Ontogenetic vertical migration of the mesopelagic carnivorous copepod Paraeuchaeta spp. is related to their increase in body mass-Reference-Cited by-同舟云学术

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

Published:2019-09 Issue:5 Volume:41 Page:791-797
ISSN:0142-7873
Container-title:Journal of Plankton Research
language:en
Short-container-title:

Author:

Yamaguchi Atsushi¹²³^ORCID,Ashjian Carin J¹,Campbell Robert G⁴,Abe Yoshiyuki⁵

Affiliation:

1. BIOLOGY DEPARTMENT, WOODS HOLE OCEANOGRAPHIC INSTITUTION, 266 WOODS HOLE RD., WOODS HOLE, MA 02543, USA

2. GRADUATE SCHOOL OF FISHERIES SCIENCES, HOKKAIDO UNIVERSITY, 3-1-1 MINATO-CHO, HAKODATE 041-8611, Japan

3. ARCTIC RESEARCH CENTER, HOKKAIDO UNIVERSITY, KITA-21 NISHI-11 KITA-KU, SAPPORO 001-0021, Japan

4. GRADUATE SCHOOL OF OCEANOGRAPHY, UNIVERSITY OF RHODE ISLAND, NARRAGANSETT, RI 02882, USA

5. ATMOSPHERE AND OCEAN RESEARCH INSTITUTE, THE UNIVERSITY OF TOKYO, 5-1-5, KASHIWANOHA, KASHIWA-SHI, CHIBA 277-8564, Japan

Abstract

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.

Funder

US National Science Foundation

Grant-in-Aid for Scientific Research

Japan Society for the Promotion of Science

Arctic Challenge for Sustainability

Publisher

Oxford University Press (OUP)

Subject

Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics

Link

http://academic.oup.com/plankt/article-pdf/41/5/791/31061726/fbz051.pdf

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