Winter condition and proximate composition of anadromous arctic charr (Salvelinus alpinus) in eastern Ungava Bay, Quebec

1990 ◽  
Vol 68 (11) ◽  
pp. 2284-2289 ◽  
Author(s):  
Thomas G. Boivin ◽  
G. Power
Keyword(s):  
Proximate Composition ◽  
Condition Factor ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Liver Lipid ◽  
Composition Analysis ◽  
Liver Protein ◽  
Muscle Lipid ◽  
Winter Condition ◽  
Anadromous Arctic Charr

Arctic charr (Salvelinus alpinus) were sampled during the winter of 1985–1986 in the Kangiqsualujjuaq area of northern Quebec to examine feeding patterns and temporal variation in condition. No feeding was observed at any time during the winter, and examination of gallbladder coloration indicated that feeding had not occurred for a long period of time. Proximate composition analysis of nonreproductive charr from Koroc River indicated that liver and muscle lipid and liver protein reserves changed during the winter fast, and this was most pronounced in early winter. Spent charr sampled at Lake Tasikallak had lower liver lipid and condition factor values and were more depleted than nonreproductive charr. Despite a reduction in lipids and protein during winter, the general condition of nonreproductive charr renders them suitable for commercial sale at any time of the year.

Genetic architecture of body weight, condition factor and age of sexual maturation in Icelandic Arctic charr (Salvelinus alpinus)

2011 ◽  
Vol 286 (1) ◽  
pp. 67-79 ◽  
Author(s):  
Eva Küttner ◽  
Hooman K. Moghadam ◽  
Skúli Skúlason ◽  
Roy G. Danzmann ◽  
Moira M. Ferguson
Keyword(s):  
Body Weight ◽  
Sexual Maturation ◽  
Genetic Architecture ◽  
Condition Factor ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Weight Condition

PCB disruption of the hypothalamus-pituitary-interrenal axis involves brain glucocorticoid receptor downregulation in anadromous Arctic charr

2004 ◽  
Vol 287 (4) ◽  
pp. R787-R793 ◽  
Author(s):  
Neelakanteswar Aluru ◽  
Even H. Jorgensen ◽  
Alec G. Maule ◽  
Mathilakath M. Vijayan
Keyword(s):  
Glucocorticoid Receptor ◽  
Plasma Cortisol ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Production Capacity ◽  
Heat Shock Protein 90 ◽  
Aroclor 1254 ◽  
Anadromous Arctic Charr ◽  
Cortisol Levels

We examined whether brain glucocorticoid receptor (GR) modulation by polychlorinated biphenyls (PCBs) was involved in the abnormal cortisol response to stress seen in anadromous Arctic charr ( Salvelinus alpinus). Fish treated with Aroclor 1254 (0, 1, 10, and 100 mg/kg body mass) were maintained for 5 mo without feeding in the winter to mimic their seasonal fasting cycle, whereas a fed group with 0 and 100 mg/kg Aroclor was maintained for comparison. Fasting elevated plasma cortisol levels and brain GR content but depressed heat shock protein 90 (hsp90) and interrenal cortisol production capacity. Exposure of fasted fish to Aroclor 1254 resulted in a dose-dependent increase in brain total PCB content. This accumulation in fish with high PCB dose was threefold higher in fasted fish compared with fed fish. PCBs depressed plasma cortisol levels but did not affect in vitro interrenal cortisol production capacity in fasted charr. At high PCB dose, the brain GR content was significantly lower in the fasted fish and this corresponded with a lower brain hsp70 and hsp90 content. The elevation of plasma cortisol levels and upregulation of brain GR content may be an important adaptation to extended fasting in anadromous Arctic charr, and this response was disrupted by PCBs. Taken together, the hypothalamus-pituitary-interrenal axis is a target for PCB impact during winter emaciation in anadromous Arctic charr.

scholarly journals 1H NMR-Based Metabolomics and Lipid Analyses Revealed the Effect of Dietary Replacement of Microbial Extracts or Mussel Meal with Fish Meal to Arctic Charr (Salvelinus alpinus)

Fishes ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 46 ◽  
Author(s):  
Wagner ◽  
Gómez-Requeni ◽  
Moazzami ◽  
Lundh ◽  
Vidakovic ◽  
...  
Keyword(s):  
1H Nmr ◽  
Lipid Content ◽  
Fish Meal ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Liver Lipid ◽  
Muscle Metabolism ◽  
Baker’S Yeast ◽  
Baker's Yeast ◽  
Metabolic Fingerprint

The effects of replacing 40% of dietary fish meal (FM) in a reference diet (REF) with either mussel meal (MM), zygomycete fungi (ZYG), extracted baker’s yeast (EY), or non-extracted baker’s yeast (NY) on the lipid and metabolic profile of Arctic charr (Salvelinus alpinus) were investigated. After a 14-week feeding trial, liver and muscle tissues were collected for lipid (lipid content, lipid class, fatty acid composition) and 1H NMR-based metabolomics analyses (aqueous and chloroform phases). Lipid analyses showed that fish fed ZYG diet had lower liver lipid content and thereby 10% higher level of docosahexaenoic acid compared with REF. Metabolomics analyses showed that on the one hand fish fed NY diet affected liver metabolites (2–3 fold higher concentrations of e.g., n,n-dimethylglycine and betaine) compared with REF, while, on the other hand, the muscle metabolic fingerprint was mainly affected by EY. In general, affected metabolites (e.g., alanine, anserine, betaine, hydroxyproline, isoleucine, malonate, n,n-dimethylglycine, proline, succinate, and valine) in fish fed test diets suggested that the test meal ingredients caused mainly a response in muscle metabolism. Fish metabolism was least affected by MM, which suggests that it may be suitable to replace fish meal in Arctic charr diets.

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