Ophiuroidea

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Related to ophiuroids: class Ophiuroidea, Brittle stars, echinoids

Ophiuroidea

a class of ECHINODERMS, comprising the brittle stars.
References in periodicals archive ?
Similar 2b-RAD work on the circumpolar ophiuroid Ophionotus victoriae revealed four distinct populations that were geographically structured and may represent multiple species (Galaska et al.
Other three species are also considered due to significant differences in density between zones: the ophiuroids Ophiura lymani (Ljungman, 1870), Austrocidciris canaliculata (A.
Three of the five most widely distributed taxa in the present study area, the ophiuroids Ophiocten sericeum and Ophiacantha bidentata and the onuphid polychaete Nothria conchylega, are common throughout the Arctic shelves (Piepenburg et al.
2] was the same between the two studies, our biomass was higher because NCC had ophiuroids throughout the sampling period, adding about 4 g [m.
Ophiuroids were noticeable in winter, especially at station 8, where Hemipholis elongata dominated with a number of 296 ind [m.
Edwards and Lubbock (1983) registered the presence of only two specimens of the urchin Eucidaris clavata (Mortensen) and many of the small ophiuroids Ophiactis savignyi (Muller and Troschel) in shallow waters.
In the southern sector, a general lower abundance of scallops and predators, together with higher density of ophiuroids, in comparison with the other sector.
The rest of megafauna were constituted by six species of crustaceans Heterocarpus reedi (n = 330), Projasus bahamondei (n = 130), Munida propinqua (n = 8), Uroptychus parvulus (abundance no recorded), Chirostylus hendersoni (n = 32) and the stomatopod Pterygosquilla armata (n = 47), two species of ophiuroids (Gorgonocephalus chilensis and Astrotoma agassizi; n = 14 and 102, respectively), an unknown species of asteroid (n = 1) and one species of Anthozoa Hormathia cf.
Cuttlefish feed predominantly on fishes and crustaceans (Lipinski, 1992) and therefore the lack of any strong association with ophiuroids is to be expected.
Ophiuroids can autotomize arms and the aboral portion of the disc (Litvinova and Zharkova, 1977; Dobson, 1985; Dobson and Turner, 1989; Charlina et al.
Carter and Steele (1982b), using their own results and data from nonconcomitant studies conducted at different sites in Newfoundland (Squires, 1970; Ennis, 1973), have suggested that lobsters of 12-73 mm CL consume sea urchins, ophiuroids, and mussels more frequently than larger (adult) lobsters.