Browsing Brage IMR by Subject "VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485"
Now showing items 61-80 of 180
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Hva kan et register over vågehvalens DNA fortelle om atferd og biologi?
(Ottar;nr. 280 - 2010, Journal article, 2010)DNA-registeret for vågehval inneholder data fra alle de ca. 7000 individene som er tatt av norshe hvalfangere siden 1997. De genetishe profilene gjør det mulig å studere bestandsstruktur, vandringsmønster og bestandsstørrelse. ... -
Identification of fish communities in the Barents Sea: Is there a faunal discontinuity across the Polar Front?
(ICES CM Documents;2002/L:17, Working paper, 2002)Fish species inhabiting the Barents Sea display great seasonal and between-year variation in abundance and distribution. This study describes the assemblages and distributions of fish species in the south-western part of ... -
Importance of fast ice and glacier fronts for female polar bears and their cubs during spring in Svalbard, Norway
(Journal article; Peer reviewed, 2012-02-13)Arctic sea ice is declining rapidly, making it vital to understand the importance of different types of sea ice for ice-dependent species such as polar bears Ursus maritimus. In this study we used GPS telemetry (25 polar ... -
Individual based spatial models with evolved fish behaviour
(ICES CM Documents;1998/J:16, Working paper, 1998)Due to spatial heterogeneity, the survival and growth of fishes depend upon their habitat. For mobile pelagic fishes, it hence becomes important to analyse the factors responsible for spatial dynamics in order to understand ... -
Influence of sea temperature on herring distribution and migration in the Norwegian Sea in April 1997
(ICES CM Documents;1999/M:3, Working paper, 1999)After spawning at the west coast of Norway, the Norwegian spring spawning herring migrates northwestwards into the Norwegian Sea to feed in early April. The herring enters areas with distinct oceanographic features both ... -
Killer whales (Orcinus orca L.) and saithe (Pollachius virens L.) trap herring (Clupea harengus L.) in shallow water by taking advantage of steep bottom topography
(ICES CM Documents;2002/N:20, Working paper, 2002)Whales and fish use a wide range of hunting tactics in order to catch their prey. Predatorprey interactions have been seen during the massive wintering of herring (Clupea harengus) in steep bottomed topography in Lofoten, ... -
Kunnskapsbasis for utvikling av alternative lineagn: fiskeatferd, sanseapparat og egenskaper ved agnet
(Rapport fra Havforskningen;Nr. 12-2013, Working paper, 2013)Kunnskap om fiskens atferd når den søker etter mat er avgjørende for arbeid som skal forbedre linefisket og ikke minst for utviklingen av nye agntyper. Dette er en oversikt over det vi vet om hvordan fisk får teften av og ... -
Large scale release experiment of juvenile lobsters, Homarus gammarus, in Norway
(ICES CM Documents;1990/K:2, Working paper, 1990)A large scale spring release of juvenile lobsters, Homarus gammarus, was conducted at Kvitsøy, southwestern Norway in March 1990. The lobsters, 14,700 one and a half year old and 8,700 six months old, were tagged internally ... -
Light Primes the Escape Response of the Calanoid Copepod, Calanus finmarchicus
(Journal article; Peer reviewed, 2012-06-27)The timing and magnitude of an escape reaction is often the determining factor governing a copepod’s success at avoiding predation. Copepods initiate rapid and directed escapes in response to fluid signals created by ... -
Long-term movement patterns of coastal cod (Gadus morhua)
(ICES CM Documents;2001/L:18, Working paper, 2001)Movement patterns were studied by means of hydroacustic telemetry along the Norwegian Skagerrak coast. Ultrasonic transmitters was surgically implanted in 10 coastal cod, and released in the same area as they where caught. ... -
Lys og temperatur påvirker fiskens adferd - har det konsekvenser for fisketetthet og lyssetting?
(Havforskningsnytt, Working paper, 2006) -
Mackerel behaviour and seismic signals - a pilot net pen study
(Rapport fra Havforskningen;19-2016, Working paper, 2016-04-28)English: A pilot study to investigate behavioural changes induced by sound exposure for mackerel was conducted in October 2015 at Austevoll research station. The main objective was to test the experimental set up, and ... -
Mapping the migration pattern of schooling fish by use of multi-beam sonar during conventional acoustic surveys
(ICES CM Documents;1994/Mini:9, Working paper, 1994)Information on migration pattern and swimming behaviour of pelagic fish schools in the vicinity of steaming survey vessels has been collected by a multi-beam sonar system connected to an external device for data collection ... -
Methods for testing smell response in fish
(ICES CM Documents;1977/B:45, Working paper, 1977) -
Migration behaviour of herring along the cold front in the Norwegian Sea in April 1997
(ICES CM Documents;1997/EE:12, Working paper, 1997)The behaviour of Norwegian spring spawning herring when migrating to the feeding areas in the Norwegian Sea in April was mapped by an acoustic survey in 1997. The distribution of herring was recorded by conventional echo ... -
Migration behaviour of Norwegian spring spawning herring when entering the cold front in the Norwegian Sea
(ICES CM Documents;1996/H:13, Working paper, 1996)The distribution of Norwegian spring spawning herring when migrating to the feeding areas in the Norwegian Sea in spring has been mapped by surveys in April1995 and 1996. The schooling behaviour of the herring have been ... -
Migratory behaviour of reared Norwegian coastal cod and north east Arctic cod
(ICES CM Documents;1995/G:11, Working paper, 1995)This paper is based on experiments to test if differences in migratory behaviour of Norwegian coastal cod and north east Arctic cod is related to parental origin or, alternatively, is related to the environmental experienced ... -
Migratory patterns of escaped farmraised Atlantic salmon
(ICES CM Documents;1990/F:55, Working paper, 1990)Simulated escapes of farmed salmon from netpens are done. Migratory behaviour and routes are studied by combining acoustic tagging and standard tagging - release methodology. A prototype of a recapture trap has been ... -
Monitoring changes in abundance of gadoids with varying availability to surveys
(ICES CM Documents;1991/G:76, Working paper, 1991)The use of scientific survey data for assessing abundance of commercially important fish stocks has become a managerial necessity in many regions. Errors and bias in estimates from such surveys may thus have great economic ...