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• 1. [Article] Effects of Import and Inventory Amounts on Changes in Wholesale Prices of Salmon in Japan

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Effects of Import and Inventory Amounts on Changes in Wholesale Prices of Salmon in Japan Author: Shimizu, Ikutaro Research Paper Title: Effects of Import and Inventory Amounts on Changes in Wholesale Prices of Salmon in Japan Author: Shimizu, Ikutaro Research Paper Close

• 2. [Article] Salmon consumption at the household level in Japan

  The primary purpose of this study is to investigate the salmon demand of Japanese households. The specific goals are to illuminate the substitutional relationship between salmon and other foods and to examine ...

  Citation × Citation Citation Abstract Copy Title: Salmon consumption at the household level in Japan Author: Kikuchi, Akihiro The primary purpose of this study is to investigate the salmon demand of Japanese households. The specific goals are to illuminate the substitutional relationship between salmon and other foods and to examine seasonal and regional differences in salmon demand. To analyze substitutional relationships and seasonal differences, monthly data on consumption by Japanese households are used. An econometric model was developed in which salmon demand was specified with quantity of salmon consumed as the dependent variable and income (food expenditure), price of salmon and the price of possible substitute commodities as independent variables. To investigate the regional differences, five geographically different regions were selected. Analysis was conducted with annual data. Among the findings are that pork may be a substitute commodity for salmon in Japanese households, and that there are clear seasonal and regional differences in terms of salmon demand at the household level in Japan. Title: Salmon consumption at the household level in Japan Author: Kikuchi, Akihiro The primary purpose of this study is to investigate the salmon demand of Japanese households. The specific goals are to illuminate the substitutional relationship between salmon and other foods and to examine seasonal and regional differences in salmon demand. To analyze substitutional relationships and seasonal differences, monthly data on consumption by Japanese households are used. An econometric model was developed in which salmon demand was specified with quantity of salmon consumed as the dependent variable and income (food expenditure), price of salmon and the price of possible substitute commodities as independent variables. To investigate the regional differences, five geographically different regions were selected. Analysis was conducted with annual data. Among the findings are that pork may be a substitute commodity for salmon in Japanese households, and that there are clear seasonal and regional differences in terms of salmon demand at the household level in Japan. Close

• 3. [Article] Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions

  Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition ...

  Citation × Citation Citation Abstract Copy Title: Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions Author: Losee, James P. Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in the nearshore environment which, in turn, can affect the quality of prey for fish, sea birds and mammals. Interannual variability in the quality and composition of the copepod community in the NCC during early marine residency of some Pacific salmon populations is related to survival to adulthood. However, copepods make up a small portion of the diet of coho and Chinook salmon, and the mechanistic linkages between ocean climate, zooplankton composition and salmon prey remain unclear. Parasite analysis provides a supplement to traditional diet analysis that can describe the foraging history of a host species. Coho salmon (O. kisutch) and Chinook salmon (O. tshawytscha) serve as hosts to an array of marine parasites acquired through consumption of infected intermediate hosts such as copepods, euphausiids, and planktivorous fishes. Causing little or no harm to their salmon host, the presence of trophically transmitted parasites provides information on the dietary history of their salmonid host beyond the 24 hours associated with traditional diet analysis. This study (1) examined differences in feeding behavior of coho and Chinook salmon during their early marine residency using both stomach and parasite community analyses and (2) tested the hypothesis that variability in ocean circulation patterns (measured through the Pacific Decadal Oscillation, sea surface temperature (SST) and Bakun's upwelling index) and copepod species composition are related to variability in the community structure of trophically transmitted marine parasites found in juvenile salmon. I compared the abundance and species composition of parasites recovered from juvenile Columbia River coho and upper Columbia River summer and fall Chinook salmon captured off the coast of Washington from 2002 to 2009. I also compared interannual variability in parasite assemblages to physical and biological indices of ocean conditions. Coho and Chinook salmon consumed similar prey taxa; however, the species richness and abundance of trophically transmitted parasites indicated that Chinook salmon consumed a greater diversity and abundance of infected prey. In addition, differences in the abundance of fish in the diet and Anisakis simplex, a parasitic nematode known to infect salmon through fish consumption, suggest that Chinook salmon consistently consumed more fish prey than coho. In contrast, coho appeared to consume more euphausiids as indicated by stomach content analysis and increased abundance of the euphausiid parasite, Rhadinorhynchus trachuri. Shifts in the parasite community composition of both coho and Chinook salmon were related to interannual variability in SST and the biomass of southern-origin copepods (r > 0.7, P < 0.05). The acanthocephalan R. trachuri and a tetraphyllid cestode were associated with "warm" SSTs and greater biomass of lipid-poor, subtropical copepods while the nematode A. simplex was more abundant in years of "cold" SST and a relatively low biomass of subtropical copepods. These results provide novel insight into differences in the diet of Columbia River coho and Chinook salmon and illustrate linkages between ocean climate, zooplankton community composition and salmon diet during early marine residency. Title: Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions Author: Losee, James P. Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in the nearshore environment which, in turn, can affect the quality of prey for fish, sea birds and mammals. Interannual variability in the quality and composition of the copepod community in the NCC during early marine residency of some Pacific salmon populations is related to survival to adulthood. However, copepods make up a small portion of the diet of coho and Chinook salmon, and the mechanistic linkages between ocean climate, zooplankton composition and salmon prey remain unclear. Parasite analysis provides a supplement to traditional diet analysis that can describe the foraging history of a host species. Coho salmon (O. kisutch) and Chinook salmon (O. tshawytscha) serve as hosts to an array of marine parasites acquired through consumption of infected intermediate hosts such as copepods, euphausiids, and planktivorous fishes. Causing little or no harm to their salmon host, the presence of trophically transmitted parasites provides information on the dietary history of their salmonid host beyond the 24 hours associated with traditional diet analysis. This study (1) examined differences in feeding behavior of coho and Chinook salmon during their early marine residency using both stomach and parasite community analyses and (2) tested the hypothesis that variability in ocean circulation patterns (measured through the Pacific Decadal Oscillation, sea surface temperature (SST) and Bakun's upwelling index) and copepod species composition are related to variability in the community structure of trophically transmitted marine parasites found in juvenile salmon. I compared the abundance and species composition of parasites recovered from juvenile Columbia River coho and upper Columbia River summer and fall Chinook salmon captured off the coast of Washington from 2002 to 2009. I also compared interannual variability in parasite assemblages to physical and biological indices of ocean conditions. Coho and Chinook salmon consumed similar prey taxa; however, the species richness and abundance of trophically transmitted parasites indicated that Chinook salmon consumed a greater diversity and abundance of infected prey. In addition, differences in the abundance of fish in the diet and Anisakis simplex, a parasitic nematode known to infect salmon through fish consumption, suggest that Chinook salmon consistently consumed more fish prey than coho. In contrast, coho appeared to consume more euphausiids as indicated by stomach content analysis and increased abundance of the euphausiid parasite, Rhadinorhynchus trachuri. Shifts in the parasite community composition of both coho and Chinook salmon were related to interannual variability in SST and the biomass of southern-origin copepods (r > 0.7, P < 0.05). The acanthocephalan R. trachuri and a tetraphyllid cestode were associated with "warm" SSTs and greater biomass of lipid-poor, subtropical copepods while the nematode A. simplex was more abundant in years of "cold" SST and a relatively low biomass of subtropical copepods. These results provide novel insight into differences in the diet of Columbia River coho and Chinook salmon and illustrate linkages between ocean climate, zooplankton community composition and salmon diet during early marine residency. Close

• 4. [Article] Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1988

  Project period: 1 May 1988 - 30 April 1989

  Citation × Citation Citation Abstract Copy Title: Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1988 Author: Schindler, Eric D., Jacobs, Steven E., Lewis, Mark A., Oregon Dept. of Fish and Wildlife Project period: 1 May 1988 - 30 April 1989 Title: Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1988 Author: Schindler, Eric D., Jacobs, Steven E., Lewis, Mark A., Oregon Dept. of Fish and Wildlife Project period: 1 May 1988 - 30 April 1989 Close

• 5. [Article] Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1987

  Project period: 15 June 1987 to 30 June 1988.

  Citation × Citation Citation Abstract Copy Title: Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1987 Author: Boechler, Jeffrey L., Jacobs, Steven E., Oregon Dept. of Fish and Wildlife Project period: 15 June 1987 to 30 June 1988. Title: Catch and escapement of fall chinook salmon from Salmon River, Oregon, 1987 Author: Boechler, Jeffrey L., Jacobs, Steven E., Oregon Dept. of Fish and Wildlife Project period: 15 June 1987 to 30 June 1988. Close

• 6. [Article] Estimating pollution abatement costs of salmon aquaculture

  Abstract only.

  Citation × Citation Citation Abstract Copy Title: Estimating pollution abatement costs of salmon aquaculture Author: Sumaila, Rashid, Liu, Yajie, Gulati, Sumeet Abstract only. Title: Estimating pollution abatement costs of salmon aquaculture Author: Sumaila, Rashid, Liu, Yajie, Gulati, Sumeet Abstract only. Close

• 7. [Article] Modeling of Chinook Salmon Runs on the North Umpqua River

  Paper entitled: Modeling of Chinook Salmon Runs on the North Umpqua River

  Citation × Citation Citation Abstract Copy Title: Modeling of Chinook Salmon Runs on the North Umpqua River Author: Jordan, Scott Paper entitled: Modeling of Chinook Salmon Runs on the North Umpqua River Title: Modeling of Chinook Salmon Runs on the North Umpqua River Author: Jordan, Scott Paper entitled: Modeling of Chinook Salmon Runs on the North Umpqua River Close

• 8. [Article] Canadian chum salmon export market study

  The primary objective of this study was to identify and investigate the underlying basis for variation in the volume of exports of Canadian chum salmon during 1954-1975 period. A number of factors thought ...

  Citation × Citation Citation Abstract Copy Title: Canadian chum salmon export market study Author: Abraham, Gideon The primary objective of this study was to identify and investigate the underlying basis for variation in the volume of exports of Canadian chum salmon during 1954-1975 period. A number of factors thought to be of importance in the determination of the volume of exports of chum salmon were hypothesized. These factors were: chum salmon price» the price of substitute commodities, the consumer income, population, general price level in importing countries, and fluctuations in exchange rates between Canadian currency and the currencies of the importing countries. The theoretical model was reformulated in terms of empirical models of demand for Canadian chum salmon in: West Germany, Sweden, and Italy. The empirical analysis focused upon the effects on annual export volume of changes in prices of Canadian chum salmon, changes in prices of salmon from other countries, and changes in consumer income in importing countries. The results suggest that: (1) in the case of Germany and Sweden, changes in prices of salmon from other countries and changes in consumer income, (2) in Italy, changes in Canadian chum salmon prices and changes in prices of salmon from other countries have been of principal importance in the determination of volume of exports of Canadian chum salmon. Title: Canadian chum salmon export market study Author: Abraham, Gideon The primary objective of this study was to identify and investigate the underlying basis for variation in the volume of exports of Canadian chum salmon during 1954-1975 period. A number of factors thought to be of importance in the determination of the volume of exports of chum salmon were hypothesized. These factors were: chum salmon price» the price of substitute commodities, the consumer income, population, general price level in importing countries, and fluctuations in exchange rates between Canadian currency and the currencies of the importing countries. The theoretical model was reformulated in terms of empirical models of demand for Canadian chum salmon in: West Germany, Sweden, and Italy. The empirical analysis focused upon the effects on annual export volume of changes in prices of Canadian chum salmon, changes in prices of salmon from other countries, and changes in consumer income in importing countries. The results suggest that: (1) in the case of Germany and Sweden, changes in prices of salmon from other countries and changes in consumer income, (2) in Italy, changes in Canadian chum salmon prices and changes in prices of salmon from other countries have been of principal importance in the determination of volume of exports of Canadian chum salmon. Close

• 9. [Article] The demand for salmon in the European Union : the importance of product form and origin

  Research Paper

  Citation × Citation Citation Abstract Copy Title: The demand for salmon in the European Union : the importance of product form and origin Author: Salvanes, Kjell G., Asche, Frank, Bjerndal, Trond Research Paper Title: The demand for salmon in the European Union : the importance of product form and origin Author: Salvanes, Kjell G., Asche, Frank, Bjerndal, Trond Research Paper Close

• 10. [Article] The size of the Oregon coastal salmon runs in the mid-1800s

  Abstract.- Increasing the abundance of salmon in coastal Oregon rivers and streams is a high priority public policy objective. Salmon runs have been reduced from pre-development conditions (typically defined ...

  Citation × Citation Citation Abstract Copy Title: The size of the Oregon coastal salmon runs in the mid-1800s Author: Meengs, Chad C. Abstract.- Increasing the abundance of salmon in coastal Oregon rivers and streams is a high priority public policy objective. Salmon runs have been reduced from pre-development conditions (typically defined as the 1 850s), but it is unclear by how much. Considerable resources have been allocated to restoring salmon runs, but it is uncertain what the current recovery potential is because much of the freshwater and estuarine habitat for salmon has been altered. The goals of all recovery efforts are based on assumptions, often unstated, for what the size if the runs were prior to significant habitat alteration, coupled with an estimate of the amount and quality of freshwater and estuarine habitat currently available. At one extreme, it may be that current run sizes reflect the recovery potential of the existing salmon habitat. At the other extreme, the recovery potential may be as high as the mid 1800 levels. Historical salmon runs sizes on the Oregon coast were estimated using two methods: (1) Converting aboriginal population levels and their salmon consumption rate into numbers of salmon; (2) Extrapolating cannery pack into numbers of salmon. Annual aboriginal harvest of all salmon species is estimated to have been approximately 10 million pounds/year or between 1.75 million and 5.36 million salmonids, a harvest level similar to that occurring during the height of commercial fishing on Oregon's coastal rivers in the late 1 800s and early 1 900s. Extrapolating cannery pack data, the estimated size of the late 1 800s aggregate runs of coho (Oncorhynchus kisutch) was 1.5-2.5 million. The estimated size of aggregate runs of chinook (Oncorhynchus tshawytscha) runs was 290,000-517,000. Compared to mid 1 800s coho estimates, current runs (during favorable ocean conditions), are 11-19%. During poor ocean conditions, current coho runs are 3-6% of the historical size. Title: The size of the Oregon coastal salmon runs in the mid-1800s Author: Meengs, Chad C. Abstract.- Increasing the abundance of salmon in coastal Oregon rivers and streams is a high priority public policy objective. Salmon runs have been reduced from pre-development conditions (typically defined as the 1 850s), but it is unclear by how much. Considerable resources have been allocated to restoring salmon runs, but it is uncertain what the current recovery potential is because much of the freshwater and estuarine habitat for salmon has been altered. The goals of all recovery efforts are based on assumptions, often unstated, for what the size if the runs were prior to significant habitat alteration, coupled with an estimate of the amount and quality of freshwater and estuarine habitat currently available. At one extreme, it may be that current run sizes reflect the recovery potential of the existing salmon habitat. At the other extreme, the recovery potential may be as high as the mid 1800 levels. Historical salmon runs sizes on the Oregon coast were estimated using two methods: (1) Converting aboriginal population levels and their salmon consumption rate into numbers of salmon; (2) Extrapolating cannery pack into numbers of salmon. Annual aboriginal harvest of all salmon species is estimated to have been approximately 10 million pounds/year or between 1.75 million and 5.36 million salmonids, a harvest level similar to that occurring during the height of commercial fishing on Oregon's coastal rivers in the late 1 800s and early 1 900s. Extrapolating cannery pack data, the estimated size of the late 1 800s aggregate runs of coho (Oncorhynchus kisutch) was 1.5-2.5 million. The estimated size of aggregate runs of chinook (Oncorhynchus tshawytscha) runs was 290,000-517,000. Compared to mid 1 800s coho estimates, current runs (during favorable ocean conditions), are 11-19%. During poor ocean conditions, current coho runs are 3-6% of the historical size. Close