Diurnal rhythm in the rates of oxygen consumption, locomotor and feeding activity of yearling atlantic salmon (Salmo salar) under various light conditions

1964 ◽  
Vol 60 (4) ◽  
pp. 249-263
Author(s):  
M. A. Ali
Keyword(s):  
Oxygen Consumption ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Diurnal Rhythm ◽  
Feeding Activity ◽  
Light Conditions ◽  
Atlantic Salmon Salmo Salar

Hourly and total oxygen consumption by ova of Atlantic salmon, Salmo salar L., during embryogenesis, at two temperatures and three levels of dissolved oxygen

1979 ◽  
Vol 57 (6) ◽  
pp. 1196-1200 ◽  
Author(s):  
T. Hamor ◽  
E. T. Garside
Keyword(s):  
Oxygen Consumption ◽  
Atlantic Salmon ◽  
Oxygen Uptake ◽  
Dissolved Oxygen ◽  
Salmo Salar ◽  
Developmental Time ◽  
Total Oxygen ◽  
Weighted Mean ◽  
Atlantic Salmon Salmo Salar ◽  
Two Temperatures

Weighted mean hourly rates of oxygen consumption in embryonated ova of Atlantic salmon, Salmo salar L., during embryogenesis, were reduced significantly by levels of dissolved oxygen below air saturation and by a temperature of 5 °C, relative to those for ova incubated at 10 °C. Total oxygen consumption during embryogenesis also was reduced significantly by the lower levels of dissolved oxygen, but not by temperature. The decrease in the pace of embryogenesis in the lots of ova at 5 °C extended the developmental time so that the lower rate of oxygen uptake was offset. Thus, within each level of dissolved oxygen there was no appreciable difference in the products of time units and units of oxygen uptake. At 5 °C, 100% air saturation, mean hourly uptake was 0.0141 mg O2/ovum, and total uptake was 28.153 mg O2/ovum. At 10 °C, 100% air saturation, these values were 0.0270 mg O2/ovum, and 27.974 mg O2/ovum, respectively. Values for ova incubated at 50 and 30% air saturation were correspondingly lower.

Activity, Respiration, and Excretion of Ammonia by Atlantic Salmon (Salmo salar) Smolt and Postsmolt

1989 ◽  
Vol 46 (5) ◽  
pp. 790-795 ◽  
Author(s):  
A. J. Wiggs ◽  
E. B. Henderson ◽  
R. L. Saunders ◽  
M. N. Kutty
Keyword(s):  
Oxygen Consumption ◽  
Atlantic Salmon ◽  
Spontaneous Activity ◽  
Salmo Salar ◽  
Condition Factor ◽  
Ammonia Excretion ◽  
Initial Increase ◽  
Atlantic Salmon Salmo Salar ◽  
Substantial Change ◽  
Increased Activity

Spontaneous activity, oxygen consumption, and excretion of ammonia by juvenile Atlantic salmon (Salmo salar) were measured over 17 wk as the appearance of the fish changed from early smolt to smolt and then postsmolt. A substantial change in routine oxygen consumption from 66 to 148 mL∙kg−1∙h−1 was primarily correlated with the increase in activity. An initial increase in ammonia excretion from about 5 to about 14 mL∙kg−1∙h−1 was largely correlated with the decline in condition factor from 0.99 to 0.79 suggesting that increased metabolic needs caused by the increased activity were not being met by the amount of food ingested. This is supported by the secondary increase in condition factor (C.F. = 0.93) and decrease in ammonia excretion (to about 7 mg∙kg−1∙h−1) that occurred after the meal size was increased.

Water flow requirements in the intensive production of Atlantic salmon (Salmo salar L.) fry: growth and oxygen consumption

1999 ◽  
Vol 20 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Sveinung Fivelstad ◽  
Asbjørn Bergheim ◽  
Hilde Kløften ◽  
Reidun Haugen ◽  
Torild Lohne ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Atlantic Salmon ◽  
Water Flow ◽  
Salmo Salar ◽  
Atlantic Salmon Salmo Salar ◽  
Intensive Production

Phenotypic plasticity in physiological status at emergence from nests as a response to temperature in Atlantic salmon (Salmo salar)

2011 ◽  
Vol 68 (8) ◽  
pp. 1470-1479 ◽  
Author(s):  
Helge Skoglund ◽  
Sigurd Einum ◽  
Torbjørn Forseth ◽  
Bjørn Torgeir Barlaup
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Incubation Temperature ◽  
Feeding Activity ◽  
Energy Levels ◽  
Large Body ◽  
Physiological Status ◽  
Cold Temperatures ◽  
Atlantic Salmon Salmo Salar ◽  
Response To Temperature

Successful transitions from relying on yolk to exogenous feeding may be strongly influenced by temperature conditions experienced both during embryonic development, through effects on juvenile phenotype, and during initiation of feeding. Here we simultaneously assess these two effects of temperature treatments (2, 5, 8, and 12 °C) in Atlantic salmon ( Salmo salar ). Fry emerging from low incubation temperatures were smaller and had metabolized more energy prior to emergence, but had larger yolk sacs and higher mass specific energy levels, than those experiencing higher temperatures. After emergence, activity, feeding, and growth increased significantly with increasing temperature, but fry were able to initiate feeding and maintain positive growth at all four temperatures. Larger energy stores may provide an advantage when emerging at cold temperatures with a low potential for feeding activity, whereas having a large body size, which is primarily of importance in competitive interactions, may be less important owing to cryptic feeding and sheltering at low temperatures. However, the adaptive significance of the observed phenotypic response to incubation temperature remains untested.

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