Holothuroidea

(redirected from holothuroid)
Also found in: Thesaurus, Encyclopedia.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Holothuroidea - class of echinoderms including the sea cucumbers
Echinodermata, phylum Echinodermata - radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers
holothurian, sea cucumber - echinoderm having a flexible sausage-shaped body, tentacles surrounding the mouth and tube feet; free-living mud feeders
family Holothuridae, Holothuridae - a family of Holothuroidea
class - (biology) a taxonomic group containing one or more orders
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Biometry, bathymetric distribution, and reproductive cycle of the holothuroid Holothuria tubulosa (Echinodermata) from the Mediterranean seagrass beds.
It is well known that holothuroid tissues contain a high quantity of saponins (Nigrelli, 1952; Van Dyck et al, 2009, 2010), secondary metabolites that act as a predator deterrent.
Holothuroid sea cucumbers provide vital (and often overlooked) ecological services in the habitats they occupy.
11 9:20 HOLOTHUROID AND ECHINOID AGGREGATE BEHAVIOR ON THE EASTERN PACIFIC ABYSSAL PLAIN.
Biochemical and energetic composition of bathyal achinoids and an asteroid, holothuroid and crinoid from the Bahamas.
[VO.sub.2] ([micro]l/g/h) of three mechanical states of catch Connective tissues [double dagger] Standard Stiff Soft Echinoid C A 2.84 [+ or 4.18 [+ or [paragraph] -] 1.08 -] 2.04 (10) (10) * 3.26 [+ or 7.35 [+ or -] 1.36 -] 3.31 (22) (22) ** Holothuroid 1.41 [+ or 2.21 [+ or 12.52 [+ or dermis -] 0.60 -] 0.80 -] 4.47 (24) (12) (12) [double [double [double dagger] dagger] dagger] Asteroid 0.56 [+ or 0.78 [+ or dermis -] 0.12 -] 0.19 (11) (11) [section] [section] Asteroid 12.44 [+ 29.30 [+ muscle# or -] or -] 5.54 (1O) 17.09 [section] (10) [section] [dagger] Values are the arithmetic means [+ or -] S.D.
Similarly, in the holothuroid Eupentacta fraudatrix, 20 psu marked the lower salinity limit for successful fertilization (Kashenko, 2000).
Similar results were reported for echinoid and holothuroid metamorphosis (Chia and Burke, 1978; Burke et al., 2006; Nakano et al., 2006; Katow et al., 2009).
The structures reported in this study have been seen only in holothuroid echinoderms.
It thus appears that a dipleurula-type larva with single ciliary band topology, as seen in the holothuroid auricularia and the hemichordate tornaria, is a basal feature of the Ambulacraria.
Evidence of matrotrophy in the viviparous holothuroid echinoderm Synaptula hydriformis.