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.

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.

carapace

the thick hard shield, made of chitin or bone, that covers part of the body of crabs, lobsters, tortoises, etc.
References in periodicals archive ?
Coloration (Figs 121-124): Carapace low, dark brown, with black eye field, narrow median light-brown stripe and small patch behind AME, with two lateral yellow bands covered with white adpressed hairs.
Whereas, crab claw shells and crab carapace have 244% and 270% water binding capacities, respectively, while working on five commercial chitosans from shrimp and crab reported the range for WBC as 58% to 805%, which satisfies the low results given by crab claw shells and crab carapace chitosan samples in Fig.
Carapace dark orange-red with black mottling, with granulose surface and sparse white feathery setae (Fig.
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.
guanhumi: Graphs with all data included for each of the burrow measuring methods and carapace length of crabs are shown in Fig.
The carapace is perforated by numerous pores which appear as simple points and which are associated to sensory hairs or short sensillas.
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).
The species also shares similarities in the internal and external epigynal structures, specifically the spermathecal shape, as well as similarities in the carapace shape, eye location, and leg length.
Instead of a solid carapace (shell) like modern turtles, the retro reptile had half a shell, formed out of bony extensions of the backbone and ribs.
In "The Secret Life of Snapping Turtles," in the January/February issue, the author states, "If you must pick one up, grab hold of the carapace behind the head with one hand and hold the rear of the carapace above the tail with the other.
We have recently discovered two modern death assemblages containing dead Chrysemys picta (painted turtle), and with a view toward comparing these sites with fossil turtle death assemblages, we recorded position, orientation of the carapace (upside down or right-side up), presence or absence of non-shell elements and degree of shell disarticulation.