Table 7.10 Effects of adren ocordicosteroids on sodium metbolism of fish
Kidneys
Gills
Corticosteroid
O steichthyes
Carassius auratus
FW
Gain- or
(1) Aldosterone
(Goldfish)
loss"
(2) Deoxycorticosterone
Anguilla anguilla 3 , ( , 5
FW 0':'
Gain or
Gain aldosterone or
(Eel)
loss
cortisol small dose
SW
Loss
Cortisol
Salmo gairdneri 8
FW Retention
Loss
Cortisol
(Rainbow trout salt-loaded)
(slight)
Agnatha
Lam petra {luviatilis 7
FW
0
Gain
Ald oster one
(River lamprey)
0
0
Cortisol
*0 = no change
lFAvRE (1960); 2SEXTON (1955); 3CHESTER JONES et al. (1962 b); (HENDERSON and CHESTER
JONES (1967); 5MAYER et al. (1967) ; 8HoLMES (195Sij; 7BENTLEY and FOLLETT (1962; 1963).
Table 7.11 Effects of hypophysectomy on sodium metabolism in various teleost fish
in f resh water
Sodium loss
Site of effect
Replacement hormone
Fundulus heteroclitus!
(Killifish)
Fundulus kansaet
(Plains killifish)
Poecilia latipinna 3
Tilapia m ossambica'
Carassius aura tus 5
(Goldfish)
Anguilla anguilla 6
(Eel)
+
+
+
+
+
+
G ills
Kidney
Gills
Gills
Prolactin
Prolactin and ACTH
not effective
Prolactin
Prolactin partl y
Prolactin partly
P rolactin partly but
ACTH more effective
Note: SCHREIBMAN and KALLMAN (1966) also found four species of hypophysectomized plattyfish (Xipbophorus sp.) died in fresh water but could be maintained with prolactin.
References: lBuRDEN (1956); PICKFORD and PHILLIPS (1959) ; POTTS and EVANS (1966); MAETZ
et al. (1967 b); 2STANLEY and FLEMING (1966 a, b; 1967 a, b) ; 3BALL and OLIVER EAU (1964);
BALL and ENSOR (1967) ; ENSOR and BALL (1968 b); (DHARMAMBA et al. (1967 ); 5LAHLOU and
SAWYER (1969); 8BuTLER (1966); OLIVEREAU and CHARTIER-BARADUC (1966); MAETZ et al.
(1967 a); CHAN, CHESTER JONES, and MOSELEY (1968).
224