East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009
-
- Yamaguchi Atsushi
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Homma Tomoe
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Saito Rui
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Matsuno Kohei
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Ueno Hiromichi
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Hirawake Toru
- Graduate School of Fisheries Sciences, Hokkaido University
-
- Imai Ichiro
- Graduate School of Fisheries Sciences, Hokkaido University
Bibliographic Information
- Other Title
-
- East-west differences in population structure and vertical distribution of copepods along 47^|^deg;N in the subarctic Pacific in June 2009
Search this article
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.
Journal
-
- Plankton and Benthos Research
-
Plankton and Benthos Research 8 (3), 116-123, 2013
The Plankton Society of Japan, The Japanese Association of Benthology
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282680240983680
-
- NII Article ID
- 10031185862
-
- NII Book ID
- AA12130745
-
- ISSN
- 1882627X
- 18808247
-
- HANDLE
- 2115/54055
-
- NDL BIB ID
- 024826889
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed