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Metabolism and chemical composition of zooplankton from 500 to 5,000 m depth of the western subarctic Pacific Ocean

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Title: Metabolism and chemical composition of zooplankton from 500 to 5,000 m depth of the western subarctic Pacific Ocean
Authors: Ikeda, Tsutomu Browse this author →KAKEN DB
Keywords: Chemical composition
Deep-sea zooplankton
Respiration
Subarctic Pacific Ocean
500-5,000 m depth
C:N ratio
Issue Date: Oct-2012
Publisher: Springer Japan
Journal Title: Journal of Oceanography
Volume: 68
Issue: 5
Start Page: 641
End Page: 649
Publisher DOI: 10.1007/s10872-012-0124-x
Abstract: Respiration (=oxygen consumption) rates of 28 zooplankton species belonging to 10 taxa from 500-5,000 m depth of the western subarctic Pacific Ocean were determined as 0.027-0.44 μLO2 mg dry mass^[-1] h^[-1] at in situ temperatures (1.5-3℃), which are 80% lower than the rates of the epipelagic Antarctic zooplankton with similar body mass and at a comparable temperature. In terms of Adjusted Metabolic Rate to 1 mg body N (AMR; μLO2 mg N^[-0.8]h^[-1]) at 1℃, the present results (mean: 1.66) fall well within the range (0.84-3.32) reported for copepods, chaetognaths, and mixed crustaceans from 500-7,000 m in the subarctic Pacific Ocean and Antarctic waters. Judging from their body C:N elemental ratios and ash-free dry mass (=organic matter) data, the major component of organic matter is deduced to be protein (C:N = 3.4-8.1, by mass) for 19 out of 28 species and lipids (C:N = 8.6-13.0) for the remaining 9 species.
Type: article (author version)
URI: http://hdl.handle.net/2115/53446
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: 池田 勉

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