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JPR Advance Access originally published online on September 14, 2005
Journal of Plankton Research 2005 27(9):951-956; 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@oxfordjournals.org.

SHORT COMMUNICATION

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

R. Rapoza1, D. Novak2 and J. H. Costello2,*

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

* Corresponding Author: costello{at}providence.edu

Received May 18, 2005; accepted in principle July 26, 2005; accepted for publication September 5 2005; published online September 14, 2005
Communicating editor: K.J. Flynn

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 M. leidyi.


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