Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923"
Viser treff 141-160 av 541
-
Morphological development of halibut (Hippoglossus hippoglossus) larvae with special reference to mouth development and metamorphosis
(ICES CM Documents;1987/F:18, Working paper, 1987)Halibut (Hippoglossus hippoglossus) larvae were raised from hatching to beyond metamorphosis in 11.5 m3 plastic bags with a temperature stable around 6°C. Standard length, myotome height, eye diameter and yolk sac length ... -
Mortality and injuries of haddock (Melanogrammus aeglefinus) that are caught by pelagic longline
(ICES CM documents, Working paper, 2002)By-catches of haddock (Melanogrammus aeglefinus) below legal size (44 cm total length) in the seasonal pelagic longline fisheries for haddock off the coast of Finnmark, northern Norway, are often high. The small fish are ... -
Mortality and injuries of haddock, cod and saithe escaping through codend meshes and sorting grids
(ICES CM documents, Working paper, 2002)Mortalities and injuries of the gadoids haddock (Melanogrammus aeglefinus L.), cod (Gadus morhua L.) and saithe (Pollachius virens L.) were studied after codend and grid escapement in two full scale trials in 2000 and 2001 ... -
Multispecies considerations
(Working paper, 1997) -
Norwegian acoustic survey of North East Arctic cod on the spawning grounds off Lofoten
(ICES CM Documents;1997/Y:18, Working paper, 1997)An acoustic survey of the spawning stock of North East Arctic Cod off Lofoten has been performed annually in March-April since 1982. The estimates for 1985-1997 have been recalculated and mean length and weight at age ... -
Norwegian blue whiting investigation in April/May 1980.
(ICES CM Documents;1980/H:61, Working paper, 1980)An acoustic survey on the blue whiting stock was conducted from 8 April to 14 May 1980. The area west of the British Isles was covered twice and then the area around the Farces and further up to Shetland and the Norwegian ... -
Norwegian investigations in 1984 -1985 on juvenile herring
(ICES CM Documents;1985/H:53, Working paper, 1985)This paper describes tlte Norwegian investigations on juvenile herring (0-, I- and II-group) of the Norwegian spring spawning stock. The investigations were carried out in Norwegian coastal areas and in the Barents Sea ... -
Norwegian investigations on Gonatus fabricii (Lichtenstein)
(ICES CM Documents;1995/K:12, Working paper, 1995)By far the majority of the investigated Gonatus fabricii were caught as bycatch by pelagic trawls fishing in the upper 60 m. Sampling took place in April/May, June/July and August/September in the period 1978- 1991. The ... -
Observations of abundance, stock composition, body size and food of postsmolts of Atlantic salmon in the NE Atlantic during summer
(ICES CM Documents;1996/M:4, Working paper, 1996)Postsmolt Atlantic salmon were caught during pelagic trawl surveys in the Norwegian Sea in July-August, 1991 and 1995, and off the Hebrides in May-June 1995. Using the swept area technique abundance estimates of postmolts ... -
Observing behaviour of over-wintering Herring (Clupea harrengus L.) in Ofoten with Acoustic Current profiler
(ICES CM Documents;2003/Q:6, Working paper, 2003)In this paper we present results and interpretation of velocity and signal strength data collected with a ‘Continental’ Current Profiler on over-wintering herring in the Ofoten in the North of Norway. The instrument was ... -
Occurence and structure of cysts in x-cell lesions of Atlantic cod (Gadus morhua L.)
(ICES CM Documents;1994/E:12, Working paper, 1994)Introduction: Despite numerous investigations the nature and origin of x -cells remain unknown. These ovoid, pale-staining cells with a large, round nucleus and prominent nucleolus are known to occur in the form of ... -
Occurence of blue whiting in trawl catches during surveys from Portugal to Faroe Islands, 1979- 1995
(ICES CM Documents;1996/S:30, Working paper, 1996)Historical data on blue whiting (Micromesistius poutassou) from survey trawl stations of 7 countries, have been congregated and prepared into special files, together with corresponding temperature and salinity observations. ... -
Oil-tainting of fish, a laboratory test on salmon and saithe
(ICES CM Documents;1976/E:33, Working paper, 1976) -
Overview of the EU fair project "STEREO" (Stock effects on recruitment relationships)
(ICES CM Documents;1999/Y:10, Working paper, 1999)The overall objective of the STEREO project is to improve the methodology for determining limit reference points for the biomass of exploited fish stocks. Limit reference points set boundaries which are intended to ... -
Parasitic nematodes in stomachs of grey seals, Halichoerus grypus, and common seals, Phoca vitulina, along the Norwegian coast.
(ICES CM Documents;1984/N:3, Working paper, 1984)The nematode infestation in stomachs of 55 grey and 127 common seals were examined in the period 1976-1980. The seals were caught in Norwegian coastal waters between 62° and 67° North. In 48 adult grey seals the infestation ... -
Pelagic occurrence of Greenland halibut (Reinhardtius hippoglossoides) studied by means of vertical longlines
(ICES CM Documents;2004/K:69, Working paper, 2004)In order to calculate reliable survey indices it’s important to know the dynamics of vertical distribution of a fish species. The vertical distribution of Greenland halibut (Reinhardtius hippogolossoides) cannot be studied ... -
Physical stress on halibut larvae
(ICES CM Documents;1986/F:18, Working paper, 1986)Halibut larvae were exposed to physical stress in the form of different levels of airation. Survival rate, development, dry weight, RNA, DNA and protein were measured. At the end of the experiment the larvae exposed to ... -
Pigmentation of salmonid - a comparison of astaxanthin and cantaxanthin as pigment sources for rainbow trout
(ICES CM Documents;1985/F:24, Working paper, 1985)Rainbow trout were fed a diet supplemented with astaxanthin and cantaxanthin. The ratios of astaxanthin to cantaxanthin were determined in plasma, faeces and flesh. During 65 days of feeding the flesh reached a level ... -
Pilot scale studies of intensive cod farming in Norway
(ICES CM Documents;1985/F:22, Working paper, 1985)Cod fry produced in a seawater pond at Austevoll, Norway were used in a farming experiment. Cod larvae were start fed on the natural plankton in the pond. Additional feeding with dry pellet started when the fry were 60 ... -
Predation on the eggs of Norwegian spring-spawning herring at a spawning ground outside the westcoast of Norway in 1981
(ICES CM Documents;1985/H:55, Working paper, 1985)Predation on the eggs of demersal spawners has been reported several times, and findings of haddock feeding on capelin or herring eggs is a well known phenomenon. A spawning ground where spawning has been detected through ...