scholarly journals A brain and a head for a different habitat: Size variation in four morphs of Arctic charr ( Salvelinus alpinus (L.)) in a deep oligotrophic lake

2020 ◽  
Vol 10 (20) ◽  
pp. 11335-11351
Author(s):  
Ana‐Maria Peris Tamayo ◽  
Olivier Devineau ◽  
Kim Præbel ◽  
Kimmo K. Kahilainen ◽  
Kjartan Østbye
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Size Variation ◽  
Oligotrophic Lake ◽  
Habitat Size

Hatchery Growth of Pure Strains and Intraspecific Hybrids of Juvenile Arctic Charr, Salvelinus alpinus (Canadian × Norwegian Charr)

1991 ◽  
Vol 48 (6) ◽  
pp. 1109-1116 ◽  
Author(s):  
B. G. E. de March
Keyword(s):  
Growth Parameters ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Size Variation ◽  
Large Size ◽  
Maternal Characteristic ◽  
Coefficients Of Variation ◽  
Sib Families ◽  
The Mean ◽  
Intraspecific Hybrids

Growth parameters of 36 tank populations representing 23 full-sib families of Nauyuk and Norwegian Arctic charr (Salvelinus alpinus) and both reciprocal hybrids were determined for 1 yr. Hatching success of families was a maternal characteristic. Mean weights of families at 30 d after swim-up were related to maternal effects as well as the general and specific combining abilities of the two strains, with the weight contribution of the Nauyuk parent(s) larger than that of the Norwegian. At 125 d after swim-up, the mean weights and coefficients of variation (CVs) in the four types of crosses were Nauyuk dam × Nauyuk sire, 2.05 g ± 20%; Nauyuk dam × Norwegian sire, 2.10 g ± 24%; Norwegian dam × Nauyuk sire, 1.91 g ± 26%; and Norwegian dam × Norwegian sire, 1.71 g ± 31%. After 125 d, the Nauyuk dam × Norwegian sire families showed superior growth, while the Norwegian dam × Nauyuk sire families grew slowly and developed large size variation. At 325 d, reciprocal effects were evident, and mean weights and CVs were Nauyuk dam × Nauyuk sire, 36 g ± 45%; Nauyuk dam × Norwegian sire, 43 g ± 48%; Norwegian dam × Nauyuk sire, 30 g ± 68%; and Norwegian dam × Norwegian sire, 38 g ± 36%. The largest individual fish in the experiment were hybrids.

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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