The partitioning of oxygen uptake from air and from ...
|Title||The partitioning of oxygen uptake from air and from water by Erythinids|
|Author(s)||E. Don Stevens, G. F. Holeton|
|Journal||Canadian Journal of Zoology / Revue Canadienne De Zoologie|
|Abstract||Oxygen uptake from air and from water was measured during routine activity at 2TC in two faculta~iveair-breathing teleosts, iioplrrytl~rinus14 niraenintus and Etyrhrinlrs ~pt1trinsr.v.These fish brearhe air in hypuxic water. lsking a breath every I to 2 min. Gill ventilation increases in hypoxic water if air breathing is prevenred. but decreases if air breathing is permitted. Avemge oxygenuptake from water is 105rng.h-I -kg-' and 69mg.h-a kg-' from air Tor Hflpletytiirinr~s6;5 mg. h-1 -kg-' From water and 51 mg. h-'. kg-' From alr for Emrhrinus. In normoxic water Hop- I~ryrhrint~oshtainfrom0Lo56%ofoxygenuptake(mean31%) Fromair.TwoHopleryrhrinus survived in air for 24 hand did nnt have an elevated oxygenuptake when put hack into water.|
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