358
CHESTER JONES, CHAN, HENDERSON, AND BALL
B. Corpuscles of Stannius and Osmoregulation
Rasquin (1956) first reported histological changes in the corpuscles
of Stannius in response to changes in the salinity of the environmental
water, It was found that prolonged immersion of Astyanax mexicanus in
1% sodium chloride solution caused a marked loss of phosphatid granules
from the cells of the corpuscles. Intraperitoneal injection of potassium
chloride had similar histological effects. Other histological data have
shown that in seawater eels the nuclei are larger and the cells have characteristic signs of increased activity, which may be only transient
(Olivereau, 1964; Hanke and Chester Jones, 1966; Hanke et al., 1967).
Removal of the corpuscles of Stannius from freshwater Sicyases
sanguineus resulted in the development of edema, hyponatremia, and
eventual death in about 1 week (Vargas and Concha, 1957). In the freshwater eel, Anguilla anguilla, this operation was followed by a decline in
plasma sodium and a rise in potassium and calcium concentrations
(Fontaine, 1964; Leloup-Hatey, 1964b; Chester Jones et al., 1965b). Inorganic phosphate concentration decreased (Fontaine, 1967; D. K. 0.
Table VII
Changes in Total Inulin Space and Intramuscular Sulfate Space
in the Freshwater or Seawater Eel Following Removal of
Corpuscles of Stannius or AdrenalectomyaGroup
Inulin space
n
(% body weight)
Freshwater yellow eels
Controls
10
Adrenalectomized
3
Corpuscles of Stannius removed
9
15.2 f 0.8
15.0 f 0.2
11.9 f 0 . P
Group
Sulfate spaced
n
(yo muscle water)
Freshwater eels
Sham operated
5
6 . 6 f 0.4
Adrenalectomized
5
5.3 f 0 . 6
Corpuscles of Stannius removed
5
3.5 f 0.4c
Controls
9
10.7 f 0.46
Adrenalectomized
4
5 . 9 f 1.9c
Corpuscles of Stannius removed
4
10.07 f 0.75
Seawater silver eels
~~
0 From D. K. 0. Chan el al. (1967b, 1969).
bMeans f S.E.
c p = <0.05 compared to control group.
d Parietal muscle.
CHESTER JONES, CHAN, HENDERSON, AND BALL
B. Corpuscles of Stannius and Osmoregulation
Rasquin (1956) first reported histological changes in the corpuscles
of Stannius in response to changes in the salinity of the environmental
water, It was found that prolonged immersion of Astyanax mexicanus in
1% sodium chloride solution caused a marked loss of phosphatid granules
from the cells of the corpuscles. Intraperitoneal injection of potassium
chloride had similar histological effects. Other histological data have
shown that in seawater eels the nuclei are larger and the cells have characteristic signs of increased activity, which may be only transient
(Olivereau, 1964; Hanke and Chester Jones, 1966; Hanke et al., 1967).
Removal of the corpuscles of Stannius from freshwater Sicyases
sanguineus resulted in the development of edema, hyponatremia, and
eventual death in about 1 week (Vargas and Concha, 1957). In the freshwater eel, Anguilla anguilla, this operation was followed by a decline in
plasma sodium and a rise in potassium and calcium concentrations
(Fontaine, 1964; Leloup-Hatey, 1964b; Chester Jones et al., 1965b). Inorganic phosphate concentration decreased (Fontaine, 1967; D. K. 0.
Table VII
Changes in Total Inulin Space and Intramuscular Sulfate Space
in the Freshwater or Seawater Eel Following Removal of
Corpuscles of Stannius or AdrenalectomyaGroup
Inulin space
n
(% body weight)
Freshwater yellow eels
Controls
10
Adrenalectomized
3
Corpuscles of Stannius removed
9
15.2 f 0.8
15.0 f 0.2
11.9 f 0 . P
Group
Sulfate spaced
n
(yo muscle water)
Freshwater eels
Sham operated
5
6 . 6 f 0.4
Adrenalectomized
5
5.3 f 0 . 6
Corpuscles of Stannius removed
5
3.5 f 0.4c
Controls
9
10.7 f 0.46
Adrenalectomized
4
5 . 9 f 1.9c
Corpuscles of Stannius removed
4
10.07 f 0.75
Seawater silver eels
~~
0 From D. K. 0. Chan el al. (1967b, 1969).
bMeans f S.E.
c p = <0.05 compared to control group.
d Parietal muscle.