Blar i Brage IMR på emneord "purse seine"
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Behaviour of Norwegian spring spawning herring in relation to underwater light
(ICES CM Documents;1988/B:24, Working paper, 1988)The Norwegian coastal purse seiners, with shallow nets, have experienced difficulties in catching the herring due to their natura! behaviour being located too deep during day time and toe scattered during night time. ... -
Experience with an improved power block for purse seining
(ICES CM Documents;1983/B:30, Working paper, 1983) -
Forbedret arrangement av snurperinger
(Fisken og havet, Research report, 1999)Lie Management AS has developed an improved arrangement of purse rings. The concept consists of three parts; a wing ring, an intermediate link and a hook with a spring-loaded closing device. The purse ring system has ... -
Halvparten av nordsjøsilda kan dø etter trenging i not : Crowding in purse seine can kill half the catch of North Sea herring
(Havforskningsnytt;Nr. 6 - 2010, Working paper, 2010)Catch regulation in purse seining for herring has traditionally been done by discarding all or part of the catch if it is too big, or if the size or quality of the herring does not match requirements. Net burst is also ... -
Har testet beste praksis for slipping fra not
(Havforskningsnytt;Nr. 2-2016, Working paper, 2016) -
Measurements of the density coefficient and average target strength of herring using purse seine.
(ICES CM Documents;1982/B:33, Working paper, 1982)Integrator values were obtained from a school of herring. The fish density of this school was determined on the basis of a purse seine catch. From these values a conversion factor and average target strength for herring ... -
Mortality of mackerel (Scomber scombrus L.) after pursing and slipping from a purse seine
(Journal article; Peer reviewed, 2010-10)A new method was used to study the effect of crowding and subsequent slipping from a purse seine on the mortality of Atlantic mackerel (Scomber scombrus L.). Mackerel were allowed to swim from a purse seine through a ... -
Mortality of mackerel (Scomber scombrus L.) after pursing and slipping from a purse seine
(Journal article; Peer reviewed, 2010-10)A new method was used to study the effect of crowding and subsequent slipping from a purse seine on the mortality of Atlantic mackerel (Scomber scombrus L.). Mackerel were allowed to swim from a purse seine through a ... -
New gear handling systems for coastal purse seining.
(ICES CM Documents;1982/B:37, Working paper, 1982)The paper is describing a new gear handling system for coastal purse seiners. The system consist of a hollow manuverable ring needle through which the purse wire is passing. Solid type rings can be used since the rings ... -
Notfisket i Lofoten
(Fisken og havet;1962 - Nr. 3, Journal article, 1962)The effect of the Lofoten purse-seine fishery is considered. Both biological and fishery statistical data are used, and the main features of this analysis are the following: The difference between the length distributions ... -
Ny flåsnurpe for ringnotflåten. Forsøk med forskjellige utforminger og rigginger av flåsnurpe for ringnot
(Rapport fra Havforskningen;Nr. 25-2013, Working paper, 2013-06) -
Ny flåsnurpe kan hindre tap av fisk
(Havforskningsnytt;Nr. 6 - 2012, Working paper, 2012)Det er som oftest ved store, tunge notkast og i dårlig vær at fisk "renner" over flåen under trenging og pumping. en nyutviklet flåsnurpe som hindrer slikt tap av fisk, kan bidra til at ringnotfiske blir mer ressursvennlig. -
Optimization of purse seines by large meshed sections and low lead weight. Theoretical considerations, sinking speed measurements and fishing trials.
(ICES CM Documents;1988/B:25, Working paper, 1988)Theoretical considerations on material requirements and sinking speed by use of different mesh size and lead weight in purse seines are outlined. Measurements confirmed that the sinking speed varied with mesh size and ... -
Position prediction of herring schools in purse-seine capture situations
(ICES CM Documents;1987/B:10, Working paper, 1987)Sonar observations of herring schools in the North Sea and along the Norwegian Coast reveal a rather constant swimming behaviour of individual schools in purse-seine capture situations. On the basis of this a method for ... -
Size and age composition of the Norwegian purse-seine catches in the North Sea and the Skagerak
(ICES CM Documents;1968/H:21, Working paper, 1968) -
Size-selection of mackerel and saithe in purse seine
(ICES CM Documents;1994/B:28, Working paper, 1994)In purse seine fisheries, there may exist potentials for size selection because some of the fish in the catch are less than the legal size, and because different size groups are paid differently. Both potentials are ... -
Sonar observations of schooling mackerel during purse seining
(ICES CM Documents;1988/B:27, Working paper, 1988)The swimming behaviour and horizontal dimensions of mackerel schools have been quantified by use of a multibeam, true motion sonar during purse seining in the Northern North Sea, August 1986. The horizontal dimensions ... -
Survival of mackerel and saithe escaping through sorting grids in purse seines
(ICES CM Documents;1996/B:24, Working paper, 1996)Technology for efficient size-selection of mackerel and saithe in purse seines has been developed. A critical constraint for application of the technology is the survival of escaping fish. We have conducted a series of ...