brittle star

(redirected from Brittlestar)
Also found in: Dictionary, Thesaurus, Encyclopedia.

brittle star

any member of the Class Ophiuroidea - Echinoderms which possess usually five slender arms, clearly distinct from the central disc which lacks an anus. The number of arms is more variable than in starfish Class ASTEROIDEA.
References in periodicals archive ?
Neural development of the brittlestar Amphiura filifonnis.
CA at 13 m depth on 22 August 2012; (b) luminescent parazoanthid (Savalia lucifica) attached to the skeleton of a dead California gorgonian (Muricea californica; c) from Abalone Cove, Palos Verdes Peninsula, CA at 17 m depth on 27 March 2015; (d) heart urchin (Lovenict cordiformis) from K.OU Rock, Palos Verdes Peninsula at 15 m depth on 2 October 2013; (e) ringed brittlestar (Ophionereis annulatd) from Honeymoon Cove, Palos Verdes Peninsula at 5 m depth on 22 June 2016.
"Without these astonishing submerged landscapes there simply wouldn't be any fish, let alone fantastic jewel anemones, seahorses, dolphins, brittlestars amongst all the other wild and extraordinary creatures which are part of a healthy marine ecosystem."
TELECOMWORLDWIRE-27 August 2001-Bell Labs to design microlenses based on optics found in brittlestars (C)1994-2001 M2 COMMUNICATIONS LTD http://www.m2.com
To prove that the structures behave as lenses, Aizenberg shined a light through the skeleton of the brittlestar Ophiocoma wendtii.
Studies of the biology of the West Indian copepod Ophiopsyllus reductus (Siphonostomatoida: Cancerillidae) parasitic upon the brittlestar Ophiocomella ophiactoides.
purpuratus has evolved under colder and more acid seawater like that characterizing the southern tips of South America where this species also dominates (Aguirre et al., 2006), then in such conditions this species may survive better by increasing the rates of both calcification and metabolism, as, for example, has been shown recently in the ophiuroid brittlestar Amphiura filiformis (Wood et al., 2008).
Corgan's first contributions to paleontology occurred while a geologist for Sinclair Oil in Alaska, where he described a new species of brittlestar from the Cretaceous of the Yukon, followed by a paleoecological study of Devonian fauna in the region, where he narrowed his interest to mollusks.
Beds of brittlestar starfish - between outer sands and rock reefs lie large gravel areas covered in a mass of brittlestars, a kind of starfish, which are preyed upon by red sunstars.
Since the early 1990s we have documented some unexpected and unprecedented tends, including vast increases in the abundance of the brittlestar Ophiothrix spiculata and related decreases in some sessile invertebrate species.
The population structure of the brittlestar Ophiura sarsi Lutkin in the Gulf of Maine and its trophic relationship to American plaice (Hippoglossoides platessoides Fabricius).