scholarly journals Development of an accurate model to predict the phenology of Atlantic salmon smolt spring migration

2020 ◽  
Vol 30 (8) ◽  
pp. 1552-1565 ◽  
Author(s):  
Nils Teichert ◽  
Jean‐Philippe Benitez ◽  
Arnaud Dierckx ◽  
Stéphane Tétard ◽  
Eric Oliveira ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Spring Migration ◽  
Accurate Model ◽  
Salmon Smolt

The “n−3 LC-PUFA sparing effect” of modified dietary n−3 LC-PUFA content and DHA to EPA ratio in Atlantic salmon smolt

Aquaculture ◽  
2012 ◽  
Vol 356-357 ◽  
pp. 135-140 ◽  
Author(s):  
Basseer M. Codabaccus ◽  
Chris G. Carter ◽  
Andrew R. Bridle ◽  
Peter D. Nichols
Keyword(s):  
Atlantic Salmon ◽  
Pufa Content ◽  
Sparing Effect ◽  
Salmon Smolt

scholarly journals Bayesian arrival model for Atlantic salmon smolt counts powered by environmental covariates and expert knowledge

2020 ◽  
Vol 77 (3) ◽  
pp. 462-474
Author(s):  
Henni Pulkkinen ◽  
Panu Orell ◽  
Jaakko Erkinaro ◽  
Samu Mäntyniemi
Keyword(s):  
Atlantic Salmon ◽  
Expert Knowledge ◽  
Predictive Performance ◽  
Monitoring Site ◽  
Model Framework ◽  
Environmental Covariates ◽  
Video Footage ◽  
Monitoring Survey ◽  
Salmon Smolt ◽  
Good Predictive Performance

Annual run size and timing of Atlantic salmon (Salmo salar) smolt migration was estimated using Bayesian model framework and data from 6 years of a video monitoring survey. The model has a modular structure. It separates subprocesses of departing, traveling, and observing, of which the first two together define the arrival distribution. The subprocesses utilize biological background and expert knowledge about the migratory behavior of smolts and about the probability to observe them from the video footage under varying environmental conditions. Daily mean temperature and discharge were used as environmental covariates. The model framework does not require assuming a simple distributional shape for the arrival dynamics and thus also allows for multimodal arrival distributions. Results indicate that 20%–43% of smolts passed the Utsjoki monitoring site unobserved during the years of study. Predictive studies were made to estimate daily run size in cases with missing counts either at the beginning or in the middle of the run, indicating good predictive performance.

scholarly journals Consumption of Atlantic Salmon Smolt by Striped Bass: A Review of the Predator–Prey Encounter and Implications for the Design of Effective Sampling Strategies

Fishes ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 50
Author(s):  
Andrews ◽  
Hirtle ◽  
Linnansaari ◽  
Curry
Keyword(s):  
Atlantic Salmon ◽  
Striped Bass ◽  
Species Interactions ◽  
Morone Saxatilis ◽  
Sampling Strategies ◽  
Native Range ◽  
Spawning Period ◽  
Predator Prey ◽  
Salmon Smolt ◽  
Future Management

The native striped bass (Morone saxatilis) population of the Miramichi River, New Brunswick is undergoing an unprecedented recovery while Atlantic salmon (Salmo salar) numbers within that system continue to decline. Atlantic salmon smolt depart from the Miramichi system during the striped bass spawning period and it is hypothesized that elevated striped bass abundances will increase encounter rates and predation on smolts. We summarize all available striped bass diet studies occurring within the native range of Atlantic salmon and present a review of the feeding behavior and diet preferences of striped bass before, during, and after their spawning period. The key studies vary in methodologies and interpretability. We present a standardized approach for assessing striped bass predation threats and smolt vulnerability and thus an improved understanding of the species interactions to guide future management in the Miramichi River.

THE BIO-ECONOMIC IMPACT OF IMPROVING FISH WELFARE USING DEMAND FEEDERS IN SCOTTISH ATLANTIC SALMON SMOLT PRODUCTION

2012 ◽  
Vol 16 (4) ◽  
pp. 384-398 ◽  
Author(s):  
Lyndsey A. E. Stewart ◽  
Sunil Kadri ◽  
Chris Noble ◽  
Markus Kankainen ◽  
Jari Setälä ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Economic Impact ◽  
Fish Welfare ◽  
Salmon Smolt

Potential for dispersal of Gyrodactylus salaris (Platyhelminthes, Monogenea) by sea-running stages of the Atlantic salmon (Salmo salar): field and laboratory studies

1998 ◽  
Vol 55 (2) ◽  
pp. 507-514 ◽  
Author(s):  
Arnulf Soleng ◽  
Tor A Bakke ◽  
Lars P Hansen
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
River Mouth ◽  
Infected Fish ◽  
Surface Salinity ◽  
Wild Salmon ◽  
Atlantic Salmon Salmo Salar ◽  
Water Dispersal ◽  
Salmon Parr ◽  
Salmon Smolt

Population growth of Gyrodactylus salaris increased exponentially on Atlantic salmon (Salmo salar) smolts in laboratory experiments conducted at 12.0°C. Furthermore, G. salaris was transmitted successfully from salmon smolt to parr at 0.0, 7.5, 10.0, and 20.0%° salinity and reproduced in fresh water after direct transfer from 7.5%° (16 days), 20.0%° (4 and 8 h), and 33.0%° (5, 15, and 30 min). No G. salaris were observed on salmon parr exposed to 33.0%° for 60 min. The prevalence of G. salaris on wild salmon smolts caught approximately 25 km from the river mouth in the Drammensfjord (surface salinity 2.0-3.5%°) was 71.2% compared with 88.0% on those from the neighbouring River Lierelva. Adult wild salmon caught as prespawners, spawners, and postspawners (kelts) in the River Drammenselva were infected with G. salaris. The prevalence and abundance increased from autumn to spring, in contrast with earlier studies on salmon parr, demonstrating the possible importance of adult salmon as reservoirs for G. salaris during winter. The results support the hypothesis of brackish water dispersal of G. salaris by infected salmonids migrating in estuaries and fjords. The use of salt as a disinfectant against G. salaris in hatcheries, and the stocking of possibly infected fish into brackish and seawater, should also be reexamined.

scholarly journals Effects of mining chemicals on fish: exposure to tailings containing Lilaflot D817M induces CYP1A transcription in Atlantic salmon smolt

2015 ◽  
Vol 8 (1) ◽  
Author(s):  
Pål A. Olsvik ◽  
Henning A. Urke ◽  
Tom O. Nilsen ◽  
John B. Ulvund ◽  
Torstein Kristensen
Keyword(s):  
Atlantic Salmon ◽  
Fish Exposure ◽  
Salmon Smolt
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