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Institution

Atlantic Salmon Federation

About: Atlantic Salmon Federation is a based out in . It is known for research contribution in the topics: Salmo & Population. The organization has 50 authors who have published 59 publications receiving 2088 citations.


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Journal ArticleDOI
TL;DR: In this study pressure shock techniques were employed to produce triploid Atlantic salmon on a commercial scale, and performance differences between triploids and diploids were assessed.

86 citations

Journal ArticleDOI
TL;DR: It is concluded that escaped farmed salmon are sufficiently prevalent in eastern North American rivers to pose a potentially serious risk to the persistence of wild salmon populations, especially in those rivers that are adjacent to existing aquaculture sites.
Abstract: Knowledge of the prevalence of escaped farmed fishes in the wild is an essential first step to assessing the risk resulting from interactions between farmed and wild fishes. This is especially important in eastern North America, where Atlantic salmon (Salmo salar) aquaculture occurs near wild Atlantic salmon rivers and where many wild salmon popula- tions are severely depressed. Here, we review the literature on the incidence of escaped farmed salmon in eastern North American rivers, for which there has been no comprehensive compilation to date. Escaped farmed salmon have been found in 54 of 62 (87%) rivers investigated within a 300 km radius of the aquaculture industry since 1984, including 11 rivers that contain endangered salmon populations. Averaged among all investigations, the proportional representation of farmed salmon among adults entering the rivers from the sea was 9.2% (range 0% to 100%). Where data were sufficient to exam- ine temporal trends, farmed salmon proportions varied considerably over time, suggesting that escape events are episodic in nature. We conclude that escaped farmed salmon are sufficiently prevalent in eastern North American rivers to pose a potentially serious risk to the persistence of wild salmon populations, especially in those rivers that are adjacent to existing aquaculture sites.

68 citations

Journal ArticleDOI
TL;DR: Hedger et al. as mentioned in this paper used a weighted-mean estimator to estimate the positions and speeds of three paths made through a dense array of fixed acoustic receivers within a coastal embayment (Gaspe Bay, Quebec, Canada).
Abstract: Hedger, R. D., Martin, F., Dodson, J, J., Hatin, D., Caron, F., and Whoriskey, F. G. 2008. The optimized interpolation of fish positions and speeds in an array of fixed acoustic receivers. - ICES Journal of Marine Science, 65: 1248-1259.The principal method for interpolating the positions and speeds of tagged fish within an array of fixed acoustic receivers is the weighted-mean method, which uses a box-kernel estimator, one of the simplest smoothing options available. This study aimed to determine the relative error of alternative, non-parametric regression methods for estimating these parameters. It was achieved by predicting the positions and speeds of three paths made through a dense array of fixed acoustic receivers within a coastal embayment (Gaspe Bay, Quebec, Canada) by a boat with a GPS trailing an ultrasonic transmitter. Transmitter positions and speeds were estimated from the receiver data using kernel estimators, with box and normal kernels and the kernel size determined arbitrarily, and by several non-parametric methods, i.e. a kernel estimator, a smoothing spline, and local polynomial regression, with the kernel size or smoothing span determined by cross-validation. Prediction error of the kernel estimator was highly dependent upon kernel size, and a normal kernel produced less error than the box kernel. Of the methods using cross-validation, local polynomial regression produced least error, suggesting it as the optimal method for interpolation. Prediction error was also strongly dependent on array density. The local polynomial regression method was used to determine the movement patterns of a sample of tagged Atlantic salmon (Salmo salar) smolt and kelt, and American eel (Anguilla rostrata). Analysis of the estimates from local polynomial regression suggested that this was a suitable method for monitoring patterns of fish movement.

65 citations

Journal ArticleDOI
TL;DR: For example, the authors found that between 3-18% of fishers admitted to poaching within the past year, and poaching activities were often concentrated at certain times (holidays) and in specific places (poaching hotspots).
Abstract: Effective conservation depends upon people's compliance with regulations, yet non-compliance (eg poaching) is often the rule rather than the exception. Poaching is often clandestine and socially undesirable, requiring specialized, multidisciplinary approaches for assessment and management. We estimated poaching by recreational fishers in no-fishing reserves of Australia's Great Barrier Reef Marine Park (GBRMP) by conducting social surveys and quantifying derelict (lost or discarded) fishing gear. Our study revealed that (1)between 3-18% of fishers admitted to poaching within the past year, (2) poaching activities were often concentrated at certain times (holidays) and in specific places (poaching hotspots), and (3) fishers' primary motivations to poach were the perception of higher catches in reserves and a low probability of detection. Our results suggest that extolling certain ecological benefits of marine reserves where enforcement capacity is low could lead to the perverse outcome of encouraging non-compliance. Our combined social-ecological approach revealed that even in an iconic marine park such as the GBRMP, poaching levels are higher than previously assumed, which has implications for effective management.

64 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20215
20205
20196
20181
20175
20163