Table IV
Normal Values of Blood Gas Tensions Sampled from Free Swimming Unrestrained Species of Air-Breathing Fishes
Afferent blood
Efferent blood
Systemic
aerial organ
aerial organ
venous
Systemic
(pulmonary
(pulmonary
blood
arterial blood
artery)
vein)
Temperature
Species
P o 2 PcOn
Poz %sat. Pco,
Po2
Pco,
P o z PcoI
("C)
Reference
Lepidosiren
- -
31.5 80
-
10.0
-
48-50 90
18-20
Johansen and Lenfant (1967)
Neoceratadus
14.3 6 . 5
38.9 95
3.60
38.9
3.6
36.3 3 . 8
20
Lenfant el al. (1966)
Pratopterus
2
-
27.0 78 25.7
19.9
25.5
39.8 21.7
20
Lenfant and Johansen (1968)
Electrophsrus
- -
20.8 70 27.7
20.8
27.7
-
-
25-28
Johansen et al. (1968)
Lepidosiren
- -
38.0 86 22
28
-
69
-
2.7-28
Lenfant et a / . (1970)
-
-
-
-
2.7-28
Lenfant et a/. (1970)
Synibranchus
- -
22
90 29
Proloptertcs
- -
36
-
-
-
-
-
-
25
Lahiri el al. (1968)
Electrophorus
-
-
13
50 29.0
-
-
-
-
-
Garey and ltshn (1968)
H
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M
::
3
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