural Tags ◽  
Lake Washington ◽  
The Individual

Simulated mixtures of juvenile sockeye salmon (Oncorhynchus nerka) were constructed using parasite data to represent proportionally the major component stocks of Fraser River and Lake Washington sockeye migrating within the Strait of Georgia, British Columbia, in 1982–84. Samples of migrating juveniles were also collected from Bedwell Harbour, South Pender Island, British Columbia, each year and analyzed for parasites and stock composition. The compositions of simulated and sample mixtures were estimated using a maximum likelihood stock composition model. Simulated mixture compositions were accurately estimated for most stocks for all year-classes. When significant misassignment occurred between stocks, the stocks were analyzed as a complex using the allocate-sum procedure. Sample mixture estimates correctly identified the dominant stock for each year-class, although for 1984 the dominant group was determined as a complex of three stocks because the individual stocks were not distinguishable. The results indicate that it is feasible to use parasites as natural tags to estimate stock compositions of migrating juvenile sockeye salmon in the Strait of Georgia.

Sex differences in circulatory oxygen transport parameters of sockeye salmon (Oncorhynchus nerka) on the spawning ground

2009 ◽  
Vol 179 (5) ◽  
pp. 663-671 ◽  
Author(s):  
Timothy Darren Clark ◽  
S. G. Hinch ◽  
B. D. Taylor ◽  
P. B. Frappell ◽  
A. P. Farrell
Keyword(s):  
Sex Differences ◽  
Oxygen Transport ◽  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Spawning Ground ◽  
Transport Parameters

Transcriptomics of environmental acclimatization and survival in wild adult Pacific sockeye salmon (Oncorhynchus nerka) during spawning migration

2011 ◽  
Vol 20 (21) ◽  
pp. 4472-4489 ◽  
Author(s):  
TYLER G. EVANS ◽  
EDD HAMMILL ◽  
KARIA KAUKINEN ◽  
ANGELA D. SCHULZE ◽  
DAVID A. PATTERSON ◽  
...  
Keyword(s):  
Sockeye Salmon ◽  
Oncorhynchus Nerka ◽  
Spawning Migration
Sign in / Sign up

Export Citation Format

Share Document