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On levels of calcium and of vitamin A aldehyde in the blood of arctic cod

Published online by Cambridge University Press:  11 May 2009

P. M. J. Woodhead  and
P. A. Plack
P. M. J. Woodhead
Affiliation:
Fisheries Laboratory, Lowestoft
P. A. Plack
Affiliation:
Unit for Biochemical Research bearing on Fisheries Problems, National Institute for Research in Dairying, Shinfield, Reading Grant aided by the Development Fund.
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Extract

Cod (Gadus morhua L.) from the Arcto-Norwegian stock were caught during their gonadal maturation cycle, and plasma samples from individual fish obtained for the determination of total calcium and vitamin A aldehyde (retinal + dehydroretinal). The concentrations of these two substances in the plasma of female cod caught during January–March were significantly correlated r = 0·728, P < 0·001, and this result supports the hypothesis that the increases in concentrations of plasma calcium and vitamin A aldehyde during the period of ovarian maturation may be controlled by the same mechanism. In September, just prior to ovarian maturation, and in October, at the beginning of maturation, there was no correlation between the concentrations of the two substances.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 48 , Issue 1 , February 1968 , pp. 93 - 96
Copyright
Copyright © Marine Biological Association of the United Kingdom 1968

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References

REFERENCES

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Woodhead, A. D. & Woodhead, P. M. J., 1965. Seasonal changes in the physiology of the Barents Sea cod, Gadus morhua L., in relation to its environment. I. Endocrine changes particularly affecting migration and maturation. ICNAF Spec. Publ. 6, pp. 692–716.Google Scholar
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