Climate change and anadromous fish: How does thermal acclimation affect the mechanics of the myotomal muscle of the Atlantic salmon, Salmo salar ?

2021 ◽  
Author(s):  
Kathleen A. Hittle ◽  
Elizabeth S. Kwon ◽  
David J. Coughlin
Keyword(s):  
Climate Change ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Thermal Acclimation ◽  
Anadromous Fish ◽  
Atlantic Salmon Salmo Salar ◽  
Myotomal Muscle

Thermal Acclimation and Temperature Selection in Atlantic Salmon, Salmo salar, and Rainbow Trout, S. gairdneri

1967 ◽  
Vol 24 (7) ◽  
pp. 1507-1513 ◽  
Author(s):  
M. Yaqub Javaid ◽  
John M. Anderson
Keyword(s):  
Rainbow Trout ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Thermal Acclimation ◽  
Acclimation Temperature ◽  
Horizontal Gradient ◽  
Temperature Selection ◽  
Marked Influence ◽  
Atlantic Salmon Salmo Salar

The selected temperature for Atlantic salmon and rainbow trout, as determined in a horizontal gradient, increases with acclimation temperature over the acclimation range 5–20 C for salmon and 10–20 C for trout. The final preferendum for salmon is about 17 C. The results for rainbow trout suggest that the type of gradient used, i.e. vertical or horizontal, has a marked influence on the experimentally determined relation between acclimation temperature and selected temperature.

Predicting climate change effects on subarctic–Arctic populations of Atlantic salmon (Salmo salar)

2013 ◽  
Vol 70 (2) ◽  
pp. 159-168 ◽  
Author(s):  
Richard D. Hedger ◽  
Line E. Sundt-Hansen ◽  
Torbjørn Forseth ◽  
Ola Ugedal ◽  
Ola H. Diserud ◽  
...  
Keyword(s):  
Climate Change ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Climate Models ◽  
Global Climate Models ◽  
Future Climate ◽  
The Arctic ◽  
Future Climate Change ◽  
Northern Norway ◽  
Atlantic Salmon Salmo Salar

We predict an increase in parr recruitment and smolt production of Atlantic salmon (Salmo salar) populations along a climate gradient from the subarctic to the Arctic in western and northern Norway in response to future climate change. Firstly, we predicted local stream temperature and discharge from downscaled data obtained from Global Climate Models. Then, we developed a spatially explicit individual-based model (IBM) parameterized for the freshwater stage, with combinations of three different postsmolt survival probabilities reflecting different marine survival regimes. The IBM was run for three locations: southern Norway (∼59°N), western Norway (∼62°N), and northern Norway (∼70°N). Increased temperatures under the future climate regimes resulted in faster parr growth, earlier smolting, and elevated smolt production in the western and northern locations, in turn leading to increased egg deposition and elevated recruitment into parr. In the southern location, density-dependent mortality of parr resulting from low summer wetted-areas reduced predicted future smolt production in comparison to the other locations. It can be inferred, therefore, that climate change may have both positive and negative effects on anadromous fish abundance within the subarctic–Arctic according to geographical region.

Effect of DDT on Temperature Selection by Young Atlantic Salmon, Salmo salar

1965 ◽  
Vol 22 (2) ◽  
pp. 503-512 ◽  
Author(s):  
D. M. Ogilvie ◽  
J. M. Anderson
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Cold Water ◽  
Thermal Acclimation ◽  
Low Doses ◽  
Temperature Selection ◽  
Atlantic Salmon Salmo Salar ◽  
Lethal Limit ◽  
Sublethal Doses ◽  
Higher Doses

Exposure of Atlantic salmon underyearlings for 24 hr to sublethal doses of DDT, ranging from 5 to 50 ppb, resulted in changes in the selected temperature. Low doses produced a downwards shift in the selected temperature whereas higher doses produced an upwards shift. The DDT effect appeared to be more marked for warm-acclimated fish (17 °C) than for cold-acclimated ones (8 °C). In addition exposure of warm-acclimated fish to 10 ppb DDT or more appeared to make them extremely sensitive to cold water and there was some evidence to suggest that the lower lethal limit may have been raised. It is suggested that DDT may interfere with the normal thermal acclimation mechanism.

scholarly journals Maturation in Atlantic salmon (Salmo salar, Salmonidae): a synthesis of ecological, genetic, and molecular processes

2020 ◽  
Author(s):  
Kenyon Mobley ◽  
Tutku Aykanat ◽  
Yann Czorlich ◽  
Andrew House ◽  
Johanna Kurko ◽  
...  
Keyword(s):  
Climate Change ◽  
Life History ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Economic Value ◽  
Life History Strategies ◽  
Atlantic Salmon Salmo Salar ◽  
Current State ◽  
Genomic Studies ◽  
Diversity Of Life

Over the past decades, Atlantic salmon (Salmo salar, Salmonidae) has emerged as a model system for sexual maturation research, owing to the high diversity of life history strategies, knowledge of trait genetic architecture, and their high economic value. The aim of this synthesis is to summarize the current state of knowledge concerning maturation in Atlantic salmon, outline knowledge gaps, and provide a roadmap for future work. Our summary of the current state of knowledge: 1) maturation in Atlantic salmon takes place over the entire life cycle, starting as early as embryo development, 2) variation in the timing of maturation promotes diversity in life history strategies, 3) ecological and genetic factors influence maturation, 4) maturation processes are sex-specific and may have fitness consequences for each sex, 5) genomic studies have identified large-effect loci that influence maturation, 6) the brain-pituitary-gonadal axis regulates molecular and physiological processes of maturation, 7) maturation is a key component of fisheries, aquaculture, conservation, and management, and 8) climate change, fishing pressure, and other anthropogenic stressors likely have major effects on salmon maturation. In the future, maturation research should focus on a broader diversity of life history stages, including early embryonic development, the marine phase and return migration. We recommend studies combining ecological and genetic approaches will help disentangle their relative contributions to maturation. Functional validation of large-effect loci should reveal how these genes influence maturation. Finally, continued research in maturation will improve our predictions concerning how salmon may adapt to fisheries, climate change, and other future challenges.

Origin and life history of Atlantic salmon (Salmo salar) near their northernmost oceanic limit

2014 ◽  
Vol 71 (11) ◽  
pp. 1740-1746 ◽  
Author(s):  
Arne J. Jensen ◽  
Sten Karlsson ◽  
Peder Fiske ◽  
Lars Petter Hansen ◽  
Gunnel M. Østborg ◽  
...  
Keyword(s):  
Climate Change ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
The Arctic ◽  
Genetic Assignment ◽  
Atlantic Salmon Salmo Salar ◽  
The Arctic Ocean ◽  
History Of ◽  
Genetic Profiles ◽  
Rule Out

138 Atlantic salmon (Salmo salar) captured in the Advent Fjord off Svalbard were genetically assigned to two main clusters of European salmon. Two-thirds were assigned to salmon rivers in Finnmark (the northernmost county in Norway) and the rest to salmon rivers further south in Norway. The genetic assignment was based on genetic profiles from 60 Norwegian rivers. The two clusters correspond to two larger genetic groupings: the Barents–White seas and Atlantic groupings. Thus, we cannot rule out other populations from these groupings as sources of Atlantic salmon at Svalbard. Svalbard salmon assigned to the two genetic groupings differed in ecological and phenological traits, with highest smolt age and lowest postsmolt growth in the Finnmark salmon cluster. High smolt ages in both groups, however, suggest a northern origin of most individuals in the sample. Although Atlantic salmon have sporadically been observed in the Arctic Ocean at earlier times, the high abundance outlined here seems to be a recent phenomenon, suggesting a northward penetration caused by climate change.

Microstructure and texture of fresh and smoked Atlantic salmon, Salmo salar L., fillets from fish reared and slaughtered under different conditions

2001 ◽  
Vol 32 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Sjofn Sigurgisladottir ◽  
Margret S. Sigurdardottir ◽  
Helga Ingvarsdottir ◽  
Ole J. Torrissen ◽  
Hannes Hafsteinsson
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Atlantic Salmon Salmo Salar
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