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JPR Advance Access originally published online on June 26, 2009
Journal of Plankton Research 2009 31(9):1089-1100; doi:10.1093/plankt/fbp047
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© The Author 2009. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Acrocalanus gracilis (Copepoda: Calanoida) development and production in the Timor Sea

Luiz Felipe Mendes Gusmão1,2,* and A. David McKinnon1

1 Australian Institute of Marine Science, PMB No 3, Townsville MC, Queensland 4810, Australia 2 School of Tropical and Marine Biology, AIMS@JCU, and Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811, Australia

* CORRESPONDING AUTHOR: gusmao.lfm{at}gmail.com

Received on October 8, 2008; accepted on May 27, 2009


  Abstract

We investigated the juvenile development of the calanoid copepod Acrocalanus gracilis in the Timor Sea. The development was characterized by the calculation of stage-specific duration, median development time, moulting period duration, moult and growth rates. The morphometry of the experimental and wild populations were compared. Food concentrations in the experiment were lower than those in the field, and resulted in smaller animals than those in the field. Somatic growth (0.44 day–1) was log-linear throughout the development, but moulting rates slowed with time. The development of A. gracilis was similar to other paracalanids, and conforms to the equiproportional model. Trophic resources seem to play an important role in controlling the developmental features and morphometry of Acrocalanus in tropical environments.

Corresponding editor: Mark J. Gibbons


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