Trypsin and trypsinogen as indices of growth and survival potential of cod (Gadus morhua L.) larvae. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
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http://hdl.handle.net/11250/115106Utgivelsesdato
1984Metadata
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Using a radioimmunoassay it could be demonstrated that the
content of trypsin and trypsinogen in cod larvae increased
markedly during the first 4 days after hatching. In the same
period the trypsin activity, measured by the conventional
method, was constant, but increased considerably on day 5. At
that time the larvae were ready for the first feed intake.
After day 5 the total quantity of trypsin and trypsinogen
dropped again, independent of whether the larvae received any
food or not.
Larvae offered food which supported growth, started to
produce trypsin and trypsinogen, whereas, in starving larvae
and those offered incomplete diets, the level of trypsin and
trypsinogen remained very low. We have concluded that the
radioimmunoassay is a convenient and sensitive method for the
quantitative determination of trypsin and trypsinogen in very
small samples, and that the level of trypsin ard trypsinogen
may be used as an index of the feeding status and growth
potential of tne larvae.
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HavforskningsinstituttetSerie
Flødevigen rapportserie1, 1984