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Evolutionary perspectives of free amino acids and yolk protein hydrolysis during egg and yolk-sac larval development in salmonids
Thomsen, T.; Finn, R.N.; Rukan, K.; Evjen, M.S.; Fyhn, H.J. (2000). Evolutionary perspectives of free amino acids and yolk protein hydrolysis during egg and yolk-sac larval development in salmonids, in: Norberg, B. et al. (Ed.) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. pp. 186
In: Norberg, B. et al. (2000). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish, 6. Department of Fisheries and Marine Biology, University of Bergen: Bergen. ISBN 82-7461-048-2. 499 pp., meer
In: International Symposium on the Reproductive Physiology of Fish. Museo Nacional de Ciencias Naturales. , meer
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  • Thomsen, T.
  • Finn, R.N.
  • Rukan, K.
  • Evjen, M.S.
  • Fyhn, H.J.
Abstract
    A yolk protein of about similar to 105 kDa is hydrolysed in correlation with the build up of a free amino acid pool during egg and yolksac larval development of five salmonid species. The timing and the quantities involved in these changes vary between the species. Thus, compared to the situation in extant marine teleosts with pelagic eggs, the basis seems to exist for the evolution of an adaptative mechanism that allowed teleosts to spread from freshwater to seawater some 100 million years ago.
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