THE VALUE OF SHORT-RUN CLIMATE FORECASTS IN MANAGING THE COASTAL COHO SALMON (ONCORHYNCHUS KISUTCH) FISHERY IN WASHINGTON STATE

2008 ◽  
Vol 20 (2) ◽  
pp. 321-349 ◽  
Author(s):  
JANNE H. KAJE ◽  
DANIEL D. HUPPERT
Keyword(s):  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Washington State ◽  
Climate Forecasts ◽  
Short Run

Critical thermal maxima of coho salmon (Oncorhynchus kisutch) fry under field and laboratory acclimation regimes

1995 ◽  
Vol 73 (5) ◽  
pp. 993-996 ◽  
Author(s):  
John T. Konecki ◽  
Carol A. Woody ◽  
Thomas P. Quinn
Keyword(s):  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Washington State ◽  
Published Data ◽  
Critical Thermal Maximum ◽  
Temperature Regimes ◽  
Thermal Maximum ◽  
Critical Thermal Maxima ◽  
Laboratory Acclimation ◽  
Two Populations

Juvenile coho salmon (Oncorhynchus kisutch) from three populations in Washington State were captured in the field and tested for critical thermal maximum (CTM). Tolerances varied among the populations (mean CTMs were 28.21, 29.13, and 29.23 °C) and exceeded published data from some laboratory tests. The population from a relatively cool stream had a lower CTM than the two populations from warmer streams. However, after the salmon had been in the laboratory for 3 months under constant, common temperature regimes, the CTMs no longer differed, indicating that the population-specific differences resulted from different acclimation regimes rather than from genetic adaptation.

Multivariate regression relationships between ocean conditions and early marine survival of coho salmon (Oncorhynchus kisutch)

1999 ◽  
Vol 56 (12) ◽  
pp. 2374-2384 ◽  
Author(s):  
Kristen E Ryding ◽  
John R Skalski
Keyword(s):  
Multivariate Regression ◽  
Coastal Upwelling ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Washington State ◽  
Sea Surface ◽  
Spring Transition ◽  
Recorded Data ◽  
Marine Survival ◽  
Curvilinear Relationships

Washington State hatcheries have released coded wire tagged coho salmon (Oncorhynchus kisutch) since the early 1970s and have recorded data on the number and ages of adult returns. From these data, we isolated marine survival from release to age 2 using a multinomial model incorporating the multivariate structure of the age-at-return data. Only hatcheries on or near the coast were used in the analysis in order to isolate marine effects. Using models to explore linear and curvilinear relationships, early marine survival was regressed against environmental covariates of sea surface temperature (SST), coastal upwelling, and the date of spring transitions. With hatcheries serving as replicates, curvilinear relationships were found between survival and both June SST and the date of spring transition. Maximum survival occurred for a June SST of 13.45°C and for a spring transition date around April 2. The regression results support the idea of optimal environmental conditions for coho salmon survival and may help fisheries managers better understand the dynamics of early marine survival of salmonids.

Effects of experimental flow manipulations on water quality, hypoxia and growth of Threatened Salish sucker (Catostomus sp. cf. catostomus) and juvenile Coho salmon (Oncorhynchus kisutch)

2021 ◽  
Author(s):  
Kaitlyn R Zinn ◽  
Jordan S Rosenfeld ◽  
Eric B Taylor
Keyword(s):  
Habitat Use ◽  
Coho Salmon ◽  
Sublethal Effects ◽  
Oncorhynchus Kisutch ◽  
Washington State ◽  
Fish Movement ◽  
Pit Tag ◽  
Lowland Streams ◽  
Flow Reduction ◽  
Negative Impacts

The Salish sucker (Catostomus sp. cf. catostomus) is a federally Threatened species in Canada, inhabiting small lowland streams along with juvenile Coho salmon (Oncorhynchus kisutch) in southwestern British Columbia and adjacent Washington State. Experiments were conducted in two ponds to determine the effects of reduced flow on dissolved oxygen (DO), growth of Salish sucker and juvenile Coho salmon, and fish movement using Passive Integrated Transponder (PIT) tags. Sequential flow reduction in the first experiment resulted in a significant decrease in DO (9.1 to 3.1 mg·l-1) and Salish sucker growth (23% decline), although lower DO and growth were confounded with decreased temperature. Flow reduction in a second split-pond experiment including Coho salmon resulted in significantly lower DO (6.9 to 2.9 mg·l-1), a 51% reduction in growth of Coho salmon, but no detectable change in Salish sucker growth. PIT tag detections demonstrated increased use by both species of a well-oxygenated refuge in the flow reduction treatment, indicating sublethal effects of hypoxia on fish behaviour and habitat use. These experiments demonstrate the induction of severe hypoxia by reduced flows under eutrophy, with the potential for negative impacts on Salish sucker and juvenile Coho salmon growth and habitat use.

Induced ovulation in coho salmon (Oncorhynchus kisutch). I. Further studies on the use of salmon pituitary preparations

Aquaculture ◽  
1981 ◽  
Vol 26 (1-2) ◽  
pp. 117-127 ◽  
Author(s):  
George A. Hunter ◽  
Edward M. Donaldson ◽  
Helen M. Dye
Keyword(s):  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Induced Ovulation

Physiological Response of Juvenile Coho Salmon (Oncorhynchus kisutch) and Rainbow Trout (Salmo gairdneri) to Handling and Crowding Stress in Intensive Fish Culture

1976 ◽  
Vol 33 (12) ◽  
pp. 2699-2702 ◽  
Author(s):  
Gary A. Wedemeyer
Keyword(s):  
Rainbow Trout ◽  
Feeding Behavior ◽  
Coho Salmon ◽  
Physiological Stress ◽  
Oncorhynchus Kisutch ◽  
Fish Distribution ◽  
Salmo Gairdneri ◽  
Crowding Stress ◽  
Normal Feeding ◽  
Intensive Fish Culture

Moving 4–5-in. coho salmon (Oncorhynchus kisutch) held in soft (20 ppm CaCO3) water from the relatively light loading density of 0.5 lb/ft3 to 1, 2, or 4 lb/ft3 (density index, DI = 0.1, 0.2, 0.4, 0.8) caused significant stress as indicated by loss of feeding behavior, but only minimal physiological disturbances, as indicated by lack of hyperglycemia or hypochloremia. However, moving them to 6 or 12 lb/ft3 (DI = 1.2, 2.4) caused significant physiological stress which required at least a week for recovery. Smolting coho salmon were physiologically stressed by population densities of 1 lb/ft3 or more and a subclinical corynebacterial kidney infection was activated. Rainbow trout (Salmo gairdneri) (4–5 in.) were physiologically stressed when moved and held at 1 lb/ft3 or more but retained normal feeding behavior. This indicates that handling and crowding stress will be minimized in softwater areas if densities in fish distribution trucks or in ponds or raceways during disease treatments are held to 0.1–0.5 lb/gal.

scholarly journals Hyperbilirubinemia of Coho Salmon Oncorhynchus kisutch Infected with Erythrocytic Inclusion Body Syndrome (EIBS) Virus

1994 ◽  
Vol 60 (5) ◽  
pp. 519-521 ◽  
Author(s):  
Tadashi Sakai ◽  
Hisashi Murata ◽  
Kiyoshi Yamauchi ◽  
Kiyotaka Takahashi ◽  
Nobuaki Okamoto ◽  
...  
Keyword(s):  
Inclusion Body ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch
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