Skip Navigation



JPR Advance Access published online on October 19, 2005
Journal of Plankton Research, doi:10.1093/plankt/fbi087
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
27/10/1003    most recent
fbi087v1
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 Jiang, H.
Right arrow Articles by Strickler, J. R.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Jiang, H.
Right arrow Articles by Strickler, J. R.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received August 10, 2005
Accepted October 10, 2005

Article

Mass density contrast in relation to the feeding currents in calanoid copepods

Houshuo Jiang 1* and J. Rudi Strickler 2

1 Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA
2 Great Lakes WATER Institute, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53204, USA

* To whom correspondence should be addressed.
Houshuo Jiang, E-mail: hsjiang{at}whoi.edu


  Abstract

Theoretical analyses show that positively buoyant copepods are able to generate feeding currents by adopting upside-down body positions and pushing water upward. Thus, the excess buoyancy acting on the copepods will be balanced and cone-shaped feeding currents generated to transport water to the capture areas. The intensities of the feeding currents, which can be measured in the present modeling study by calculating the volumetric flux going through the capture areas, are proportional to the mass density contrasts between the copepods and the ambient seawater. The mass density contrasts may vary spatially and temporally depending on copepod body contents and on the properties of the seawater immediately surrounding them. We focus on the case where the mass density contrast between a wax ester-rich copepod and its ambient seawater can vary strongly with depth because wax esters are more compressible and 6 to 10 times more thermally expansible than seawater. These theoretical analyses show that the intensities of the feeding currents generated by wax ester-rich copepods vary strongly with depth. Our conclusions from these theoretical analyses need to be tested by direct observations.

Communicating Editor: RP Harris
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. W. Visser, P. Mariani, and S. Pigolotti
Swimming in turbulence: zooplankton fitness in terms of foraging efficiency and predation risk
J. Plankton Res., February 1, 2009; 31(2): 121 - 133.
[Abstract] [Full Text] [PDF]

Home page
 Phil Trans R Soc BHome page
H. Jiang and J. R. Strickler
Copepod flow modes and modulation: a modelling study of the water currents produced by an unsteadily swimming copepod
Phil Trans R Soc B, November 29, 2007; 362(1487): 1959 - 1971.
[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.