carapace

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carapace

(kăr′ə-pās′)
n.
Zoology A hard bony or chitinous outer covering, such as the fused dorsal plates of a turtle or the portion of the exoskeleton covering the head and thorax of a crustacean.

carapace

[kar′əpās]
Etymology: Sp, carapacho, hard shell
a horny shield or shell covering the dorsal surface of an animal such as a turtle.

carapace

the part of the exoskeleton of a CRUSTACEAN that spreads over the head and thorax; in other animals, e.g. the tortoise, the carapace is the dorsal covering of bony plates.

carapace

the dorsal shell of turtles and tortoises. Abnormalities are caused by trauma, dietary deficiencies (particularly nutritional hyperparathyroidism), infections, environmental factors and tumors.
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Carapace of the tortoise. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004
References in periodicals archive ?
We report data from two partial carapaces, postcranial elements, and a skull recovered from two localities from the Mexican states of Tamaulipas and Tlaxcala (Fig.
Prior to exposure, the lobster carapaces were rinsed with sterilized filtered seawater before filter placement, and the filters were then placed onto the lateral carapace of the lobsters.
Specifically, adhesive should be applied around the transmitter to cover a larger surface area and increase the angle between the PTT and carapace (Fig.
We weighed each turtle with a spring balance to the nearest 10 g and measured plastron length, carapace length, width, and height with calipers to the nearest 1 mm.
The carapace is preserved in lateral aspect, which suggests that it was originally laterally compressed and that the sternal region was very narrow.
A turtle carapace fragment from the well known Tunica Hills Locality, West Feliciana Parish, Louisana is referable to the marine genus Caretta.
There are also some differences in relative carapace strength/solidity between the species, with snow crab carapaces being softer (National Fisheries Research and Development Institute 2008).
Contemporary architects like Greg Lynn have built on these theories and, using the techniques pioneered by animation software, have developed a new repertoire of form: Beginning with the idea of the "blob" and more recently experimenting with the forms of complex organisms from butterflies to jellyfish, Lynn has designed coffee sets that interlock like the carapaces of insects and turtles and institutions that unfold from the ground like giant colorful orchids or artichokes.
Mixtures with less clofibric acid resulted in less mortality but cause some daphnia offspring to have malformed carapaces and appendages.
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.
The evidence for a terminal molt include (1) field measurement of 288 adults in Pleasant Bay indicating adults of several age groups have similar size distributions (Shuster 1955), (2) the male pedipalp is transformed at maturity from chelate form to a swollen hook useful for grasping females during amplexus, (3) presence of internal chitinous fibers (trabeculae) in male and female adults, which could interfere with ecdysis (Shuster & Sekiguchi 2003), (4) the observation that slipper shells (Crepidula fornicata) up to 8 y old have been found attached to adult carapaces indicating that molting had not occurred for at least the slipper shell's lifespan (Botton & Ropes 1988a, Grady et al.
The scraped material from healthy carapaces was also suspended in sterile seawater to optical densities similar to those of lesion material suspensions and processed in the fashion similar to that of lesion material.