scholarly journals Effects of short‐term starvation periods on flesh quality in Arctic charr ( Salvelinus alpinus) in different seasons

2020 ◽  
Vol 51 (10) ◽  
pp. 4022-4029 ◽  
Author(s):  
Albert Kjartan Dagbjartarson Imsland ◽  
Bjørn Roth ◽  
Line Bach Christensen ◽  
Sten Ivar Siikavuopio ◽  
Atle Foss
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Short Term ◽  
Flesh Quality ◽  
Different Seasons

Seasonal and temperature effects on the adrenergic responses of Arctic charr (Salvelinus alpinus) erythrocytes

1999 ◽  
Vol 202 (16) ◽  
pp. 2233-2238 ◽  
Author(s):  
T. Lecklin ◽  
M. Nikinmaa
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Seasonal Effect ◽  
Adrenergic Stimulation ◽  
Maximal Increase ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Adrenergic Response ◽  
Different Temperatures ◽  
Different Seasons ◽  
Cellular Water

In the present study, we have examined the adrenergic responses of Arctic charr (Salvelinus alpinus) erythrocytes acclimated to different temperatures (2, 8 and 14 degrees C) during different seasons. We measured the changes in cellular water and ion contents after noradrenaline stimulation using different noradrenaline concentrations and external pH values. Furthermore, the effects of acute temperature changes on the magnitude of the adrenergic response were studied. The adrenergic response of Arctic charr erythrocytes showed pronounced seasonal variation. The [Na(+)]/[Cl(−)] accumulation ratio after adrenergic stimulation was greatest in May, indicating an enhanced activity of the Na(+)/H(+) exchanger. The noradrenaline-induced change in [Na(+)](i) was greatest in spring. In addition to a seasonal effect, the exchanger seemed to be most active in erythrocytes from charr acclimated to low temperature (2 degrees C) early in May: the EC(50) value was lower and the calculated maximal increase in [Na(+)](i) was greater in the 2 degrees C-acclimated group than in the other acclimation groups. In contrast, acclimation to different temperatures did not affect these responses (measured at a constant temperature) in February. An acute temperature change has a smaller effect on the adrenergic response of Arctic charr erythrocytes than on rainbow trout (Oncorhynchus mykiss) erythrocytes.

Effect of rearing temperature on flesh quality in Arctic charr ( Salvelinus alpinus )

2020 ◽  
Author(s):  
Albert K. D. Imsland ◽  
Aðalheiður Ólafsdóttir ◽  
Jón Árnason ◽  
Arnþór Gústavsson ◽  
Helgi Thorarensen ◽  
...  
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Flesh Quality ◽  
Rearing Temperature

Impaired Swimming Performance of Acid-exposed Arctic Charr, Salvelinus Alpinus L.

1988 ◽  
Vol 23 (2) ◽  
pp. 301-307 ◽  
Author(s):  
L.A. Hunter ◽  
E. Scherer
Keyword(s):  
Dose Response ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Swimming Performance ◽  
Control Level ◽  
Ventilation Rates

Abstract Arctic charr (Salvelinus alpinus L.) were exposed to five levels of acidity between pH 6 and pH 3.8. Swimming performance as determined by critical swimming speeds was 67.5 cm · sࢤ1 or 4.4 body lengths per second for untreated fish (pH 7.8). Performance declined sharply below pH 4.5; at pH 3.8 it was reduced by 35% after 7 days of exposure. Tailbeat frequencies and ventilation rates showed no dose-response effects. At swimming speeds between 20 and 50 cm · sࢤ1, ventilation rates at all levels of acidity were higher than at the control level.

scholarly journals A seasonal comparison of trace metal concentrations in the tissues of Arctic charr (Salvelinus alpinus) in Northern Québec, Canada

Ecotoxicology ◽  
2020 ◽  
Vol 29 (9) ◽  
pp. 1327-1346
Author(s):  
Mackenzie Anne Clifford Martyniuk ◽  
Patrice Couture ◽  
Lilian Tran ◽  
Laurie Beaupré ◽  
Nastassia Urien ◽  
...  
Keyword(s):  
Trace Metal ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Metal Concentrations

scholarly journals Genotyping Strategies Using ddRAD Sequencing in Farmed Arctic Charr (Salvelinus alpinus)

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 899
Author(s):  
Fotis Pappas ◽  
Christos Palaiokostas
Keyword(s):  
Genetic Diversity ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Cost Effective ◽  
Limiting Factors ◽  
Phenotypic Traits ◽  
Production Volume ◽  
High Coverage ◽  
Genomic Relationships ◽  
Low Coverage

Incorporation of genomic technologies into fish breeding programs is a modern reality, promising substantial advances regarding the accuracy of selection, monitoring the genetic diversity and pedigree record verification. Single nucleotide polymorphism (SNP) arrays are the most commonly used genomic tool, but the investments required make them unsustainable for emerging species, such as Arctic charr (Salvelinus alpinus), where production volume is low. The requirement to genotype a large number of animals for breeding practices necessitates cost effective genotyping approaches. In the current study, we used double digest restriction site-associated DNA (ddRAD) sequencing of either high or low coverage to genotype Arctic charr from the Swedish national breeding program and performed analytical procedures to assess their utility in a range of tasks. SNPs were identified and used for deciphering the genetic structure of the studied population, estimating genomic relationships and implementing an association study for growth-related traits. Missing information and underestimation of heterozygosity in the low coverage set were limiting factors in genetic diversity and genomic relationship analyses, where high coverage performed notably better. On the other hand, the high coverage dataset proved to be valuable when it comes to identifying loci that are associated with phenotypic traits of interest. In general, both genotyping strategies offer sustainable alternatives to hybridization-based genotyping platforms and show potential for applications in aquaculture selective breeding.

Effects of soybean and sunflower meals on the growth, feed utilization, and gene expression in two Canadian strains of juvenile Arctic charr (Salvelinus alpinus)

Aquaculture ◽  
2017 ◽  
Vol 481 ◽  
pp. 191-201 ◽  
Author(s):  
Amanda A. Smith ◽  
André Dumas ◽  
Rodrigue Yossa ◽  
Kenneth E. Overturf ◽  
Dominique P. Bureau
Keyword(s):  
Gene Expression ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Feed Utilization
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