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Topic: Coelenterate


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  eMedicine - Coelenterate and Jellyfish Envenomations : Article by Chanida Sintuu, MD
Close to 9000 species of coelenterates are known, of which approximately 100 are toxic to humans.
Pathophysiology: The toxin of coelenterates is located in cnidocytes, which are stinging cells composed of organelles called nematocysts.
Nematocysts are present on the outer surfaces of tentacles or near the mouth.
www.emedicine.com /emerg/topic104.htm   (2290 words)

  
  Science Explorations: Investigate the Giant Squid: Jellyfish and Other Coelenterates | Scholastic.com
Coelenterates are an interesting group of animals because they are found in two basic body forms: the polyp and the medusa.
Coelenterates are separated into four classes, or large groups.
These coelenterates, which have no medusa stage, vary greatly in size and may be solitary or colonial.
teacher.scholastic.com /activities/explorations/squid/libraryarticle.asp?ItemID=212&SubjectID=110&categoryID=5   (2192 words)

  
 Highbeam Encyclopedia - Search Results for coelenterate
coelenterate Alternative name for members of the phylum Cnidaria – aquatic animals which include the jellyfish, sea anemone, coral, and hydroids.
or coelenterate Any of about 9,000 species of mostly marine aquatic invertebrates, constituting the phylum Cnidaria (or Coelenterata), that are unique in possessing specialized stinging cells (cnidocytes) borne on the tentacles.
It is not a true jellyfish: the tentacles are actually a cluster of several kinds of modified medusae...
www.encyclopedia.com /SearchResults.aspx?Q=coelenterate   (676 words)

  
 [No title]
In Coelenterate biology: Proceedings of the 6thÊinternationalÊ congress of coelenterateÊbiology.
In Coelenterate biology: ProceedingsÊof the 6thÊinternationalÊcongress of coelenterateÊbiology.
In Coelenterate biology: proceedingsÊof the 6thÊinternational of coelenterateÊbiology.
life.bio.sunysb.edu /marinebio/cnidarianrepro.doc   (5724 words)

  
 Olympus MIC-D: Darkfield Gallery - Ancient Cnidaria Fossil
Capable of either asexual or sexual reproduction, coelenterates are primitive invertebrates characterized by the radial symmetry typical of sessile, benthic filter feeders.
In similarity to sponges, coelenterates are often colonial, but the tiny hydras are capable of living freely as individuals.
Some coelenterates are free-swimming, such as the Portuguese man-of-war and the jellyfishes, while many species of hydroids are capable of some forms of mobility, including creeping slowing while sliding on their basal discs, or locomoting more rapidly in a series of somersaults or looping movements.
www.olympusmicro.com /micd/galleries/darkfield/cnideriahigh.html   (295 words)

  
 Coelenterates quiz -- free game
The phylum to which coelenterates belong is made up of the Class Hydrozoa (primarily polyps), Class Anthozoa (polyps only), Class Cubozoa (box-like coelenterates, considered by some to be a part of Class Scyphozoa) and Class Scyphozoa (primarily medusae).
This is among the simplest of coelenterates and belongs to the Class Hydrozoa.
Two species of this coelenterate are commonly found, one brownish-grey in colour and one green in colour.
www.funtrivia.com /playquiz/quiz1446641091848.html   (400 words)

  
 Marine Neurotoxins: Envenomations and Contact Toxins
Tentacles may detach from the body of the coelenterates in rough surf or turbulent water, which may result in free-floating nematocysts known as sea lice [1].
Not all nematocysts will discharge on contact with prey or victim, and an undischarged nematocyst may retain its stinging capability for weeks to months, even if the coelenterate is dead or the tentacle has detached [2*].
Generalized symptoms vary with the type of coelenterate, the amount of venom injected, and the condition of the victim, and may include nausea, emesis, diarrhea, fever, and restlessness [2*].
www.treatment-options.com /article.cfm?PubID=NE06-2-1-04&Type=Article&KeyWords=   (4101 words)

  
 Olympus MIC-D: Oblique Gallery - Ancient Cnidaria Fossil
Specialized stinging cells known as nematocysts or cnidae (thus, their alternative phylum name) are used to capture, hold, and reel in prey as well as aiding in locomotion and defense.
As with sponges, coelenterates are often colonial, but the tiny hydra are capable of living freely as individuals.
Some coelenterates are free-swimming, such as the Portuguese man-of-war and the jellyfishes, while many species of hydroids are capable of some forms of mobility by creeping slowing while sliding on their basal discs, or locomoting more rapidly in a series of somersaults or looping movements.
www.olympusmicro.com /micd/galleries/oblique/cnideria2.html   (281 words)

  
 Fire coral persistent cutaneous reaction
All coelenterates are invertebrate organisms composed of a double epithelial layer, which delimits a cavity, the "coelenterium".
Their venomous apparatus is composed of the nematocysts, toxin-releasing organelles composed of a capsule and tube, located in large numbers on the tentacles and made-up of collagen-like material.
In some patients the coelenterate's induced cutaneous reaction can be delayed by the use of systemic corticosteroids (6).
www.mf.uni-lj.si /acta-apa/acta-apa-01-1/4-clanek.html   (930 words)

  
 Definition of coelenterate - Merriam-Webster Online Dictionary
Learn more about "coelenterate" and related topics at Britannica.com
Find more about "coelenterate" instantly with Live Search
See a map of "coelenterate" in the Visual Thesaurus
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=coelenterate   (54 words)

  
 coelenterate - Search Results - MSN Encarta
Cnidarians, also known as coelenterates, diverse group of aquatic, invertebrate animals armed with microscopic stinging structures.
Jellyfish, invertebrate animals that make up two classes of the cnidarian phylum
How well did we match your search term?
encarta.msn.com /coelenterate.html   (114 words)

  
 coelenterate - OneLook Dictionary Search
coelenterate : Compact Oxford English Dictionary [home, info]
Coelenterate : Online Plain Text English Dictionary [home, info]
coelenterate : WordNet 1.7 Vocabulary Helper [home, info]
www.onelook.com /?w=coelenterate   (193 words)

  
 Cnidaria
Coelenterate Ecology and Behavior (Selected papers from the Third International Symposium on Coelenterate Biology, held at the University of Victoria, Victoria, British Columbia, May 10-13, 1976).
Developmental and Cellular Biology of Coelenterates (Proceedings of the 4th International Coelenterate Conference held in Interlaken, Switzerland, 4-8 September, 1979).
Coelenterate Biology: Recent Research on Cnidaria and Ctenophora (Proceedings of the Fifth International Conference on Coelenterate Biology, 1989).
tolweb.org /tree?group=Cnidaria&contgroup=Animals   (2407 words)

  
 Amazon.com: coelenterate   (Site not responding. Last check: 2007-10-29)
Coelenterate Biology 2003: Trends in Research on Cnidaria and Ctenophora (Developments in Hydrobiology) by Daphne G. Fautin, Jane A. Westfall, Paulyn Cartwright, and Marymegan Daly (Hardcover - April 19, 2005)
Coelenterate Biology: Recent Research on Cnidaria and Ctenophora (Developments in Hydrobiology) by R.B. Williams, P.F.S. Cornelius, R.G. Hughes, and E.A. Robson (Hardcover - Dec 31, 1899)
A revision of the sponges and coelenterates of the lower helderberg group of New York by George Herbert Girty (Unknown Binding - 1897)
www.amazon.com /s?ie=UTF8&keywords=coelenterate&tag=lexico&index=blended&link_code=qs&page=1   (393 words)

  
 Nikon MicroscopyU Movie Gallery: Hydra (Coelenterata)
Coelenterates are primarily marine animals, but hydras are found in freshwater ponds, lakes, and streams.
Hydras are also atypical coelenterates because they do not have a medusa (jellyfish) stage as part of their life cycle as do most other coelenterates.
They live and reproduce sexually and asexually, but only in the tube-shaped polyp form.
www.microscopyu.com /moviegallery/pondscum/coelenterata/hydra/index.html   (406 words)

  
 coelenterate   (Site not responding. Last check: 2007-10-29)
You can find over 300,000 blogs which you can take over.
you can delete all of the existing coelenterate related messages that are here and write your own.
but, you can also delete all of the existing messages on this coelenterate blog and fill it with your own.
coelenterate.wordblogs.net   (756 words)

  
 EM PROJECT: MICHELLE JOHNSON AND MISTY BORJA
An Ultrastructural Study on the Transportation and Intracellular Incorporation of Coelenterate Nematocysts by the Predatory Nudibranch Mollusc Hermissenda crassicornis.
Very little is known about the process by which functional nematocysts are selectively transferred from the digested prey into the highly colored, projecting cerata on the lateral and dorsal surface of the mollusc.
Transmission electron micrographs of these nematocysts show that they are now ìacellularî and have been digested away from the coelenterate cnidocyte in which they were originally retained.
www.csulb.edu /~zedmason/emprojects/misty/nudibr.html   (1810 words)

  
 Voyage to the Bottom of the Sea, Classic Episode, Mutiny
Doc bursts into Crane's cabin with news that one of the divers fell into a coma and has died, the victim of electromagnetic radiation picked up from the coelenterates.
Crane is now stricken, putting two and two together: Just at this moment that the coelenterate shows itself and Admiral Starke, realizing now that Crane was right all along, orders the Captain to the control room on the double.
The monstrous coelenterate decends for the kill and Crane orders the attack-generators into action.
www.vttbots.com /mutiny_5.html   (387 words)

  
 Dictionary
Composed of, containing, or characteristic of calcium carbonate, calcium, or limestone; chalky.
A coelenterate, such as a hydra or coral, having a cylindrical body and an oral opening usually surrounded by tentacles.
The tentacle, usually bell-shaped, free-swimming sexual stage in the life cycle of a coelenterate, such as a jellyfish.
library.thinkquest.org /05aug/01819/Dictionary.htm   (239 words)

  
 54
Evidence for similar biochemical requirements for bioluminescence among the coelenterates.
In: Coelenterate Biology: Reviews and New Perspectives, edited by L. Muscatine and H. Lenhoff (Academic Press, Inc., New York, 1974), pp.
Comparative biochemistry of calciumactivated photoproteins from the ctenophore, Mnemiopsis and the coelenterates Aequorea, Obelia, Pelagia and Renilla.
www.eeb.cornell.edu /morin/pubs.html   (1244 words)

  
 The Green Tent and How to Camp In a Penthouse
The crew had already been granted a two week shore leave because some refitting was badly needed to correct the damage that an extremely large coelenterate had given to the lady's titanium hull when the creature had tried to get "up close and personal".
Fortunately everything had turned out well, but the entire crew was now feeling the effects of the stress as well as the exhaustion of a dangerous mission.
Not only did he have to command the vessel through the "little wrestling match" with the coelenterate, but when the ballast tanks had sprung several leaks, the Captain had endured the cold waters and the pressure to help the C. seal the leaks.
home.earthlink.net /~nelsoncrane2/Carol/Tent.html   (1693 words)

  
 Index s_z
A porcellanid crab (Decapoda, Anomura) on the coelenterate, Pennatula sp.
Williams, G.C. Biogeography of the octocorallian coelenterate fauna of southern Africa.
Preliminary assessment of the phylogeny of Penntulacaea (Anthozoa: Octocorallia), with a reevalutation of Ediacaran frond-like fossils, and a synopsis of the history of evolutionary thought regarding the sea pens.
www.calacademy.org /RESEARCH/izg/indexs_z.htm   (5555 words)

  
 Meanings of the word "coelenterate" and its relationships to other words   (Site not responding. Last check: 2007-10-29)
Meanings of the word "coelenterate" and its relationships to other words
Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.
arthropod; zoophyte; sponge, poriferan, parazoan; coelenterate, cnidarian; ctenophore, comb jelly; worm; woodborer, borer; rotifer; mollusk, mollusc, shellfish; phoronid; bryozoan, polyzoan, sea mat, sea moss, moss animal; ectoproct; entoproct; Symbion pandora; brachiopod, lamp shell, lampshell; peanut worm, sipunculid; echinoderm
www.massmind.org /dict/coelenterate   (105 words)

  
 DAN Divers Alert Network : Physalia physalis (Portuguese Man-of-War)
Your experience is consistent with the sting of a Portuguese man-of-war (Physalia physalis).
There are other members of the coelenterate phylum which can produce a similar reaction, but Physalia is the most common offender.
The animal has a "sail" which floats on the surface and moves the animal in the direction of the wind.
www.diversalertnetwork.org /medical/faq/faq.asp?faqid=26   (482 words)

  
 Coelenterate Sting -- Oscherwitz 121 (12): 985 -- Annals of Internal Medicine
Coelenterate Sting -- Oscherwitz 121 (12): 985 -- Annals of Internal Medicine
coelenterate exposure could have resulted in the patient's IgG
If the letter is selected for publication, the author will be notified about 3 weeks before the publication date.
www.annals.org /cgi/content/full/121/12/985   (238 words)

  
 Index A-C
Modulation of a rhythmic activity by serotonin via cyclic AMP in the coelenterate Renilla kollikeri.
Monoaminergic mechanisms associated with control of luminescence and contractile activities in the coelenterate, Renilla kollikeri.
Brafield, A.E. Water movements in the pennatulid coelenterate Pteroides griseum.
www.calacademy.org /research/izg/indexa_c.htm   (3947 words)

  
 Coelenterate Biology: Recent Research on Cnidaria and Ctenophora: Proceedings of the Fifth International Conference on ...
Coelenterate Biology: Recent Research on Cnidaria and Ctenophora: Proceedings of the Fifth International Conference on Coelenterate Biology, 1989 [Developments in Hydrobiology, 66] - International Conference on Coelenterate Biology University of S
Coelenterate Biology: Recent Research on Cnidaria and Ctenophora: Proceedings of the Fifth International Conference on Coelenterate Biology, 1989 [Developments in Hydrobiology, 66]
Isbn: 0792312414 by International Conference on Coelenterate Biology University of S
www.vikramasila.org /393917_international-conference-on-coelenterate-biology-university-of-s_0792312414coelenteratebiologyrecentresearchoncnidariaandctenophor.html   (200 words)

  
 Dithecoid Graptolites (Dithecoidea)
In looking through Recent coelenterate collections in the Institute of Zoology of the Soviet Academy of Sciences, Leningrad, I noted
Such additional assumption in Sdzuy's conception is the alleged existence of primitive graptolites, budding in diads and devoid of bithecae, unsubstantiated by any observations.
Moreover, the presence of scyphoplyps Coronata in the Cambrian fully agrees with their modern interpretations as the most primitive polyps of coelenterates (Werner 1973).
www.graptolite.net /jaws/di.html   (1590 words)

  
 NBN Gateway - protected site species data
Coelenterate (=cnidarian) records at 10km or better that fall within or overlap Obain Loch Euphoirt (SAC)
This page lists species for the group coelenterate (=cnidarian) which have species that fall within or overlap Obain Loch Euphoirt recorded at 10km and based on the datasets you have access to.
Click on a species group to view the species recorded.
www.searchnbn.net /siteInfo/siteSpeciesList.jsp?useIntersects=1&siteKey=13298&siteType=8&maxRes=1&allDs=1&desig=0&engOrd=1&src=1&pg=1&spGrpKey=63&mapService=&homePageY=&homePageX=   (167 words)

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