Journal of Comparative Physiology B

, Volume 155, Issue 4, pp 437–444

Embryonic nutrition, growth and energetics inZoarces viviparus L. as indication of a maternal-fetal trophic relationship

  • Bodil Korsgaard
  • Frede Østergaard Andersen
Article
  • 38 Downloads

Summary

The embryos ofZoarces viviparus (L.) show linear growth during their intraovarian development. In early gestation before hatching, the embryos take up very small amounts of low molecular tracer compounds such as glucose, glycine or taurine. Later in gestation (two months after hatching), the embryos accumulate substantial amounts of the tracer compounds. The uptake rates of the tracer compounds in vitro are correlated with ambient concentrations of unlabelled compounds within the natural concentration range of the ovarian fluid. The highest uptake rates are found for glucose and the lowest for taurine. Release of14CO2 and dissolved organic carbon (DO14C) from assimilated tracers in the embryos is low. Oxygen uptake and body weight of the embryos appear to be linearly correlated, and the average oxygen uptake is 4.20 (SD 0.73) μmol O2 g−1 h−1 WW at 11°C. The contribution of glucose respiration to total aerobic respiration is 13.9%. A growth to respiration ratio of 0.91 indicates a relatively high efficiency for converting food to growth.

Symbols and abbreviations

DW

dry weight

WW

wet weight

DO14C

dissolved organic carbon (14C-labelled)

t1/2

half life time

τ

turnover time (replacement time)

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References

  1. Brett JR (1972) The metabolic demand for oxygen in fish, particularly salmonids, and a comparison with other vertebrates. Respir Physiol 14:151–170Google Scholar
  2. Brett JR, Groves TDD (1979) Physiological energetics. In: Hoar WS, Randal DJ, Brett JR (ed) Fish physiology, vol VIII. Bioenergetics and growth. Academic Press, New York, pp 279–352Google Scholar
  3. Constanz GD (1980) Energetics of viviparity in the gila topmin-now (Pisces: Poecilidae). Copeia 4:876–878Google Scholar
  4. Cowey CB, Adron JW, Brown DA, Shanks AM (1975) Studies on the nutrition of marine flatfish. The metabolism of glucose by plaice (Pleuronectes platessa) and the effect of dietary energy source on protein utilization in plaice. Br J Nutr 33:219–231Google Scholar
  5. Cowey CB, Sargent JR (1979) Nutrition. In: Hoar WS, Randall DJ, Brett JR (ed) Fish physiology, vol VIII. Bioenergetics and growth. Academic Press, New York, pp 1–69Google Scholar
  6. Depeche J (1976) Acquisition et limites de l'autonomie trophique embryonnaire au cours du developpement du poisson téléostéen viviparePoecilia reticulata. Bull Biol Fr Belg 110:45–97Google Scholar
  7. deVlaming V, Baltz D, Anderson S, Fitzgerald R, Delahunty G, Barkley M (1983) Aspects of embryo nutrition and excretion among viviparous embiotocid teleosts: Potential endocrine involvements. Comp Biochem Physiol A 76:189–198Google Scholar
  8. Hogarth J (1976) Viviparity. Biology Series, no 75. Edward Arnold, LondonGoogle Scholar
  9. Korsgaard B (1982) Changes in activity levels of glutamate dehydrogenase and two transaminases of maternal liver during reproduction and after administration of estradiol and progesterone inZoarces viviparus (L). J Fish Biol 20:445–454Google Scholar
  10. Korsgaard B (1983) The chemical composition of follicular and ovarian fluids of the pregnant blennyZoarces viviparus (L). Can J Zool Vol 61:1101–1108Google Scholar
  11. Kristoffersen R, Broberg S, Pekkarinen M (1973) Histology and physiology of embryotrophe formation, embryonic nutrition and growth in the eel-poutZoarces viviparus (L). Ann Zool Fenn 10:467–477Google Scholar
  12. Rao GMM (1968) Oxygen consumption of rainbow trout (Salmo gairdneri) in relation to activity and salinity. Can J Zool 46:781–786Google Scholar
  13. Terner C (1968) Studies on metabolism in embryonic development. I. The oxidative metabolism of unfertilized and embryonated eggs of the rainbow trout. Comp Biochem Physiol 24:993–940Google Scholar
  14. Veith WJ (1980) Viviparity and embryonic adaptations in the teleostClinus superciliosus. Can J Zool 58:1–12Google Scholar
  15. Wourms JP (1981) Viviparity. The maternal-fetal relationship in fishes. Am Zool 21:473–517Google Scholar

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • Bodil Korsgaard
    • 1
  • Frede Østergaard Andersen
    • 1
  1. 1.Institute of BiologyOdense UniversityOdense MDenmark

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