jellyfish

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jel·ly·fish

(jel'ē-fish),
Marine coelenterates (class Hydrozoa) including some poisonous species, notably Physalia, the Portuguese man-of-war; toxin is injected into the skin by nematocysts on the tentacles, causing linear wheals.
Synonym(s): jelly (2)

jellyfish

(jĕl′ē-fĭsh′)
n. pl. jellyfish or jelly·fishes
a. Any of numerous usually free-swimming marine cnidarians of the class Scyphozoa, characteristically having a gelatinous, tentacled, often bell-shaped medusa stage as the dominant phase of its life cycle. Also called true jellyfish.
b. Any of various similar or related cnidarians.

jel·ly·fish

(jel'ē-fish)
Marine coelenterates, including some poisonous species; toxin is injected into the skin by nematocysts on the tentacles, causing linear wheals.

jellyfish

  1. any large medusa of the class Scyphozoa.
  2. the medusoid stages of any coelenterate.

jellyfish

members of the class of aquatic animals the Scyphozoa, the true jellyfishes, in the phylum Cnidaria. All possess cnidia or stings and are capable of causing stings to animals.
References in periodicals archive ?
Recent morphological evidence supports the presence of two separate nerve nets in the subumbrella of scyphomedusae (e.
The distinct and consistent staining of different neuronal populations with tubulin and FMRFamide antibodies suggests a tie to the two primary subumbrellar nerve nets described from behavioral and physiological studies of scyphomedusae (Romanes, 1876, 1878; Horridge, 1956a; Passano, 1965).
In cubomedusae, the FMRFamidergic system in the subumbrella is almost exclusively contained within the rhopalia and nerve ring, without the diffuse nerve net organization seen in scyphomedusae (Satterlie, 2002, 2011).
In situ observations of the association between juvenile fishes and scyphomedusae in the Bering Sea.
Morphological analyses and DNA sequencing of medusae from the southeastern United States and Turkey confirm that Drymonema is morphologically and genetically distinct from all other genera of semaeostome scyphomedusae.
Scyphomedusae of all life stages pulse and swim essentially continuously (Costello et al.
Although ephyral morphology is strongly conserved among all orders of planktonic scyphomedusae (Russell, 1970; Fig.
The other possibility involves dual innervation of swim musculature by a second nerve net, similar to that found in scyphomedusae (Romanes, 1876, 1877; Horridge, 1956a, b; Passano, 1965, 1973) and labeled with antibodies to RF-amide peptides (Grimmelikhuijzen et al.
The distribution of AnthoRF-amide-like immunoreactivity in scyphomedusae.
Recent studies with in situ techniques have shown that scyphomedusae, hydromedusae, siphonophores, and ctenophores are abundant, often quite large, and apt to play disproportionately important roles as top predators in their food webs (see Mills, 2001; Purcell et at.
List of the medusae craspedotae, siphonophorac, scyphomedusae, ctenophorae.