Blar i Flødevigens rapportserie (1982-1992) på tittel
Viser treff 61-67 av 67
-
A tagging and release experiment of 2-group artificially reared coastal cod (Gadus morhua). In: Flødevigen rapportserie no 1, 1990
(Flødevigen rapportserie, Research report, 1990)Cod were raised in an outdoor enclosure for the first 3 months after hatching and then transferred to the laboratory. After 2 years and at a length range from 33 to 52 cm (0.3 kg to 1.3 kg), 68 cod were tagged and ... -
Tagging and release experiments on 0-group coastal cod (Gadus morhua L.) reared in an outdoor basin
(Flødevigen rapportserie, Conference object, 1984)Juvenile coastal cod (Gadus morhua L.), hatched in the laboratory and reared in a large outdoor basin at Flødevigen Biological Station, were tagged and released in coastal waters in southern Norway. They were released ... -
The timing of cod spawning on the Scotian Shelf
(Flødevigen rapportserie, Conference object, 1984)We used results from the Scotian Shelf Ichtyoplankton Programme to describe the spatial and temporal distributions of cod eggs and larvae off the coast of Nova Scotia. Summer spawning is restricted to the waters along ... -
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
(Flødevigen rapportserie, Conference object, 1984)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 ... -
Variation of peak spawning of arcto-Norwegian cod (Gadus morhua L.) during the time period 1929-1982 based on indices estimated from fishery statistics. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
(Flødevigen rapportserie, Conference object, 1984)The weekly amounts of roe and cod landed in the main spawning area at Vestfjorden are known since 1929. An index of the median of the spawning intensity curve was constructed on the basis of an analogy to the gonosomatic ... -
Water balance in cod eggs. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
(Flødevigen rapportserie, Conference object, 1984)The yolk osmolarity of cod eggs decreases from about 400 mOsm 2 days after spawning to 300 mOsm at hatching, as opposed to a sea water osmolarity of c. l000 nOsm. The osmolarity difference forces an osmotic water loss upon ... -
Yearclass strength of north-east Arctic cod at the 0-group stage. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
(Flødevigen rapportserie, Conference object, 1984)On the basis of recent developments in artificial propagation of cod fry it has been suggested that propagated cod fry may be released in the Barents Sea and the Svalbard region, the feeding areas of North-East Arctic ...