Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Hays, G. C.
Right arrow Articles by Frears, S. L.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hays, G. C.
Right arrow Articles by Frears, S. L.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 20 | NUMBER 4 | PAGES 727-737 | 1998
© Oxford University Press

research-article

Diet changes in the carbon and nitrogen content of the copepod Metridia lucens

Graeme C. Hays, Peter I. Webb1 and Sara L. Frears1

School of Biological Sciences; University of Wales Swansea Singleton Park, Swansea SA2 8PP, UK 1Department of Zoology, University of Otago P0 Box 56, Dunedin, New Zealand

Received on September 30, 1997; accepted on November 28, 1997 Diel changes in the near-surface (0–50 m) abundance, prosome length, and carbon and nitrogen content of the copepod Metridia lucens were measured in Deep Cove, Doubtful Sound, New Zealand (45°27'S, 167°9'E) between 3 and 6 September 1996. Metridia lucens showed maximal abundance a night, suggesting a pattern of normal diel vertical migration (DVM). The change in abundance suggested that the descent of the population occurred –1 h prior to dawn and the ascent –1 h after dusk. However, a proportion of the population remained near the surface during the day. Although there was no diel pattern in the prosome length of M.lucens collected near the surface, there was a marked diel cycle in the measured carbon and nitrogen contents, with maximal values being measured towards the end of the night prior to the downward migration. We suggest that this diet cycle in the measured elemental content was caused by DVM occurring more strongly in those animals which had a better body condition, i.e. a higher elemental content per unit length.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J PLANKTON RESHome page
H. Vestheim, S. Kaartvedt, and B. Edvardsen
State-dependent vertical distribution of the carnivore copepod Pareuchaeta norvegica
J. Plankton Res., January 1, 2005; 27(1): 19 - 26.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.