Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på tittel
Viser treff 189-208 av 314
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Observations on the embryonic development of capelin (Mallotus villosus MÜLLER) from the Barent Sea
(Fiskeridirektoratets skrifter, serie havundersøkelser;vol 18, no. 2, Research report, 1986)The embryonic development of the Barents Sea capelin is described, with emphasis of characteristic features which can be applied in the ageing of eggs. The development is described for three different temperatures observed ... -
Observations on the transport of sugars in the temperate holothurian, Cucumaria frondosa
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1974)KRISHNAN, S. and SOLEMDAL, P. 1974. Observations on the transport of sugars in the temperate holothurian, Cucumaria frondosa. Fisk. Dir. Skr. Ser. HavUnders., 16: 171-176. Different views have been put forward regarding ... -
Occurrence of shell disease in lobsters, Homarus gammarus (L.), in the southern part of Oslofjord, Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1981)Shell disease in a natural lobster population in Norway is described. The external signs were characterized by necrotic lesions of the exoskeleton, especially on the large chelae. Chitin-degrading bacteria were cultured ... -
Om dypvannsreken ved Spitsbergen
(Fiskeridirektoratets skrifter, serie havundersøkelser, Research report, 1942)The life history of the deep sea prawn, Pandalus borealis, in Spitsbergen waters is traced on the basis af samples collected mainly in 1938 and 1939. In measuring the prawn a different method than that used by previous ... -
Omplantningene av danske rødspetter (Pleuronectes platessa) til Oslofjorden og Skagerak 1934 og 1936
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1953)1. A short review is given on the transplantation of young plaice (Pleuronectes platessa Lin.) in Europe, from the first experiments in Denmark, about 1890, to the large transplantations in later years. From the North ... -
On acoustic identification, sizing and abundance estimation of fish
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1971)A method using the fish angle (i.e. the change in target strength with fish aspect) for identification purposes is described. Significant differences in fish angle between cod and coalfish have been observed at sea. The ... -
On Periodical Variations in the Yield of the Great Sea Fisheries and the Possibility of Establishing Yield Prognoses
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1942) -
On the Age and Growth of the Cod (Gadus callarias L.) from the Norwegian Skagerrack Coast
(Report on Norwegian Fishery and Marine Investigations, Research report, 1933) -
On the Age and Growth of the Pollack (Gadus pollachius L.) from the Norwegian Skagerrack Coast
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1933) -
On the Determination of the Salinity of Sea Water by its Powers of Refraction
(Fiskeridirektoratets skrifter / Serie havundersøkelser, Research report, 1900) -
On the Geographical Variation in Growth and Sexual Development of the Deep Sea Prawn (Pandalus borealis Kr.)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1953) -
On the growth of the cod and the formation of annual zones in the scales
(Report on Norwegian Fishery and Marine Investigations;vol 3 no 6, Research report, 1925) -
On the hydrographic fluctuations in the Labrador Sea during the years 1959-1969
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1974)During the years 1959 - 1969 Norwegian fishery research vessels collected oceanographic data off West Greenland, the observational work mainly being done in April. The data reveal gradually falling temperatures in the upper ... -
On the hydrography of the shelf waters off Moere and Helgeland
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969) -
On the hydrography of the shelf waters off Møre and Helgeland
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. The distribution of temperatures and salinities off the west coast of Norway have been studied, based on observations from cruises in February 1956 and March 1968. 2. The main flow of Coast water follows the edge of ... -
On the life history of the spotted catfish (Anarhichas minor Olafsen)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963)Spotted catfish, Anarhichas minor Olafsen, were sampled from long line and trawl catches taken along the coast of Finnmark, near Bear Island and in the Barents Sea in 1953 and 1954. Age was determined from vertebraes. ... -
On the migrations of the cod in the Skagerak shown by tagging experiments in the period 1954-1965
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. A total of 1,244 cod was tagged from 1954 to 1965. The recapture percentage from the different tagging years varied between 24.9 aid 35.6 with a mean of 29.5 for the whole period. 2. No cod has been recaptured on the ... -
On the possibility of estimating year-class strength by measuring echo-abundance of 0-group fish
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1965)The possibility of estimating the distribution and abundance of 0-group fish by a combination of echo surveying and fishing experiments with pelagic trawl and purse seine is discussed. The existence of scattering layers, ... -
On the problem of the effect of fisheries on fish stocks
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)It is demonstrated by examples that morphological, physiological and behavioural features of fish developed evolutionary and normally of protective value are directly disadvantageous to the fish when subjected to intensive ... -
On the relation between echo intensity and fish density
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1976)On the relation between echo intensity and fish density. FiskDir. Skr.Ser.HavUnders., 16: 301-314. Integrated echo intensities for a wide range of fish densities were measured. The experiments were carried out on live ...