Effect of cortisol on testis of freshwater fish Notopterus notopterus (Pallas).
Indian J Exp Biol
;
2000 Dec; 38(12): 1227-30
Article
in English
| IMSEAR
| ID: sea-58489
ABSTRACT
Cortisol (20, 40 and 60 micrograms/fish for 10 days) treatment caused an increase in testicular-somatic index (TSI) in immature N. notopterus whereas in mature fish no change from that of controls was observed. Histology of testis indicated that spermatogenetic activity was activated in immature fish while it was inhibited in mature fish. Testicular cholesterol exhibited a similar response. The results indicate that cortisol inhibits spermatogenesis during mature phase while it promotes spermatogenesis during immature phase of the reproductive cycle in N. notopterus.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Organ Size
/
Spermatogenesis
/
Testis
/
Male
/
Hydrocortisone
/
Cholesterol
/
Fishes
/
Animals
Language:
English
Journal:
Indian J Exp Biol
Year:
2000
Type:
Article
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