Blood oxygen transport and acid-base status of stressed trout (Salmo gairdnerii): Pre- and postbranchial values in winter fish

1986 ◽  
Vol 84 (2) ◽  
pp. 391-396 ◽  
Author(s):  
Mikko Nikinmaa ◽  
Frank B. Jensen
Keyword(s):  
Oxygen Transport ◽  
Blood Oxygen ◽  
Acid Base ◽  
Acid Base Status

Seasonal changes in blood oxygen transport and acid–base status in the tegu lizard, Tupinambis merianae

2004 ◽  
Vol 140 (2) ◽  
pp. 197-208 ◽  
Author(s):  
Denis V. Andrade ◽  
Simone P. Brito ◽  
Luı́s Felipe Toledo ◽  
Augusto S. Abe
Keyword(s):  
Oxygen Transport ◽  
Seasonal Changes ◽  
Blood Oxygen ◽  
Acid Base ◽  
Acid Base Status ◽  
Tupinambis Merianae ◽  
Tegu Lizard

Acid-base changes in the fetal lamb before and after lung expansion

1963 ◽  
Vol 18 (5) ◽  
pp. 877-880 ◽  
Author(s):  
N. S. Assali ◽  
W. A. Manson ◽  
L. W. Holm ◽  
M. Ross
Keyword(s):  
Blood Oxygen ◽  
Acid Base ◽  
Blood Ph ◽  
Lung Expansion ◽  
Fetal Lamb ◽  
Before And After ◽  
The Status ◽  
Acid Base Status ◽  
Near Term ◽  
Fetal Acidosis

The acid-base status of the fetal lamb was studied in near-term pregnant ewes subjected to spinal anesthesia. The status of the fetus was compared to its mother and the changes which occur after the fetal lungs were ventilated with oxygen or nitrogen were investigated. The results show that: 1) the fetus in utero is in a state of metabolic acidosis in relation to the mother, 2) the acidosis does not seem to be related to the fetal blood pCO2, and 3) the acidosis may be aggravated by hypoxia. fetal acidosis; blood pH; blood oxygen; blood carbon dioxide; hypoxia; hyperoxia; sheep Submitted on March 20, 1963

Haemolymph oxygen transport and acid-base status in Glyptonotus antarcticus Eights

Polar Biology ◽  
1997 ◽  
Vol 18 (1) ◽  
pp. 10-15 ◽  
Author(s):  
N. M. Whiteley ◽  
E. W. Taylor ◽  
A. Clarke ◽  
A. J. El Haj
Keyword(s):  
Oxygen Transport ◽  
Acid Base ◽  
Acid Base Status

Control and coordination of gas transfer in fishes

1989 ◽  
Vol 67 (12) ◽  
pp. 2961-2970 ◽  
Author(s):  
Steve F. Perry ◽  
Chris M. Wood
Keyword(s):  
Blood Cell ◽  
Oxygen Content ◽  
Red Blood Cell ◽  
Carrying Capacity ◽  
Blood Cells ◽  
Gas Transfer ◽  
Blood Oxygen ◽  
Acid Base ◽  
Acid Base Status ◽  
Periods Of Stress

Recent developments pertaining to the control and coordination of gas transfer in fishes have been reviewed. Gill ventilatory water flow can markedly affect blood respiratory and blood acid–base status. Although arterial oxygen content traditionally has been considered the predominant factor controlling ventilation, we present evidence for additional involvement of both blood acid–base status and circulating catecholamines. An analysis of the independent effects of blood oxygen content, acid–base status, and catecholamines in controlling ventilation is confounded by the interrelationships among these variables. It is likely, however, that each factor is involved to some extent in ventilatory control in fishes. Blood oxygen transport is affected by the carrying capacity of the blood and red blood cell chemical status. Blood oxygen-carrying capacity is increased during periods of stress by adrenergic release of red blood cells from the spleen. Concurrently, adrenergic stimulation of red blood cell Na+–H+ exchange, reduction of intracellular nucleoside triphosphates, swelling of red blood cells, and respiratory alkalosis all tend to increase oxygen affinity and capacity of hemoglobin. Results of recent in vivo studies indicate that adrenergic inhibition of plasma bicarbonate dehydration may contribute to the respiratory acidosis after exhaustive exercise in fishes. Evidence is presented to show that hypoxemia, rather than blood acidosis per se, is the proximate stimulus for catecholamine mobilization during periods of stress in fishes.

Sign in / Sign up

Export Citation Format

Share Document