alexa Morphology, Distribution and Comparative Functional Morphology of Setae on the Carapace of the Florida Speck Claw Decorator Crab Microphrys bicornutus (Decapoda, Brachyura) | Abstract
ISSN: 2155-9910

Journal of Marine Science: Research & Development
Open Access

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Research Article

Morphology, Distribution and Comparative Functional Morphology of Setae on the Carapace of the Florida Speck Claw Decorator Crab Microphrys bicornutus (Decapoda, Brachyura)

Monique A. Salazar and W. Randy Brooks*

Department of Biological Sciences, Florida Atlantic University, Boca Raton, Florida, USA

*Corresponding Author:
Dr. W. Randy Brooks
Department of Biological Sciences
Charles E. Schmidt College of Science
Florida Atlantic University, 777 Glades Road
Boca Raton FL, 33431, USA
Tel: (561) 297-3320
Fax: (561) 297- 2749
E-mail: [email protected]

Received date: May 07, 2012; Accepted date: July 18, 2012; Published date: July 10, 2012

Citation: Salazar MA, Brooks WR (2012) Morphology, Distribution and Comparative Functional Morphology of Setae on the Carapace of the Florida Speck Claw Decorator Crab Microphrys bicornutus (Decapoda, Brachyura). J Marine Sci Res Dev 2:109. doi:10.4172/2155-9910.1000109

Copyright: © 2012 Salazar MA et al., This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Some species of crab are known to “decorate” or attach various materials to their exoskeleton. Little is known about the functional morphology that facilitates such activities. In this study, ultrastructural morphology and distribution of setae on the exoskeleton of the Florida Speck Claw Decorator Crab Microphrys bicornutus were examined using scanning electron microscopy. Eleven morphologically complex structures were identified and mapped on the exoskeleton. Hooked setae were the primary structures used to attach algae to the crab’s body, as confirmed by ablation experiments in which successful decoration by the crab was practically nonexistent. Ten additional setal structures were present, including pappose, cuspidate, connate, plumose, plumodenticulate, two types of serrate, and simple setae. Within the set of these 10 additional setae, two novel types of setae were discovered and possible nomenclature suggested. On the basis of location and the high degree of morphological variation exhibited among these structures, a primary sensory function may be inferred with mechanical decoration playing a minimal role.

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