Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "long line"
Viser treff 1-20 av 23
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Basic studies of Norwegian longline gear
(ICES CM Documents;1976/B:27, Working paper, 1976) -
The behaviour of whiting (Gadus merlangus) in relation to long lines
(ICES CM Documents;1977/B:44, Working paper, 1977) -
Behaviour studies on fish reaction to long lines
(ICES CM Documents;1978/B:22, Working paper, 1978)This study is a continuation of a field investigation on the behaviour of fish towards long lines, started in 1976. The present paper gives an analysis of the effect of current and time of the day on the activity of whiting ... -
Effects of a geophysical survey on catching success in longline fishing
(ICES CM Documents;1991/B:40, Working paper, 1991)The effects on longline catches of a geophysical survey conducted during the winter fishery for cod (Gadus morhua) were studied. Spatial extent of the effects was investigated by comparing the catch rates of longlines ... -
Effects of setting time, setting direction and soak time on longline catch rates
(ICES CM Documents;1996/B:34, Working paper, 1996)Most studies of factors affecting catching efficiency and selectivity in longlining have focused on various gear parameters (mainline and snood material, hook design and size, rigging) and on the bait (type and size), ... -
Effects of trawling and longlining on the yield and biomass of cod stocks - numerically simulated
(ICES CM Documents;1990/G:32, Working paper, 1990)Numerical studies were conducted on the effects of trawl and longline catches on a cod stock and possible yields from it. Five year mean age composition of Pacific cod (Gadus macrocephalus) from the Bering Sea was used ... -
Engineering and fish reaction aspects of longlining - A review
(ICES CM Documents;1981/B:35, Working paper, 1981) -
Factors affecting catch of long lines, evaluated by simulation model of long line fishing
(ICES CM Documents;1983/B:4, Working paper, 1983) -
Fishing experiments with an alternative longline bait based on nylon bags
(ICES CM Documents;1987/B:19, Working paper, 1987)This report describes two fishing trials using an alternative longline bait, one in the fishery for torsk and ling, the other in the fishery for cod and haddock. A bait based on fine-meshed nylon bags as reinforcement ... -
Full scale tests of improved longline gear
(ICES CM Documents;1985/B:45, Working paper, 1985)A new type of bottom set longline was tested in trials during the cod fishery off Finnmark November-December 1984. This gear differed from traditional longloine, by being rigged with swivel-mounted monofilament gangions ... -
Further results of Norwegian longline studies
(ICES CM Documents;1977/B:43, Working paper, 1977) -
Longline: Full scale trials with new hook designs and reduced size of bait
(ICES CM Documents;1983/B:32, Working paper, 1983) -
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 ... -
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 ... -
Report of the Ad hoc Group on Deep-sea Survey (AGDSS)[ 3 March 2011]
(ICES CM documents;2011/ACOM:54, Working paper, 2011) -
Review and evaluation of three mitigation measures - bird-scaring line, underwater setting and line shooter - to reduce seabird bycatch in the Norwegian longline fishery
(ICES CM documents, Working paper, 2000)Seabirds scavenge baits from the hooks of commercial longlines, resulting in incidental seabird mortality and bait loss. As interactions between seabirds and longline fishing may cause decline in seabird populations and ... -
Size selective effects of a plastic body on longline hooks
(ICES CM Documents;1991/B:46, Working paper, 1991)The potential for improving size selectivity of longlines by using a plastic body attached to the hook shank was tested in a fishing trial for tusk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus). ... -
Swivel connected gangions in mechanized longlining - effect on cath rates and operation
(ICES CM Documents;1987/B:18, Working paper, 1987)Multifilament longline with swivel connection between gangions and mainline were compared with traditionally rigged gear on a vessel equipped with a mechanized longline system. The swivel-lines were adapted to the ... -
Synergistic effects of different baits on the same hook in the longline fishery for hake (Merluccius merluccius) and torsk (Brosme brosme)
(ICES CM Documents;1987/B:39, Working paper, 1987)The effects of a combination of different baits on the same hook were tested in two different situations. A bait combination of sardine (Sardina pilchardus) and mackerel (Scomber scombrus) was used to catch hake (Merluccius ... -
Testing of a new hook design in the longline fishery for tusk (Brosme brosme) and ling (Molva molva)
(ICES CM Documents;1987/B:20, Working paper, 1987)The EZ-Baiter Circle hook which is a hybrid design between the classical J- and Circle hook shapes, is developed to provide a more effective hook for use in mechanized longline systems. In comparative fishing trials, ...