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Lakselus, Lepeophtheirus salmonis Krøyer (Copepoda caligidae). Frittlevende larvestadier, vekst og infeksjon på laks (Salmo salar L.) fra oppdrettsanlegg og kommersielle fangster i vestnorske farvann 1973-1974
(Master thesis, 1975)To ektoparasittiske copepoder, tilhørende fam. Caligidae, ble registrert på vill og oppdrettslaks. Disse var Lepeophtheirus salmonis Krøyer, 1838 og Caligus elongatus Nordmann, 1832. Bare L. salmonis ble valgt som objekt ... -
Relasjoner mellom integrerte ekkointensiteter og fisketetthet
(Master thesis, 1975) -
Ei ressursbiologisk gransking av torsken på Mørekysten og i Borgundfjorden
(Master thesis, 1977) -
Target strength measurements of fish
(Journal article; Peer reviewed, 1977)During the summer of 1971, target strength measurements of fish were made at two frequencies, 38 kHz and 120 kHz. The relationships between dorsal aspect target strength and fish length were worked out for four species. ... -
Utbredelse og vekst hos gapeflyndre, Hippoglossides platessoides (Fabricius), i Barentshavet
(Master thesis, 1977) -
Echo abundance indices of 0-group fish in the Barents Sea, 1965-1972
(Journal article; Peer reviewed, 1977)In order to obtain estimates of year class strength of 0-group fish, joint international surveys have been conducted each year since 1965 in the Barents Sea. The density of fish has been estimated by visual grading of the ... -
Some results of abundance estimation studies with echo integrators
(Journal article; Peer reviewed, 1977)Two examples of acoustic fish stock abundance estimation are given. The first is the estimation of the exploited Barents Sea capelin stock; the second is measurement of the size of the unexploited blue whiting stock. Surveys ... -
Bassengstudier av torskelarvens næringsvalg, vekst og overlevning, fra klekking til metamorfose
(Master thesis, 1978) -
The effect of recent changes in the North Sea mackerel fishery on stock and yield
(Journal article; Peer reviewed, 1978)The paper deals with biological aspects and exploitation of the mackerel (Scomber scombrus) stocks occurring in the North Sea. The state of stocks and exploitation in the North Sea area are investigated on the basis of ... -
Presisjon ved akustisk mengdeberegning av fisk
(Master thesis, 1979) -
Uutnytta ressursar i havet
(Journal article, 1979)