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dc.contributor.authorKaartvedt, Stein
dc.contributor.authorTitelman, Josefin
dc.contributor.authorRøstad, Anders
dc.contributor.authorKlevjer, Thor Aleksander
dc.date.accessioned2015-05-26T08:05:24Z
dc.date.available2015-05-26T08:05:24Z
dc.date.issued2011-10-22
dc.identifier.citationBeyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish 2011, 56 (6):2189 Limnology and Oceanography
dc.identifier.issn00243590
dc.identifier.doi10.4319/lo.2011.56.6.2189
dc.identifier.urihttp://hdl.handle.net/10754/555798
dc.description.abstractWe examined the diel behavior among the jellyfish Periphylla periphylla in Lurefjorden, Norway in a sampling campaign and by a > 3-month continuous acoustic study. Jellyfish distribution and behavior were recorded by an upward-facing, bottom-mounted echo sounder at 280-m depth. The population was typically divided into four groups, each with different behavior. Individuals of behavioral Mode 1 undertook synchronous diel vertical migrations (DVM) within the upper 100 m. Individuals of behavioral Mode 2, stayed at ~ 160-200-m depth during the day, and also exhibited synchronized DVM, ascending at dusk and descending at dawn. The smaller individuals of behavioral Mode 3 swam continuously up and down throughout both day and night, yet occurred below Mode 2 individuals in daytime (~ 200 m-bottom), while their vertical range encompassed the entire water column during night. Mode 4 behavior was displayed by large jellyfish located between ~ 130 m and the bottom. These animals shifted between remaining motionless and relocating in rapid steps during both day and night. These four main behavioral patterns persisted throughout the registration period, although the synchronously migrating Mode 2 behavior became weaker in spring. This acoustic study has unveiled more diverse migration behaviors than previously derived from net sampling and remote-operated vehicles methods and emphasizes the importance of studying individuals. DVM is complex because individuals in a plankton population may simultaneously engage in a range of various contrasting behaviors.
dc.publisherWiley
dc.relation.urlhttp://doi.wiley.com/10.4319/lo.2011.56.6.2189
dc.rightsArchived with thanks to Limnology and Oceanography
dc.titleBeyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalLimnology and Oceanography
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Biology, University of Oslo, Norway
kaust.personKaartvedt, Stein
kaust.personRøstad, Anders
kaust.personKlevjer, Thor Aleksander
refterms.dateFOA2018-06-14T06:39:19Z
dc.date.published-online2011-10-22
dc.date.published-print2011-11


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