Beyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish

Handle URI:
http://hdl.handle.net/10754/555798
Title:
Beyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish
Authors:
Kaartvedt, Stein ( 0000-0002-8793-2948 ) ; Titelman, Josefin; Røstad, Anders ( 0000-0002-2512-9033 ) ; Klevjer, Thor A.
Abstract:
We 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.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Beyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish 2011, 56 (6):2189 Limnology and Oceanography
Journal:
Limnology and Oceanography
Issue Date:
Nov-2011
DOI:
10.4319/lo.2011.56.6.2189
Type:
Article
ISSN:
00243590
Additional Links:
http://doi.wiley.com/10.4319/lo.2011.56.6.2189
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorKaartvedt, Steinen
dc.contributor.authorTitelman, Josefinen
dc.contributor.authorRøstad, Andersen
dc.contributor.authorKlevjer, Thor A.en
dc.date.accessioned2015-05-26T08:05:24Zen
dc.date.available2015-05-26T08:05:24Zen
dc.date.issued2011-11en
dc.identifier.citationBeyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfish 2011, 56 (6):2189 Limnology and Oceanographyen
dc.identifier.issn00243590en
dc.identifier.doi10.4319/lo.2011.56.6.2189en
dc.identifier.urihttp://hdl.handle.net/10754/555798en
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.en
dc.relation.urlhttp://doi.wiley.com/10.4319/lo.2011.56.6.2189en
dc.rightsArchived with thanks to Limnology and Oceanographyen
dc.titleBeyond the average: Diverse individual migration patterns in a population of mesopelagic jellyfishen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalLimnology and Oceanographyen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Biology, University of Oslo, Norwayen
kaust.authorKaartvedt, Steinen
kaust.authorRøstad, Andersen
kaust.authorKlevjer, Thor Aleksanderen
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