Skip Navigation



JPR Advance Access published online on August 2, 2006
Journal of Plankton Research, doi:10.1093/plankt/fbl029
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
28/10/919    most recent
fbl029v1
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 Koski, M.
Right arrow Articles by Jakobsen, H. H.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Koski, M.
Right arrow Articles by Jakobsen, H. H.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received May 2, 2006
Accepted July 28, 2006

Article

Life-Stage Specific Differences in Exploitation of Food Mixtures: Diet Mixing Enhances Copepod Egg Production But Not Juvenile Development

Marja Koski 1 *, Wim Klein Breteler 2, Nelleke Schogt 2, Santiago Gonzalez 2, and Hans Henrik Jakobsen 1

1 Danish Institute for Fisheries Research, Kavalergården 6, DK-2920 Charlottenlund, Denmark
2 Royal Netherlands Institute of Sea Research, P.O.Box 59, NL-1790 AB Den Burg, Texel, The Netherlands

* To whom correspondence should be addressed.
Marja Koski, E-mail: mak{at}dfu.min.dk


  Abstract

Development, egg production and hatching success of the calanoid copepods Temora longicornis and Pseudocalanus elongatus were measured in food mixtures to test their ability to obtain a complete nutrition by combining different nutritionally poor food species. In all the food mixtures used, the copepods failed to moult past the first copepodite stage, and the mortality was high. In sharp contrast, mixing two nutritionally poor food species often resulted in egg production which was not significantly different from nutritionally high quality food, although hatching success in many mixtures was low. Whereas egg production was significantly correlated to particulate organic nitrogen in the diet, and independent of the highly unsaturated fatty acids EPA and DHA, hatching increased with increasing DHA and EPA concentration. Growth and juvenile mortality were, however, independent of either nitrogen or highly unsaturated fatty acids in the diet. Our results show that adult copepods are effective in combining their nutrition from several food sources, whereas juveniles are not. We suggest that there are species- and life-stage specific differences in nutritional requirements and / or in the ability to digest and / or assimilate essential nutrients from food mixtures, which may significantly contribute to the success of copepod populations in nature.

Communicating Editor: KJ Flynn


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
A. B. S. Diekmann, M. A. Peck, L. Holste, M. A. St John, and R. W. Campbell
Variation in diatom biochemical composition during a simulated bloom and its effect on copepod production
J. Plankton Res., November 1, 2009; 31(11): 1391 - 1405.
[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.