Oxygen consumption and nitrogen excretion in mullet,Rhinomugil corsula (Hamilton), with special reference to swimming speed

1979 ◽  
Vol 88 (5) ◽  
pp. 345-351 ◽  
Author(s):  
N Sukumaran ◽  
M N Kutty
Keyword(s):  
Oxygen Consumption ◽  
Special Reference ◽  
Swimming Speed ◽  
Nitrogen Excretion ◽  
Rhinomugil Corsula

Impact of Diet on Metabolism and Swimming Performance in Juvenile Lake Trout, Salvelinus namaycush

1989 ◽  
Vol 46 (3) ◽  
pp. 384-388 ◽  
Author(s):  
F. W. H. Beamish ◽  
J. C. Howlett ◽  
T. E. Medland
Keyword(s):  
Oxygen Consumption ◽  
Swimming Speed ◽  
Lake Trout ◽  
Swimming Performance ◽  
Salvelinus Namaycush ◽  
Feeding Trial ◽  
Direct Association ◽  
Feeding Trials ◽  
Velocity Increments ◽  
Isocaloric Diets

Juvenile lake trout, Salvelinus namaycush, of similar size were fed one of three isocaloric diets, each differing in protein and lipid content. Oxygen consumption and swimming performance were measured in a recirculating water flume at intervals throughout the 70-d feeding trials (10 °C). Swimming speed was increased by stepwise velocity increments (5 cm∙s−1) and oxygen consumption was measured at each velocity between 20 and 45 cm∙s−1. Oxygen consumption for a given speed did not differ significantly throughout the feeding trial nor among the diets implying a similarity in the quality and quantity of substrate catabolized for energy. Basal metabolism (0 cm∙s−1) was also independent of diet and feeding interval. Critical swimming speed increased with dietary and carcass protein content to suggest a direct association with muscle mass and number of myofilaments.

The Organic Metabolism of Sea-water with Special Reference to the Ultimate Food Cycle in the Sea

1935 ◽  
Vol 20 (2) ◽  
pp. 181-196 ◽  
Author(s):  
Ancel Keys ◽  
E. H. Christensen ◽  
August Krogh
Keyword(s):  
Oxygen Consumption ◽  
Special Reference ◽  
Oxygen Content ◽  
Sea Water ◽  
Raw Water

Studies are reported of the behaviour of stored sea-water with regard to oxygen, ammonia, and bacteria content in relation to the conditions of storage and to the effect of various filtration procedures.When sea-water is sterilised by filtration and stored in the dark, the oxygen content remains constant or diminishes only by less than 0·07c.c. per litre in several hundred hours.In non-sterile experiments there is always an oxygen consumption roughly parallel to a bacterial multiplication which begins very suddenly after collection of the water. These effects are greatest in “raw” water, less in paper-filtered water and least in water which is doubly filtered.

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