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Kaufmann 1990 JEB

From Bioblast
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Kaufmann R (1990) Respiratory cost of swimming in larval and juvenile cyprinids. J. Exp. Biol. 150: 343-366.

ยป J. Exp. Biol. 150: 343-366.

Kaufmann R (1990) J. Exp. Biol.

Abstract: The relationship between swimming speed and respiration rate for larvae and juveniles (1.5-600 mg fresh mass) of two cyprinid species, Chalcalburnus chalcoides and Rutilus rutilus, was measured in a flow-tunnel at 20ยฐC.

1. A special tunnel respirometer with small volume and fast response had to be constructed to cope with the methodological difficulties encountered with the larvae.

2. The oxygen uptake increased quadratically with swimming speed if the oxygen debt incurred at the highest speeds was included in the calculations. The maximum speeds sustainable over 2min were 6-8 lengths s- 1 ; the critical speed marking the onset of anaerobic processes was only 10-15 % lower. Energetics and performance were similar for both species. The cost of transport was much higher for larvae and juveniles than for adult fish and decreased rapidly during growth.

3. Standard and routine metabolic rates scaled with an allometry of M-0.23, active rates with M-0.15, where M is body mass in grams. In the smallest larvae, however, the standard rates were nearly independent of body mass. Their active rates of 80 ยตmolO2.h-1g-1 fresh mass were twice as high as those of adults.

4. The scope for activity was high on an absolute scale, but not when expressed as factorial scope, since the standard rate was also high. For the same reason, routine activity accounted for less than 25 % of the energy budget, despite the high cost of transport.

5. The data are discussed with respect to the changing swimming pattern during ontogeny, the shift from cutaneous to branchial respiration and the metabolic processes involved. โ€ข Keywords: Twin-Flow


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Organism: Fish"Fish" is not in the list (Human, Pig, Mouse, Rat, Guinea pig, Bovines, Horse, Dog, Rabbit, Cat, ...) of allowed values for the "Mammal and model" property. 

Preparation: Intact Organism"Intact Organism" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property. 

Regulation: Respiration; OXPHOS; ETS Capacity"Respiration; OXPHOS; ETS Capacity" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property.