Vertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) in the Red Sea

Handle URI:
http://hdl.handle.net/10754/552460
Title:
Vertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) in the Red Sea
Authors:
Dypvik, Eivind; Kaartvedt, Stein ( 0000-0002-8793-2948 )
Abstract:
The vertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) were studied by use of a hull-mounted 38 kHz echo sounder, ROV-deployments and net-sampling at two locations (∼24°48′N, ∼36°15′E and ∼21°27′N, ∼38°5′E) in the central Red Sea. The mesopelagic zone of the Red Sea represents an unusual environment with very high temperatures (∼22 °C) and low zooplankton concentrations (<10 individuals m−3 below 600 m). The skinnycheek lanternfish performed normal diel vertical migration from ∼500 to 750 m during daytime to the epipelagic zone (upper ∼200 m) at night. A strict feeding periodicity occurred; with the skinnycheek lanternfish foraging on zooplankton throughout the night, while rapidly digesting the preceding nocturnal meal in the warm mesopelagic region. We hypothesize that the constrained epipelagic distribution of zooplankton and the unusual warm waters of the Red Sea force the whole population to ascend and feed in epipelagic waters every night, as the prey-ration eaten each night is fully digested at mesopelagic depths during daytime.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Vertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) in the Red Sea 2013, 72:9 Deep Sea Research Part I: Oceanographic Research Papers
Publisher:
Elsevier BV
Journal:
Deep Sea Research Part I: Oceanographic Research Papers
Issue Date:
13-Nov-2012
DOI:
10.1016/j.dsr.2012.10.012
Type:
Article
ISSN:
09670637
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0967063712002105
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorDypvik, Eivinden
dc.contributor.authorKaartvedt, Steinen
dc.date.accessioned2015-05-07T14:15:16Zen
dc.date.available2015-05-07T14:15:16Zen
dc.date.issued2012-11-13en
dc.identifier.citationVertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) in the Red Sea 2013, 72:9 Deep Sea Research Part I: Oceanographic Research Papersen
dc.identifier.issn09670637en
dc.identifier.doi10.1016/j.dsr.2012.10.012en
dc.identifier.urihttp://hdl.handle.net/10754/552460en
dc.description.abstractThe vertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) were studied by use of a hull-mounted 38 kHz echo sounder, ROV-deployments and net-sampling at two locations (∼24°48′N, ∼36°15′E and ∼21°27′N, ∼38°5′E) in the central Red Sea. The mesopelagic zone of the Red Sea represents an unusual environment with very high temperatures (∼22 °C) and low zooplankton concentrations (<10 individuals m−3 below 600 m). The skinnycheek lanternfish performed normal diel vertical migration from ∼500 to 750 m during daytime to the epipelagic zone (upper ∼200 m) at night. A strict feeding periodicity occurred; with the skinnycheek lanternfish foraging on zooplankton throughout the night, while rapidly digesting the preceding nocturnal meal in the warm mesopelagic region. We hypothesize that the constrained epipelagic distribution of zooplankton and the unusual warm waters of the Red Sea force the whole population to ascend and feed in epipelagic waters every night, as the prey-ration eaten each night is fully digested at mesopelagic depths during daytime.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0967063712002105en
dc.rightsArchived with thanks to Deep Sea Research Part I: Oceanographic Research Papers. http://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectBenthosema pterotumen
dc.subjectSkinnycheek lanternfishen
dc.subjectAcoustic scattering layersen
dc.subjectDiel vertical migrationen
dc.subjectFeeding periodicityen
dc.titleVertical migration and diel feeding periodicity of the skinnycheek lanternfish (Benthosema pterotum) in the Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalDeep Sea Research Part I: Oceanographic Research Papersen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorDypvik, Eivinden
kaust.authorKaartvedt, Steinen
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