Influence of experimental set‐up and methodology for measurements of metabolic rates and critical swimming speed in Atlantic salmon Salmo salar

Standard metabolic rates (SMRs) for Atlantic salmon (Salmo salar) have been calculated independently for different life stages and populations, but the absence of a comprehensive SMR model limits its application for modelling the energy use or life stage-specific growth. Atlantic salmon respiration data were compiled from a meta-analysis of 26 publications, and exponential or optimal relationships were fitted to the metadata to estimate respiration equation parameters and generate confidence intervals dependent on temperature and body mass. While model parameters were significant for both models, mass-corrected standard metabolic rates (g O2·day−1) increased as a function of water temperature (°C) and decreased beyond ∼16 °C following an optimal relationship (AICoptimal = –9185.50 versus AICexponential = –8948.95; ΔAIC = 236.55). Juvenile Atlantic salmon growth (cohorts 1 and 2) from bioenergetics simulations did not vary between Little Southwest Miramichi and Northwest Miramichi rivers; however, variation between simulations using the different respiration models (i.e., exponential versus optimal) led to differences in the way fish allocate energy throughout the year. Results from this analysis will inform conservation efforts for the species throughout its current range and predict the energetic requirements at juvenile life stages.

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Observations on the seaward migration of Atlantic salmon (Salmo salar L.) smolts through a large lake as determined by radiotelemetry and Carlin tagging studies

Canadian Journal of Zoology ◽

10.1139/z88-101 ◽

1988 ◽

Vol 66 (3) ◽

pp. 685-691 ◽

Cited By ~ 14

Author(s):

C. E. Bourgeois ◽

M. F. O'Connell

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

Swimming Speed ◽

Large Lake ◽

Atlantic Salmon Salmo Salar ◽

Seaward Migration ◽

The Hours

Seaward movements of Atlantic salmon (Salmo salar L.) smolts through Red Indian Lake were studied using radiotelemetry and Carlin tagging. Movements of smolts through the lake occurred between the hours of 20:00 and 04:30 as determined from radiotelemetry. Carlin tagging revealed a net swimming speed ranging from 1.8 to 15.6 km/day; radiotelemetry revealed a rate of <1.0 to 11.2 km/day. Smolt movement through Red Indian Lake and other large insular Newfoundland lakes might be achieved through active migration as opposed to passive displacement. This aspect is discussed in the context of insular Newfoundland stocks for which extensive use of lakes by juveniles for rearing has been demonstrated.

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Juvenile Atlantic Salmon (Salmo salar ) with relatively high standard metabolic rates have small metabolic scopes

Functional Ecology ◽

10.1046/j.0269-8463.2001.00603.x ◽

2002 ◽

Vol 16 (1) ◽

pp. 73-78 ◽

Cited By ~ 85

Author(s):

C. J. Cutts ◽

N. B. Metcalfe ◽

A. C. Taylor

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

High Standard ◽

Metabolic Rates ◽

Atlantic Salmon Salmo Salar ◽

Juvenile Atlantic Salmon

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Drifters versus residents: assessing size and age differences in Atlantic salmon (Salmo salar) fry

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f03-162 ◽

2004 ◽

Vol 61 (2) ◽

pp. 273-282 ◽

Cited By ~ 39

Author(s):

Valérie Bujold ◽

Richard A Cunjak ◽

Jason P Dietrich ◽

David A Courtemanche

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

Driving Forces ◽

Active Movement ◽

Atlantic Salmon Salmo Salar ◽

Salmon Fry ◽

Riverine Habitat ◽

Life History Patterns ◽

Young Of The Year ◽

Set Up

Some young-of-the-year Atlantic salmon (Salmo salar) have a tendency to drift soon after emergence from the gravel, whereas others, called resident fry, set up and defend territories. Little is known about the mechanisms regulating this strong tendency to drift soon after emergence, a phenomenon that can greatly influence survival within a population. This study was carried out in the Western Brook system, Gros Morne National Park, Newfoundland, Canada. The objective was to assess differences, through biometric characteristics, between drifting and resident Atlantic salmon fry by examining both groups of fish caught simultaneously in the same riverine habitat. Resident salmon fry can be up to 4.8% longer and 20.4% heavier compared with drifting fry of similar age (measured in days since emergence). Therefore, it seems that competition, more than prior residence effect, could be part of the driving forces behind this active movement and that differences between subpopulations of Atlantic salmon fry can have major repercussions on life history patterns.

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