Crustacea

(redirected from Crustaceans)
Also found in: Thesaurus, Medical, Encyclopedia.

crustacea

(krʌsˈteɪʃə)
pl n
a collective term for members of the Crustacea class of (mainly aquatic) mandibulate arthropods, characterized by their usually chitinous exoskeletons
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.crustacea - class of mandibulate arthropods including: lobstersCrustacea - class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas
Arthropoda, phylum Arthropoda - jointed-foot invertebrates: arachnids; crustaceans; insects; millipedes; centipedes
crustacean - any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
Malacostraca, subclass Malacostraca - largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies
order Stomatopoda, Stomatopoda - mantis shrimps
Entomostraca, subclass Entomostraca - in some older classifications includes the Branchiopoda and Copepoda and Ostracoda and Cirripedia; no longer in technical use
Branchiopoda, subclass Branchiopoda - primitive aquatic mainly freshwater crustaceans: fairy shrimps; brine shrimps; tadpole shrimps; can shrimps; water fleas
Copepoda, subclass Copepoda - minute planktonic or parasitic crustaceans
class - (biology) a taxonomic group containing one or more orders
References in classic literature ?
In certain crustaceans, for instance, there is a double cornea, the inner one divided into facets, within each of which there is a lens-shaped swelling.
Stuffed serpents of the most objectionable and horrid kind; giant insects from the tropics, fearsome in every detail; fishes and crustaceans covered with weird spikes; dried octopuses of great size.
Captain Nemo pointed out the hideous crustacean, which a blow from the butt end of the gun knocked over, and I saw the horrible claws of the monster writhe in terrible convulsions.
A small crustacean very much resembling the lobster, but less indigestible.
The fact that present-day birds - the only surviving dinosaurs - increase their protein and calcium intake during breeding season to improve their chances of successful reproduction also led credence to Chin's theory about why the hadrosaurs could have been eating crustaceans despite their otherwise vegetarian diet.
It will be an offence if fisherman fails to throw back or tries to sell under sized crustaceans, the Daily Post understands.
Dr Sloan, who used to work in the Natural History Museum, is now contacting an expert on British crustaceans to discuss it further.
Rebecca Evans said: "The crustacean fisheries are crucial to the Welsh fishing industry, with PS3.8m worth of crustaceans landed in Wales in 2012.
This fifth volume focuses on Crustaceans, half of it devoted to the morphology and development of the central nervous system.
Professor Bob Elwood said the crustaceans were willing to sacrifice a dark shelter to avoid further jolts.
The crustaceans are thought to live to more than 100, but until now there has been no way to accurately work out their age.
In these crustaceans, the left and right claws might be very different sizes--and the larger one isn't necessarily stronger, researchers report online March 14 in Biology Letters.