Size‐dependent stress response in juvenile Arctic charr ( Salvelinus alpinus ) under prolonged predator conditioning

2019 ◽  
Vol 50 (5) ◽  
pp. 1482-1490 ◽  
Author(s):  
Raine Kortet ◽  
Mika V. M. Laakkonen ◽  
Jouni Tikkanen ◽  
Anssi Vainikka ◽  
Heikki Hirvonen
Keyword(s):  
Stress Response ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Size Dependent

scholarly journals Experimental evidence for paternal effects on offspring growth rate in Arctic charr ( Salvelinus alpinus )

2008 ◽  
Vol 276 (1654) ◽  
pp. 129-136 ◽  
Author(s):  
Eirik Mack Eilertsen ◽  
Bård-Jørgen Bårdsen ◽  
Ståle Liljedal ◽  
Geir Rudolfsen ◽  
Ivar Folstad
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Good Genes ◽  
Offspring Size ◽  
Paternal Effects ◽  
Size Dependent ◽  
Positive Effects ◽  
Sexual Selection Theory ◽  
Fitness Benefits

Sexual selection theory predicts that females should choose males that signal viability and quality. However, few studies have found fitness benefits among females mating with highly ornamented males. Here, we use Arctic charr ( Salvelinus alpinus ), a teleost fish with no parental care, to investigate whether females could gain fitness benefits by mating with highly ornamented and large-sized males. Carotenoid-based coloration signalled by males during spawning is believed to be an indicator of good genes for this species. Paternal effects on offspring size (body length and dry body mass) were examined experimentally by crossing eggs and sperm in vitro from 12 females and 24 males in a split-brood design and raising larvae to 30 days past hatching. We clearly demonstrated that there was a relationship between offspring size and paternal coloration. However, a negative interaction between paternal length and coloration was evident for offspring length, indicating that positive effects of paternal coloration were only present for smaller males. Thus, the red spawning coloration of the male Arctic charr seems to be an indicator of good genes, but the effect of paternal coloration on offspring length, an indicator of ‘offspring quality’, is size dependent.

scholarly journals Proof of concept: Visual categorization of carotenoid pigmentation in Arctic charr ( Salvelinus alpinus L) can predict stress response

2020 ◽  
Author(s):  
Tobias Backström ◽  
Eva Brännäs ◽  
Jan Nilsson ◽  
Hanna Carlberg ◽  
Kajsa Johansson ◽  
...  
Keyword(s):  
Stress Response ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Proof Of Concept ◽  
Visual Categorization ◽  
Carotenoid Pigmentation

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

Effects of the sea louse Lepeophtheirus salmonis on temporal changes in cortisol, sex steroids, growth and reproductive investment in Arctic charr Salvelinus alpinus

2010 ◽  
Vol 76 (10) ◽  
pp. 2318-2341 ◽  
Author(s):  
H. Tveiten ◽  
P. A. Bjørn ◽  
H. K. Johnsen ◽  
B. Finstad ◽  
R. S. McKinley
Keyword(s):  
Sex Steroids ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Reproductive Investment ◽  
Temporal Changes ◽  
Lepeophtheirus Salmonis
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