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Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass

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Title: Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass
Authors: Yamaguchi, Atsushi Browse this author →KAKEN DB
Ashjian, Carin J. Browse this author
Campbell, Robert G. Browse this author
Abe, Yoshiyuki Browse this author
Keywords: copepods
vertical distribution
mesopelagic
Paraeuchaeta
moltincrement
Arctic
Issue Date: 5-Nov-2019
Publisher: Oxford University Press
Journal Title: Journal of plankton research
Volume: 41
Issue: 5
Start Page: 791
End Page: 797
Publisher DOI: 10.1093/plankt/fbz051
Abstract: Two dominant mesopelagic carnivorous Paraeuchaeta copepods, Paraeuchaeta glacialis in the western Arctic Ocean and Paraeuchaeta elongata in the western subarctic Pacific, exhibited specialized ontogenetic vertical migration patterns with deeper occurrences of early copepodids (C1) and adults (C6F/M) and shallower occurrences of older copepodids C3-C5. Molt increments in body masses (wet, dry and ash-free dry masses) exhibited highly significant negative correlations with habitat depth. These facts suggest that both Paraeuchaeta species spend their reproductive (C6F/M) and early developmental (C1) stages in deeper layers to avoid predation and migrate upwards to where prey is abundant during the middle-late copepodid stages (C3-C5) to achieve greater mass growth.
Rights: This is a pre-copyedited, author-produced version of an article accepted for publication in Journal of Plankton Research following peer review. The version of record Atsushi Yamaguchi, Carin J Ashjian, Robert G Campbell, Yoshiyuki Abe, Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass, Journal of Plankton Research, Volume 41, Issue 5, September 2019, Pages 791–797 is available online at: https://doi.org/10.1093/plankt/fbz051.
Type: article (author version)
URI: http://hdl.handle.net/2115/79702
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山口 篤

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