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JPR Advance Access published online on July 23, 2004
Journal of Plankton Research, doi:10.1093/plankt/fbh127
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Received January 22, 2004
Accepted July 13, 2004

Article

Complete larval and early juvenile development of the mangrove crab Perisesarma fasciatum (Crustacea: Brachyura: Sesarmidae) from Singapore, with a larval comparison of Parasesarma and Perisesarma

Guillermo Guerao 1*, Klaus Anger 2, Uwe Nettelmann 2, Christoph D. Schubart 3

1 Departament de Biologia Animal (Artròpodes), Facultat de Biologia (U.B.), Av. Diagonal 645, 08028 Barcelona, Spain.
2 Alfred-Wegener-Institut für Polar- und Meeresforschung; Biologische Anstalt Helgoland, Meeresstation, 27498 Helgoland, Germany.
3 Biologie 1: Zoologie, Universität Regensburg, 93040 Regensburg, Germany.

* To whom correspondence should be addressed. E-mail: gguerao{at}pie.xtec.es.


  Abstract

The complete larval development of the sesarmid crab Perisesarma fasciatum (Lanchester, 1900) from Singapore was obtained from laboratory culture. All four zoeal stages, the megalopa and the first crab stage are described and illustrated. The morphological characters of the larvae of Perisesarma fasciatum are compared with those of other known larvae of the genera Perisesarma and Parasesarma. The larval morphology of Perisesarma fasciatum clearly presents the typical combination of features that characterise sesarmid larvae. Overall, larval stages are very similar in Perisesarma and Parasesarma and it is impossible to distinguish these two genera by larval morphology.


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