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
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 t...
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ftimr:oai:imr.brage.unit.no:11250/115106 2023-05-15T16:18:59+02:00 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 Hjelmeland, Knut Huse, Ingvar Jørgensen, Terje Molvik, G. Raa, Jan 1984 538309 bytes application/pdf http://hdl.handle.net/11250/115106 eng eng Havforskningsinstituttet Flødevigen rapportserie 1, 1984 urn:issn:0333-2594 http://hdl.handle.net/11250/115106 189-202 Conference object 1984 ftimr 2021-09-23T20:14:34Z 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. Conference Object Gadus morhua Institute for Marine Research: Brage IMR |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
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. |
format |
Conference Object |
author |
Hjelmeland, Knut Huse, Ingvar Jørgensen, Terje Molvik, G. Raa, Jan |
spellingShingle |
Hjelmeland, Knut Huse, Ingvar Jørgensen, Terje Molvik, G. Raa, Jan 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 |
author_facet |
Hjelmeland, Knut Huse, Ingvar Jørgensen, Terje Molvik, G. Raa, Jan |
author_sort |
Hjelmeland, Knut |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publisher |
Havforskningsinstituttet |
publishDate |
1984 |
url |
http://hdl.handle.net/11250/115106 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
189-202 |
op_relation |
Flødevigen rapportserie 1, 1984 urn:issn:0333-2594 http://hdl.handle.net/11250/115106 |
_version_ |
1766005279211651072 |