Blar i Published in cooperation with others på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923"
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Effects of continuous flow rate on development and mortality of halibut yolk sac larvae
(ICES CM Documents;1990/F:41, Working paper, 1990)Halibut (Hippoglossus hippoglossus L.) yolk sac larvae were raised in incubators with different rates of continuous flow. Most larvae died between Days 10 and 29 after hatching. Rate of mortality increased with increasing ... -
Effects of different rearing environments on the mortality of Atlantic salmon broodstock and eggs
(ICES CM Documents;1984/F:26, Working paper, 1984)Atlantic salmon (Salmo salar) reared for three years in seawater were moved to brackish- and freshwater before they matured. A control group matured in seawater. The groups were given different feeding regimes the last ... -
Effects of illuminated ekofisk crude oil on yolksac larvae of cod (Gadus morhua L.)
(ICES CM Documents;1982/E:58, Working paper, 1982) -
Effects of low levels of ekofisk crude oil on eggs and yolksac larvae of cod (Gadus morhua L.)
(ICES CM Documents;1982/E:60, Working paper, 1982) -
Effects of low levels of heavy fraction of ekofisk crude oil on eggs and yolksac larvae of cod (Gadus morhua L.)
(ICES CM Documents;1982/E:59, Working paper, 1982) -
Effects of pre-release acclimatization period on salmon return rates
(ICES CM Documents;1995/M:13, Working paper, 1995)42.000 1+smolts of Atlantic salmon were size graded into two size groups and released during three weeks in spring 1993; one group of small and one of large smolts on each of the four release days. Approximately 25% of ... -
Effects on salmon (Salmo salar) from different operational procedures in fish farming
(ICES CM Documents;1988/F:16, Working paper, 1988)The effects on farmed salmon caused by operational procedures as handling, de-lousing, removal of dead fish, grading and transfer were studied by underwater TV-observations, ultrasonic telemetry of heart rate and analyses ... -
Endocrine and nutritional factors affecting the first food uptake by cod larvae
(ICES CM Documents;1982/F:17, Working paper, 1982) -
Enzyme polymorphism expressed in newly hatched cod larvae and genetic analysis of larvae exposed to hydrocarbons.
(ICES CM Documents;1980/F:22, Working paper, 1980)Cod eggs and larvae, at different stage of development, have been analyzed by starch gel electrophoresis. Four common enzymes (phosphoglucose isomerase, phosphoglucose mutase, isocitrate dehydrogenase and lactate ... -
Enzyme polymorphism of sprat from Norwegian waters - preliminary results
(ICES CM Documents;1981/H:65, Working paper, 1981) -
Esterase variation in herring studied by isoelectric focusing
(ICES CM Documents;1997/AA:1, Working paper, 1997)Few suitable genetic characteristics for studying herring population structure are available, and the main aim of the study reported here has been to reveal traits which display useful genetic variations for application ... -
Estimated hatching date and growth history of Norwegian spring spawning herring (Clupea harengus L.) from otolith data of larvae of the 1990 yearclass
(ICES CM Documents;1991/H:14, Working paper, 1991)This study was performed on herring larvae of the 1990 yearclass of Norwegian spring spawners. The larvae were caught in May on the Norwegian shelf in the area from 64 °N - 69 °N. There was one size group of larvae with ... -
Estimates of stock size of cod, haddock, redfish and greenland halibut in the Barents Sea and the Svalbard area, autumn 1987
(ICES CM Documents;1988/G:44, Working paper, 1988)Combined acoustic and bottom trawl survey for cod and haddock were carried out in the Svalbard area together with an acoustic survey in the Barents Sea in autumn 1987. The abundance index in numbers of cod continued ... -
Estimates of stock size of northeast Arctic cod and haddock, "Sebastes mentella" and "Sebastes marinus" from survey data, winter 1988
(ICES CM Documents;1988/G:43, Working paper, 1988)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1988. The fish still had the westerly distribution established in the previous year, but the echo ... -
Estimating initial stomach content using stochastic simulation
(ICES CM Documents;1994/G:16, Working paper, 1994)The stomach evacuation model now in use when quantifying the predation from cod on Barents Sea capelin assumes that the evacuation rate is dependent on the stomach fullness after the last meal, which is not known in the ... -
Estimating the maturity ogive for northeast- arctic cod by a modified mesh assessment model
(ICES CM Documents;1983/G:33, Working paper, 1983) -
Estimation of predation mortalities on capelin using a cod - capelin model for the Barents Sea
(ICES CM Documents;1990/H:16, Working paper, 1990)The Barents Sea capelin stock collapsed during the period 1983-1986. One of the main factors causing the collapse was a rapid increase in consumption of capelin by cod. Based on measurements of stomach evacuation rates ... -
Evaluation of the North-East Arctic saithe (Pollachius virens) acoustic survey
(ICES CM Documents;1997/Y:20, Working paper, 1997)Since 1985 an acoustic survey specially designed for saithe has annually been conducted in October-November by the Institute of Marine Research (IMR) on the Norwegian near coastal banks. Since 1992 the survey has covered ... -
Evaluation of the Norwegian shrimp surveys conducted in the Barents Sea and the Svalbard area 1980- 1997
(ICES CM Documents;1997/Y:7, Working paper, 1997)Trawl surveys for shrimp (Pandalus borealis) have been conducted annually in the Barents Sea and the Svalbard area since 1980 by Norwegian research institutes. The surveys have been conducted in the period April to ... -
Evidence of sampling induced biases in mortality estimates from experiments investigating mortality in fish escaping from towed fishing gears
(ICES CM Documents;2002/V:25, Working paper, 2002)When studying escapes from trawl codends and other selective devices, the most common method of capturing or ‘sampling’ escaping fish is using a codend cover (Figure 1). This paper will summarise a programme of work providing ...