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Scyphomedusae |
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Scyphomedusae [¦sī·fō·mə′dü‚sē]
(invertebrate zoology) A subclass of the class Scyphozoa characterized by reduced marginal tentacles, tetramerous medusae, and medusalike polyploids. Scyphomedusae individuals of the medusoid (sexually reproducing) generation of coelenterates of the class Scyphozoa. The umbrella, which may be flat or bell-shaped, is semitransparent and often brightly colored or with colored markings. The margins of the mouth are drawn out into four mouth arms, which are sometimes branched. There are often four, eight, or 16 simple or branching radial canals of the digestive system and a ringshaped canal. The margin of the umbrella has eyespots, statocysts, and, in many cases, marginal tentacles. The umbrella varies in diameter from several centimeters to 2 meters (in Cyanea). All Scyphomedusae except those of the order Stauromedusae live deep in the ocean and are capable of swimming. [25–376–1 ] Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Similar processes have been reported off Oregon, where Scyphomedusae become denser and larger in size during summer, when the movement of surface and near-surface waters concentrates plankton in nearshore retention areas (Shenker, 1984). The scyphomedusae are thought to have been transported from the Caribbean into the Gulf of Mexico via the Loop Current. Size-dependent predation on marine fish larvae by ctenophores, scyphomedusae and planktivorous fish. |
Scyphomedusae |
Scyllarian Scyllaridae Scyllaridea Scylliorhinidae Scyllite Scylurus SCYMBL Scymetar sCYMV1 SCYN Scynthians Scynthians SCYO SCYP SCYPG Scypha Scyphiform scyphistoma scyphistoma scyphistomae scyphistomae scyphistomas scyphistomas scypho- Scyphobranchii scyphoid scyphomancy Scyphomedusa Scyphomedusa Scyphomedusa Scyphomedusae Scyphophoriscyphopolyp Scyphozoa Scyphozoa Scyphozoa scyphozoan scyphozoan scyphozoan scyphozoans scyphozoans scyphozoans scyphus SCYRA Scyregemote Scyros Scyros Scyrus Scyrus SCYS SCYSA SCYSC SCYSHL SCYSL SCYSO SCYT Scytale (synonym) Scytale (synonym) Scytale contortrix Scytale contortrix Scytale Cupreus | |||||||
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