brittle star


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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 ?
Pelagic larvae, such as lecithotrophic larvae produced by the brittle star Astrotoma agassizii Lyman, 1875, have been recovered from the Ross Sea with mitochondrial haplotypes matching those from the Antarctic Peninsula, presumably via dispersal by the ACC (Heimeier et al.
Results: The morphological analysis and MTT assay exhibited that the brittle star methanol extract can exert dose dependent inhibitory effect on cells viability ([IC.
However, the narrator's perspective gives Brittle Star a twist that calls all assumptions into question.
geminata is mentioned by Clark (1940) as a long-armed brittle star that prefers muddy bottoms in the Gulf of Fonseca (El Salvador), the Gulf of Nicoya estuary and also in Panama, from the lower intertidal to about 10m depth.
These recently discovered brittle star fields in the dune areas now represent a new benthic community for consideration in the management of inter-reef habitats in the Marine Park.
In contrast, brittle stars and brachiopods were dense in low-relief mixed rock but rare or absent in low-relief mixed sediment.
Brittle stars were removed from the substrate, counted, and the volume of the substrate was estimated by measuring displacement volume.
But biologists have long noted the ability of some brittle star species to react to light and avoid predators.
Bacteria living on the brittle star give off chemicals to kill other bugs which invade their territory.
From under a rock, he fishes out a nocturnal brittle star.
In this study, total polysaccharide from brittle star [Ophiocoma erinaceus (O.
e new starsh enterprise will allow you to see new species including the common star sh, brittle star, chocolate knobbed and red knobbed.