Biochemical Studies on Marine Zooplankton X.The Amino Acid Composition of Euphausia Superb a, Meganyctiphanes Norvegica and Neomysis Integer

The amino acid composition has been investigated in two euphausiids, Euphausia superba Dana and Meganyctiphanes norvegica (M. Sars), and one mysid, Neomysis integer Leach. Protein-bound amino acids show a very considerable degree of similarity: glutamic acid, aspartic acid, lysine, leucine and argin...

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Bibliographic Details
Published in:Journal of the Marine Biological Association of the United Kingdom
Main Authors: Srinivasagam, R. T., Raymont, J. E. G., Moodie, C. F., Raymont, J. K. B.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1971
Subjects:
Aquatic Science
Euphausia superba
Meganyctiphanes norvegica
Online Access:http://dx.doi.org/10.1017/s0025315400018051
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400018051
Description
Summary:The amino acid composition has been investigated in two euphausiids, Euphausia superba Dana and Meganyctiphanes norvegica (M. Sars), and one mysid, Neomysis integer Leach. Protein-bound amino acids show a very considerable degree of similarity: glutamic acid, aspartic acid, lysine, leucine and arginine are predominant in all three crustaceans, and occur in that order of importance. Together they amount to ~ 50% of the total protein hydrolysates. Concentrations of free amino acids show greater differences between the zooplankton species, but taurine, glycine and arginine are very important in all three. Lysine and ornithine occur in fair quantities in both euphausiids, and proline and alanine are moderately important in Euphausia superba and Neomysis integer.

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