Hostname: page-component-55f67697df-jr75m Total loading time: 0 Render date: 2025-05-11T13:24:16.299Z Has data issue: false hasContentIssue false
  • English
  • Français

Endocrine Aspects of Salmonid Culture*

Published online by Cambridge University Press:  05 December 2011

T. H. Simpson
T. H. Simpson
Affiliation:
Marine Laboratory, Aberdeen.
Get access

Synopsis

Administration, by dietary supplement, of ethylestrenol to rainbow trout and to salmon parr results in significant increases in growth rate; further treatment of smolts retained in fresh water reduces the growth rate. Treated parr develop into 1 + smolts in significantly lower proportion than controls, but have a higher condition factor.

Stress induces in rainbow trout long-lasting reductions in plasma thyroxine levels and increases in serum cortisol concentrations. The origin and significance of these changes is discussed.

The administration of 17β-oestradiol at 20 mg/kg of food for the first 30 days of feeding causes sex-reversal of male salmonids. Treatment with 17α-methyltestosterone at 3 mg/kg food for 90 days following first-feeding causes sex-reversal of female salmonids.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 75 , Issue 4: Fish Farming: Scientific and Technical Aspects , 1976 , pp. 241 - 252
Copyright
Copyright © Royal Society of Edinburgh 1976

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

Ashby, K. R., 1957. The effect of steroid hormones on the brown trout (Salmo trutta, L.) during the period of gonadal differentiation. J. Embryol. Exp. Morph., 5, 225–249.Google Scholar
Bidner, T. D., Merkel, R. A., Miller, E. R., UllreyD, E. D, E. and Hoefer, J. A., 1972. The effect of diethylstilbestrol plus methyltestosterone and dietary protein level on swine performance and composition. J. Anim. Sci., 34, 397–402.CrossRefGoogle Scholar
Brown-Grant, K., 1966. The control of TSH secretion. In The Pituitary Gland, 2. Ed. Harris, G. W. and Donovan., B. J.London: Butterworths, 235–269.Google Scholar
Bulkley, R. V., 1972. Diethylstilbestrol in catfish feed. Trans. Am. Fish. Soc, 101, 537–539.Google Scholar
Chavin, W., 1956. Thyroid distribution and function in the goldfish Carassius auratus L. J. Exp. Zool., 153, 259–279.CrossRefGoogle Scholar
Chavin, W., 1973. Teleostean endocrine and paraendocrine alterations of utility in environmental studies, 199–239. In Responses of Fish to Environmental Changes. Ed. Chavin, W.. Springfield: Thomas.Google Scholar
Fagerlund, U. H. M. and McBride, J. R., 1973. The use of 17α-methyltestosterone for promoting weight increases in juvenile Pacific salmon. J. Fish. Res. Bd Can., 30, 1099–1104.Google Scholar
Jalabert, B., Billard, R. and Chevassus, B., 1975. Preliminary experiments on sex control in trout: production of sterile fishes and simultaneous self-fertilisable hermaphrodites. Ann. Biol. Anim. Bioch. Biophys., 15, 19–28.Google Scholar
Krüskemper, H. L., 1968. In Anabolic Steroids, 167. London: Academic Press.Google Scholar
Minaur, J., 1973. Smolt rearing at Almondbank, Perthshire. J. Inst. Fish. Mgmt, 4, 65–68.Google Scholar
Oppenheimer, J. H., 1968. Role of plasma proteins in the binding distribution and metabolism of the thyroid hormones. New Engl. J. Med., 278, 1153–1162.CrossRefGoogle ScholarPubMed
Osborn, R. H. and Simpson, T. H., 1974. The effect of stress and food deprivation on the thyroidal status of plaice and of rainbow trout. Cons. Perm. Int. Explor. Mer CM 1974 Gear and Behaviour Comm., B9.Google Scholar
Padoa, E., 1937. Diferentziazone e inversione sessuale (feminizzazione) di avanoto di Trota (Salmon irideus.) trattati con ormone follicolaire. Monitore Zool. Ital., 48, 195–203.Google Scholar
Purdom, C. E., 1969. Radiation induced gynogenesis and androgenesis in fish. Heredity, 24,431–444.CrossRefGoogle ScholarPubMed
Rasquin, R. and Atz, E. H., 1952. The effects of ACTH and cortisone on the pituitary, thyroid and gonads of the teleost Astyanax mexicanus. Zoologica, N. Y., 37, 77–87.Google Scholar
Simpson, T. H., Wright, R. S. and Fraser, M. H., 1974. Some observations on the use of anabolic steroids in the culture of salmonid fish. Cons. Perm. Int. Explor. Mer CM 1974 Anadr. and Catadr. Comm., M20.Google Scholar
Stanley, R. G., 1976. Female homogamety in grass carp (Ctenopharyngodon idella) determined by gynogenesis. J. Fish. Res. Bd Can., 33, 1372–1374.CrossRefGoogle Scholar
Yamamoto, T., 1953. Artificially induced sex reversal in genotypic males of the medaka (Oryzias latipes). J. Exp. Zool., 123, 571–594.CrossRefGoogle Scholar
Yamamoto, T., 1958. Artificial induction of functional sex reversal in genotypic females of the medaka (Oryzias latipes). J. Exp. Zool., 137, 227–262.Google Scholar
Yamamoto, T., 1959. A further study of functional sex reversal in genotypic males of the medaka (Oryzias latipes) and the progenies of sex reversal. Genetics, 44, 739–757.CrossRefGoogle ScholarPubMed