Cnidaria


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Cnidaria

 [ni-dar´e-ah]
a phylum of marine invertebrates that includes sea anemones, hydras, jellyfish, and corals. See also coelenterata.

Cnidaria

/Cni·da·ria/ (ni-dar´e-ah) a phylum of marine invertebrates including sea anemones, hydras, corals, jellyfish, and comb jellies, characterized by a radially symmetric body bearing tentacles around the mouth.

Cnidaria

a phylum of invertebrate animals that includes jellyfish, sea anemones, hydroids, and corals. Formerly called Coelenterata.

Cnidaria

a subphylum of the phylum Coelenterata in some classifications, where the Ctenophora (sea gooseberries) form the other subphylum (see COELENTERATE). However, in more modern classifications the Ctenophora are given the status of a phylum, so that the organisms classified in the Cnidaria (hydroids, jellyfishes, sea anemones and corals) are the only organisms in the new phylum Coelenterata, thus making the term Cnidaria obsolete.

Cnidaria

a phylum of lowly animals including hydroids and hydromedusae (class Hydrozoa), true jellyfish and free-swimming medusae (class Scyphozoa) and sea anemones, sea pens and corals (class Anthozoa). Previously called Coelenterata and that name is still widely used.
References in periodicals archive ?
On windward roots, percent cover of filamentous algae declined 10-40% and percentage cover of soft-bodied cnidaria declined 15-25%.
TABLE 2 Number species per taxonomic group Number of species Cyanobacteria 5 Bacillariophyta 3 Dinoflagellata 14 Chlorophyta 10 Rhodophyta 28 Ochrophyta 6 Magnoliophyta 5 Protozoa: Foraminifera 33 Cnidaria 100 Anthozoa 23 Scyphozoa 2 Hydrozoa 75 Ctenophora 1 Plathyhelminthes 9 Acanthocephala 2 Nematoda 1 Annelida 4 Sipunculida 2 Mollusca 93 Bivalvia 55 Gastropoda 38 Crustacea 147 Malacostraca 101 Decapoda 94 Maxillopoda 44 Other Crustacea 2 Pycnogonida 1 Bryozoa 9 Echinodermata 11 Chaetognatha 1 Chordata 92 Fishes 82 TOTAL 577 Fig.
Other phyla observed included Chordata (2 species), Echinodermata (1 species), Platyhelminthes (1 species) and Cnidaria (1 species).
This specimen from the Arctic is probably a new species of comb jelly, (Unlike true jellyfish, in the phylum Cnidaria, comb jellies don't have stinging cells.
These could include phytoplankton, Cnidaria fragments, and general detritus that would have been extruded through the nets at higher speed tows.
El macrobentos colectado pertenece a once phyla: Protozoa, Porifera, Cnidaria, Ne matoda, Nemertea, Annelida, Sipuncula, Echiura, Mollusca, Crustacea y Echinodermata.
Lagoons USX Reach Taxa NPS1 NPS2 FWS1 Phylum Porifera Phylum Cnidaria Hydridae Hydra Phylum Platyhelminthes Turbellaria Phylum Nematoda Phylum Bryozoa Plumatella unidentified bryozoans Phylum Annelida Oligochaeta Lumbricidae Lumbriculidae Tubificidae Limnodrilus Limnodrilus cervix Limnodrilus hoffmeisteri Potamothrix vejdovskyi Quistadrilus multisetosus immature w/o capil.
Species of the phylum Cnidaria exhibit a wide variety of life-cycle plasticity and dispersal capabilities (reviewed in Fautin, 2002).
Se identificaron 229 especies correspondientes a 11 Filos: Annelida (Polychaeta), Arthropoda (Pycnogonida, Malacostraca, Ostracoda), Bryozoa, Chordata (Ascidiacea), Cnidaria (Anthozoa, Hydrozoa), Echinodermata (Echinoidea, Ophiuroidea, Holothuroidea, Asteroidea), Mollusca (Gastropoda, Bivalvia, Polyplacophora, Cephalopoda, Scaphopoda), Nemertea (Anopla, Enopla), Platyhelminthes, Porifera y Sipuncula, todos son grupos representativos de comunidades bentonicas costeras (Tabla 1, Apendice I).
We observed in a pilot study the presence of representatives of Porifera, Cnidaria, Anellida, Mollusca, Crustacea, Echinodermata and Chordata, and several species of algae, notably the predominance of green algae.
Arthropoda (11 species) and Mollusca (8 species) were the 2 dominant phyla observed in this study, with regard to richness, and were followed distantly by Annelida (4 species), Chordata (3 species), Cnidaria (2 species), Bryozoa (2 species), and Porifera (1 species), respectively (Table 1).