1,807,638 research outputs found
A Salmon Arm scrapbook
Full text linkBook published by the Salmon Arm Museum and Heritage Association to commemorate the 75th anniversary of the city. The scrapbook contains prints of photographs as well as stories about the city's early history, contributed by members of the community
Oregon's salmon conservation plan
No full text"24 February 1997."This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
The efficacy of emamectin benzoate against infestations of Lepeophtheirus salmonis on farmed Atlantic salmon (Salmo salar L) in Scotland, 2002-2006
No full textInfestations of the parasitic copepod Lepeophtheirus salmonis, commonly referred to as sea lice, represent a major challenge to commercial salmon aquaculture. Dependence on a limited number of theraputants to control such infestations has led to concerns of reduced sensitivity in some sea lice populations. This study investigates trends in the efficacy of the in-feed treatment emamectin benzoate in Scotland, the active ingredient most widely used across all salmon producing regions. Study data were drawn from over 50 commercial Atlantic salmon farms on the west coast of Scotland between 2002 and 2006. An epi-informatics approach was adopted whereby available farm records, descriptive epidemiological summaries and statistical linear modelling methods were used to identify factors that significantly affect sea lice abundance following treatment with emamectin benzoate (SLICEH, Schering Plough Animal Health). The results show that although sea lice infestations are reduced following the application of emamectin benzoate, not all treatments are effective. Specifically there is evidence of variation across geographical regions and a reduction in efficacy over time. Reduced sensitivity and potential resistance to currently available medicines are constant threats to maintaining control of sea lice populations on Atlantic salmon farms. There is a need for on-going monitoring of emamectin benzoate treatment efficacy together with reasons for any apparent reduction in performance. In addition, strategic rotation of medicines should be encouraged and empirical evidence for the benefit of such strategies more fully evaluated
Structural Factors on Changes in the Supply and Demand of Salmon in Japan
Full text linkJapanese salmon fishery is facing a juncture of existence and is pressed for the impro vement of a constitution. The decline of high-seas salmon fisheries was taken and the import amount increased rapidly. In addition, domestic salmon production by coastal set net fisheries has increased with a success of salmon enhancement in Japan. Salmon market has internationalized consequently, decreasing wholesale prices of domestic salmon in Japan. Domestic salmon prices are determined by inventory and import amounts and current salmon fishery production, and wholesale prices of domestic salmon were influenced by prices of imported salmon. Though there are a lot of consumption of salmon in the northern and eastern part of Japan, there may be a capability of demand expansion in the western part of Japan. Freshness, commodity-making, development of new markets for consumer and conservation of food safety will be important for the stability of wholesale prices of domestic salmon.articl
Buyer and Seller Responses to an Adverse Food Safety Event: The Case of Frozen Salmon in Alberta
Full text linkFish is a low-fat protein source high in omega-3 fatty acids, but in 2004 consumers also heard that farmed salmon had high levels of polychlorinated biphenyl (PCBs). This research evaluated how Canadian consumers and processors reacted to the conflicting health messages. Demand estimates and time-series analysis of 2001-2006 frozen meat scanner data in Alberta, Canada show a significant drop in salmon expenditure share following the PCB finding. The industry responded by launching low-priced wild salmon products, which contributed to significant demand expansion. The analysis illustrates how a food safety threat was averted and even served as a catalyst for growth.salmon, scanner data, food safety, demand, directed acyclic graphs, Demand and Price Analysis, Food Consumption/Nutrition/Food Safety, Research Methods/ Statistical Methods, Q10, Q11, Q16, Q22,
Variation in Lipid Content in the Muscle of Chum and Pink Salmon in the Gulf of Alaska in May l999
Full text linkWe report on a study of the total lipid content (TL) of chum and pink salmon in the Gulf of Alaska in May 1999. Chum and pink salmon were caught by surface trawl net in the Gulf of Alaska during a spring cruise of the F/V Great Pacific. TL was extracted from the muscle of 99 chum and 50 pink salmon by Folch's method using chloroform/methanol and measured gravimetrically. A significant difference in the total lipid content by ocean age was observed in chum salmon. Younger chum salmon (ocean age -. 1 and .2) had lower lipid content than older fish (ocean age -. 3 and .4). Mean TL in pink salmon was 2.6% in females and 2.7% in males. Our results suggest that low lipid content, previously observed in hig-seas salmon during the winter season, is prolonged into the spring in young chum and pink salmon.articl
Factors on Short-and Long-Term Changes in Wholesale Prices of Salmon in Hokkaido
Full text link北海道の主要水揚港における生鮮サケの価格変動に着目し、その短期および長期の変動要因を検討した。サケの水揚げが前年よりも減少した年の産地価格は前年の価格より上昇し、逆に水揚げが前年よりも増加した年の産地価格は前年の価格より下がった。水揚港におけるサケの価格は水揚量との間で負の相関が見られたことから、水揚港でのサケの価格は水揚量によって規定されていることが明らかになった。また、北海道の主要水揚港におけるサケの産地価格が生鮮サケ・マス類の輸入量の影響を受けていることが明らかになった。北海道全体のサケの産地価格は生鮮サケ・マス類の輸入量の影響で長期変動を示し、地域におけるサケの産地価格は水揚量の影響で短期変動を示した。Factors on short-term and long-term changes in the wholesale price of salmon at the main landing ports in Hokkaido were examined. The wholesale price increased in the year when the landing amount of salmon decreased from the previous year. A negative correlation between the landing amount and prices of salmon at the landing port indicated that the prices of salmon were influenced by the landing amount. It was also clarified that the import amount of salmon influenced the wholesale price of salmon. The wholesale price of salmon in the entire Hokkaido showed the long-term variability depending on the amount of imported salmon, and the wholesale price of salmon in the regions showed the short-term variability depending on the amount of landed salmon.articl
Effects of Import and Inventory Amounts of Salmon on Wholesale Price Function of Fresh Salmon in Japan
Full text linkRelationships between annual variation in the wholesale price of fresh salmon and annual variation in the fishery production， import and inventory amounts of salmon were analyzed by econometric methods to elucidate factors on wholesale price function of salmon caught in Japan. The wholesale price of fresh salmon was affected not only by fishery production of fresh salmon but also by import and invento1y amounts of fresh salmon in sync. The wholesale price of fresh salmon decreased when inventory or import amount of fresh salmon increased， and it also decreased when inventory amount of salted salmon roe and fishery production of fresh salmon increased. An increase in the inventory amount of fresh salmon in recent years was caused by mass import of farmed fresh salmon in winter.articl
Using an International Econometric Model to Forecast Alaska Salmon Revenues
Full text linkAs Alaska prices tumbled in the 1990s, Alaska's Senate Special Committee on Domestic and International Commercial Fisheries requested a comprehensive review of the Alaska salmon enhancement program. As part of this review, a revenue analysis was performed to examine the effects of various salmon enhancement production levels on future revenue generated to salmon fishers working in Alaska waters. The results were then used in a cost/benefit analysis of the state's enhancement program for sockeye, chinook, coho, chum, and pink salmon. This report focuses on the two most important Alaska salmon species, sockeye and pink. Results of the revenue analysis indicate that for sockeye salmon, future revenues would increase if output from salmon enhancement were expanded. For pink salmon, revenues would decrease if salmon enhancement were expanded and increase if salmon enhancement were scaled back. However, a complete elimination of the pink hatchery program would decrease revenues. For both species, there are important regional differences.Consumer/Household Economics, Demand and Price Analysis, Environmental Economics and Policy,
Spring salmon enhancement on the Delphi Fishery, Ireland
Full text linkThis paper summarises the results of an Atlantic salmon (Salmo salar) enhancement programme on the Delphi Fishery in the west of Ireland between 1991 and 1995. The aim of the programme was to increase salmon rod catches in the wake of a sea trout stock collapse. Smolts from two other Irish rivers, Burrishoole and Corrib, were released alongside Delphi fish and differentially tagged.
Record angling catches were subsequently recorded. Catch rates varied from 0.6 to 12.7 per 1,000 smolts released. The comparative performance of the different stocks is assessed, with significant differences emerging between the stocks and between year classes In terms of survival/exploitation rates, run limes, sex ratios and homing patterns.
The Delphi fish produced consistently lower overall returns than the Burrishoole groups, but consistently much higher numbers of early-running multi-sea-winter (MSW) salmon. These MSW salmon were predominantly female, while Delphi grilse were predominantly male. The Corrib fish performed relatively poorly. The smaller MSW salmon component of the non-indigenous groups ran later in the season than their Delphi counterparts.
Important size differences in adult returns were noted and related to stock, sex, husbandry and selection by interceptory fisheries. It is suggested that the MSW salmon component of Delphi stocks is attributable to genetic factors, possibly linked to low freshwater temperature regimes.
The programme has contributed to an increase in estuarine droll netting. Exploitation of grilse by all forms of coastal net ranged from 56% to 87%. Exploitation of MSW salmon by nets was lower, ranging from 0% to 54%, the lowest rates being achieved by the early-running Delphi MSW salmon.
The programme is expensive and cannot be justified in terms of direct angling revenue. But when related accommodation income is taken into account, the financial results and the sustainment of the fishery's capital value broadly justify the programme to date
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