carapace

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carapace

(kâr`əpās), shield, or shell covering, found over all or part of the anterior dorsal portion of an animal. In lobsters, shrimps, crayfish, and crabs, the carapace is the part of the exoskeleton that covers the head and thorax and protects the dorsal and lateral surfaces. In many crustaceans, the term carapace is also used to describe the hard, protective covering of the cephalothorax, as that of the horseshoe crab. The carapace of a turtle's shell is composed of expanded ribs and vertebrae overlain by dermal plates and horny scales.
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carapace

[′kar·ə‚pās]
(geology)
The upper normal limb of a fold having an almost horizontal axial plane.
(invertebrate zoology)
A dorsolateral, chitinous case covering the cephalothorax of many arthropods.
(vertebrate zoology)
The bony, dorsal part of a turtle shell.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

carapace

the thick hard shield, made of chitin or bone, that covers part of the body of crabs, lobsters, tortoises, etc.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
While the study of epizoic diatoms growing on the carapaces of marine turtles has been advanced considerably in recent years (Frick & Pfaller, 2013; Majewska, Santoro, Bolanos, Chaves, & De Stefano, 2015), such studies for freshwater turtles have remained scarce, and even more so in the Neotropical region, where epizoic diatoms in aquatic ecosystems have only been studied by Wetzel, van de Vijuer, Cox, and Ector (2010); Wetzel, van de Vijuer, Cox, Bicudo, and Ector (2012).
Individuals from Bahia and Rio Grande do Norte that occupy forest beyond mangrove areas with organic rich soil formed a sister branch in the cluster analyses of carapaces (Fig.
In the present study, we applied geometric morphometries techniques for Brazilian aeglid crabs aiming a better comprehension of intra and interspecific variability in carapace morphology, relative to distinct lineages.
Highest weight loss (28.26%) for crab carapaces was due to loss of pigments present on the shell.
Crabs were wet weighed (W) in the laboratory with a digital scale (0.001g) and the carapace length (CL) and width (CW) were measured with a digital caliper (1 mm).
ESD is characterized by severe, deep erosions of the cuticle that extend laterally and, more characteristic of this disease than others, spreads irregularly over the dorsal carapace of the animal (Smolowitz et al.
In a separate experiment, we compared the number of bacteria present on healthy carapaces and in lesions.
Gross examination of carapace pieces showed that the carapaces of healthy animals showed no degradation, while samples from infected animals were severely eroded.
There, far too often, buildings are vulgar gestures striving for recognition at all costs, with the organizations they contain so constrained within fashionable carapaces that the only way in which they can change and grow is to knock down the structures and start again.