HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >

East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009

Files in This Item:
Yamaguchi.pdf2.02 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/54055

Title: East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009
Authors: Yamaguchi, Atsushi Browse this author →KAKEN DB
Homma, Tomoe Browse this author
Saito, Rui Browse this author
Matsuno, Kohei Browse this author →KAKEN DB
Ueno, Hiromichi Browse this author →KAKEN DB
Hirawake, Toru Browse this author →KAKEN DB
Imai, Ichiro Browse this author →KAKEN DB
Keywords: Eucalanus
Lipid accumulation
Metridia
Neocalanus
Ontogenetic vertical distribution
Issue Date: Aug-2013
Publisher: Plankton Society of Japan : Japanese Association of Benthology
Journal Title: Plankton & benthos research : a joint journal of the Plankton Society of Japan & the Japanese Association of Benthology
Volume: 8
Issue: 3
Start Page: 116
End Page: 123
Abstract: Stratified zooplankton sampling was conducted in the subarctic Pacific in June 2009 at four stations along 47°N from 0 to 3,000 m depth to evaluate longitudinal changes in population structure and vertical distribution of the dominant copepod species. At the westernmost station (160°E), the population structure of Eucalanus bungii and Metridia pacifica was dominated by early copepodid stages. In E. bungii, nauplii were abundant and adult females had developed ovaries at 160°E, while at the three stations to the east (167°E, 174°E and 179°W), no E. bungii nauplii were collected, and the resting stages were dominant. This suggests the species was reproducing near 160°E and in diapause in the east. In all three Neocalanus species analyzed (N. cristatus, N. flemingeri and N. plumchrus), late copepodid stages were dominant at the eastern three stations. Lipid accumulation in the fifth copepodid stage of Neocalanus spp. was greater in the west than in the east. This probably resulted from better food conditions and lower temperatures in the west, where copepods could consume more food during development than in the east.
Rights: © 2013 The Plankton Society of Japan
Relation: http://www.plankton.jp/PBR/index.html
Type: article
URI: http://hdl.handle.net/2115/54055
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

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

Feedback - Hokkaido University