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JPR Advance Access published online on September 14, 2005
Journal of Plankton Research, doi:10.1093/plankt/fbi065
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org
Received May 18, 2005
Accepted September 5, 2005

Article

Life-stage dependent, in situ dietary patterns of the lobate ctenophore Mnemiopsis leidyi Agassiz 1865

R. Rapoza 1, D. Novak 2, and J.H. Costello 2*

1 Biology Department Woods Hole Oceanographic Institution Woods Hole, MA 02543 USA
2 Biology Dept. Providence College Providence, RI 02918-0001 USA

* To whom correspondence should be addressed.
J.H. Costello, E-mail: costello{at}providence.edu


  Abstract

Analysis of in situ gut contents of the ctenophore Mnemiopsis leidyi collected during summer months of 1998 at Woods Hole, MA, USA indicates that dietary changes accompanied development of this zooplankter. The transition from cydippid to lobate morphologies involved a shift from a microplanktonic diet dominated by protists to a metazoan-based diet. Dietary diversity increased rapidly during the transition from cydippid to lobate stage but remained essentially similar through most (>3.0 cm total length) of the lobate stage. These stage-dependent dietary differences may have important implications for understanding population dynamics of Mnemiopsis leidyi.

Communicating Editor: KJ Flynn


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