carapace


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Related to carapace: gastric mill, Swimmerets

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 ?
(2008) observed that the proportion of meat yield was 26.0% for males and 19.3% for females, which is relative to the weight of the whole animal, and that the harvest practiced by fishermen excluded ovigerous females and specimens with a carapace width of < 6.0 cm, which may indicate that the community is aware of the need to preserve the species.
Seven morphometric characteristics were measured for each specimen (see Simon & Stewart 2014) --carapace length (CL), postorbital carapace length (POCL) [from the anterior margin of postorbital spine to the posterior margin of the carapace], carapace width (CW), carapace depth (CD), chelae length (ChL), chelae width (ChW), and abdomen width (ABW).
The data analyzed are x and y coordinates of the 22 landmark points of the dorsal carapace of the redclawed crabs.
The results by claw shell and carapace chitosan were not within the reported values in literature.
A power equation was used to describe the relationship between Panopeus herbstii carapace width (mm) and total dry weight (g) for the feeding crabs and 14 other mud crabs that were collected concurrently from Clambank Landing.
pelagicus from the different growth stages (zoea, megalopa, first crab, and adult) and from wild adults (5-7 cm carapace width) were dialyzed overnight against 50 mM Tris-HCl buffer pH 8.2 before use for determining in vitro digestibility.
Specifically, adhesive should be applied around the transmitter to cover a larger surface area and increase the angle between the PTT and carapace (Fig.
I determined age using annuli on scutes from the carapace and plastron (Bury and Germano, 1998; Germano and Bury, 1998).
sinensis group now contains 18 species from the Indo-West Pacific (Osawa 2018; Werding and Hiller 2019) and is primary characterized by the carapace without spines on the lateral margins, the chela with various degrees of setation on the dorso-anterior surface and the dactyli of the ambulatory legs each with the dorsal claw much smaller than the ventral.
falcatus was about 30 centimeters long and had a carapace shaped like a shield or spaceship on its back.