Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på tittel
Viser treff 245-264 av 314
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Scale Character and Growth Rate - A study on small fat herring from North Norway
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1959)From the mean values it can be seen that herring of the "Southern-type" in both years have the same growth rate as those of the "Northern-type". The conclusion must be, therefore, that the correlation, "N-type" - slow ... -
The Scales of the Herring as a Means of Determining Age, Growth and Migration
(Report on Norwegian Fishery and Marine Investigations, Research report, 1907) -
The scientific name, distribution and characteristics of the blue ling, Molva dypterygia (Pennant), from West Greenland and Newfoundland areas
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. A discussion of the various scientific names used for the blue ling leads to the conclusion that the correct name is Molva dypterygia (Pennant, 1784). 2. Meristic and morphometric characteristics are provided for two ... -
Seasonal changes in the phytoplankton at various points off the Norwegian West Coast : (Observations at the permanent oceanographic stations, 1945-46)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1958)1. Quantitative phytoplankton samples from four of the Permanent Oceanographic Stations of the Institute of Marine Research of the Fisheries Directorate, Bergen: Utsira and Sognesjøen in the southern part of the Norwegian ... -
Seasonal variations of the oceanographic conditions off the southwest coast of India during 1971-1975
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1987)As part of a survey of the coastal fish resources off the southwest coast of India, the UNDP/ FAO (United Nations Development Programme/Food and Agriculture Organization) Pelagic Fishery Project, Cochin, collected ... -
Simple calibration technique for the split-beam echo-sounder
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1989)The split-beam echo-sounder is used to measure the target strength of fish. Calibration of this instrument requires sensitivity measurements to be made throughout the cross-section of the acoustic beam. It is necessary ... -
Some biological aspects of cod larvae (Gadus morhua L.)
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1980)The development of functional larval stages is described in relation to different yolk sac stages. Morphological and histological work has been done concomitantly with the observation on the larval feeding behaviour. ... -
Some Observations on Cod in Northern Waters - Preliminary Report
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1934) -
Some Observations on the Food of Cod (Gadus callarias L.) of the 0-II-group from Deep Water and the Littoral Zone in Northern Norway and from Deep Water at Spitzbergen
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1948) -
Some Observations on the Iceland scallop Chlamys islandica (Müller) in Norwegian waters
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963)An investigation has been started on the Iceland scallop, Chlamys islandica (O. F. Müller). In northern Norway this species is mainly found in fjords with a narrow sill at the entrance and on a bottom with sand, gravel ... -
Some Technological Aspects of the Norwegian Tuna Purse Seining Fishery
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1963) -
Sources of variation in weight and length of Atlantic salmon
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1983)Variances of weight and total length of four year classes of farmed Atlantic salmon after two years in the sea were distributed on strain, family, maturing/immature (after two winters) and sex. Higllly significant ... -
Soviet tagging of harp and hooded seals in the North Atlantic
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1971)In 1960-1968, 2 705 harp seal pups and 55 adult female harp seals were tagged in the White Sea. At Newfoundland 79 harp seal pups were tagged in 1963, and in the Jan Mayen area of the Greenland Sea 50 hooded seal pups ... -
The Spawning Zone in Cod Otoliths and Prognosis of Stock
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1935) -
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 ...