Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på tittel
Viser treff 259-278 av 314
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Sprat from Norwegian Waters - An Analysis of Vertebrae Counts
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1951)The present report gives a review of some results of the vertebrae counts of sprat from the years 1927-1949. Within each sample of sprat of the 0-group there is generally a positive correlation between the size of the ... -
A staging system for larval cod (Gadus morhua L.)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1986)A staging system of larval cod is described. The system is based on the resorption of the yolk mass and the cell layers surrounding it combined with eye, mouth and gut development. A determination key is given. Each stage ... -
Standard calibration of echo sounders and integrators with optimal copper spheres
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1983)Calibration of fisheries echo sounders and integrators by means of optimal copper spheres is reviewed. The standard procedure is elaborated. Maintenance of O.1 dB precision is described for a wide range of temperatures ... -
Stock size fluctuations and rate of exploitation of the norwegian spring spawning herring, 1950-1974
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)Stock size fluctuations and rate of exploitation of the Norwegian spring spawning herring, 1950-1974. FiskDir. Skr. Ser. HavUnders., 16: 315-337. The collapse of the Norwegian spring spawning herring stock is described, ... -
Studies of the dissolved organic compounds in the sea - A preliminary report on the isolation, separation and identification of free amino acids
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963)A method of concentrating and desalting sea water using evaporation and ion exchange techniques is described. Circular paper chromatography has been used to separate and identify free amino acids in desalted concentrates ... -
Studies on blood proteins in herring
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. Hemoglobins and serum proteins of herring have been analyzed by agar gel electrophoresis (hemoglobins) and combined starch and agar gel electrophoresis (serum proteins). The material comprises twelve samples from the ... -
Studies on blood proteins of mackerel
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1970)1. 14 samples of mackerel, about 1800 specimens, from the North Sea and the Norwegian Coast were analysed by agar gel electrophoresis (hemoglobins) and combined starch and agar gel electrophoresis (serum proteins and ... -
Studies on hemoglobins and serum proteins in sprat from Norwegian waters
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1968) -
Studies on hemoglobins of some gadoid fishes
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. Hemoglobin of tusk, forked hake, ling, blue ling, hake, pout, Norway pout, pollach, coalfish, haddock and blue whiting were studied by agargel electrophoresis. 2. Both inter- and intraspecific variations in hemoglobin ... -
Studies on serum esterase in herring and sprat
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. Herring and sprat serum esterase has been studied by combined starch and agar gel electrophoresis at pH 9.0. Both strong and weak bands which represesented esterase activity occurred in both species. 2. Most herring ... -
Studies on the High Nitrogen Content in the Physostome Swimbladder
(Fiskeridirektoratets skrifter, Serie Havundersøkelser;vol 13 no 5, Research report, 1963) -
Studies on the long term storage of living saithe, Pollachius virens Linnaeus, 1758
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1976)Studies on the long term storage of living saithe, Pollachius virens Linnaeus, 1758. FiskDir. Skr. Ser. HavUnders., 16: 279-300. In order to observe how far muscle nutrition is affected during long term starvation, saithe ... -
A Study of the Relationship between the Water Temperature and the Concentration of Cod in West Greenlands Waters
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1964)The relation between catch of cod/per unit effort and temperature in West Greenland waters has been studied by material from bottom long line fishing experiments and from official fishery statistics. The experiments have ... -
A Study on the Life History and Migrations of the Norwegian Spring-Herring based on the Analysis of the Winter Rings and Summer Zones of the Scale
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1936) -
Survival of tagged Barents Sea capelin (Mallotus villosus Müller) and estimates of the 1973, 1974 and 1975 spawning stocks from tag returns
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)Capelin tagged with internal stainless steel tags were kept in net enclosures for 8-9 days to obtain the survival factor. This was found to be 0.89 for males while additional information from routine tag recoveries indicated ... -
Swimbladder cross sections and acoustic target strengths of 13 pollack and 2 saithe
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1985)Data are presented on the swimbladder form and acoustic target strengths of each of 15 surface-adapted gadoids, 13 pollack (POLLACHIUS POLLACHIUS) and 2 saithe (POLLACHIUS VIRENS), of lengths from 31.5 to 44.5 cm. The ... -
Swimming speed of fish as a factor in gear research
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963)The hydrodynamic resistance of the bodies of several species of commercially important marine fish has been measured. Based on the hydrodynamic resistance and the energy metabolism of the fish, theoretical swimming ... -
Sydøstgrønland, Jan Mayen - Fiskeriundersøkelser
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1936) -
Synopsis of the Norwegian Marine Thalamophora
(Fiskeridirektoratets skrifter / Serie havundersøkelser, Research report, 1900) -
Tanafjorden - En finnmarksfjords oseanografi
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1946)