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Topic: Hydroid

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hydroid growth

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	MIT Sea Grant \| Cryptogenic Species Descriptions
		Hydroids are small colonial animals that are often confused as plants.
		This hydroid has a hard covering called a thecate that is toothed at the opening for the hydranth (anemone-like structure).
		This hydroid is also known as a zigzag wineglass hydroid, which is descriptive of its alternating growth pattern.
	massbay.mit.edu /exoticspecies/exoticmaps/descriptions_crypto.html (1421 words)

	A gymnoblastic hydroid (Cnidaria: Hydrozoa) from Egypt
		The gymnoblastic hydroid Tubularia crocea is widespread in Egyptian seas (Shoukr, 1982).
		The equations for the regression of hydroid length (x) on tentacles and gonophores numbers (y) and of tentacles and gonophores numbers (y) on hydroid length (x) are calculated and regression lines are drawn on the figures.
		Brink (1925) stated that the weak point of hydroid systematics was based on the fact that the study of the variability of external characters has not been taken into consideration in the discovery and description of new species.
	www.drshoukr.50megs.com (1245 words)

	Abstract of Ph
		The summer regression of Tubularia crocea seems to be normal in the life-cycle of these hydroids and occurring as a response to ecological changes as rising of the sea water temperature and presence of predators or as a result of an ecological succession for another communities.
		Therefore, the morphological variables of the hydroids particularly with growth and maturation are very important and must be taken in consideration in their taxonomy.
		On the other hand, Calyptoblastic hydroids as Obelia dichotoma lack these villi.In the hydroid Tubularia crocea, both the oral and aboral tentacles were solid consisting of endodermal core of vacuolated cells, ensheathed by an ectodermal layer packed with nematocysts.
	www.drfayez.5u.com (2524 words)

	Journey of the Oncorhynchus - Part 3
		Hydroid flattens itself against the screen and cushions the young fish as they ride the screen up, past the turbine into a tunnel within the dam.
		Hydroid coughs on the oil fumes and quickly steers the Hood River smolts away.
		Hydroid notices a shiny spot on the fly and tries to warn the young fish away.
	www.bpa.gov /Power/PL/Columbia/stories/journey3.htm (494 words)

	California Diving News: California Marine Life
		The Showy Ostrich Plume Hydroid and its Entourange
		But the hydroids which direct this type of production need to be calm water varieties, as the tender jellyfish-like phase would be easily torn to bits, not by critics, but by rough water.
		There are other types of ostrich plume hydroid colonies found around the world, all basically variations of the ones found at the rock centers (or the mid-tide sections of the rocky shore), of coastal Southern California.
	www.saintbrendan.com /cdnoct99/velde10.html (975 words)

	hydroid - Encyclopedia.com
		Variation in growth and competitive ability between sexually and clonally produced hydroids.
		Fitness consequences of allorecognition-mediated agonistic interactions in the colonial hydroid Hydractinia [GM]*.
		Dose-response relationships for experimental heterochrony in a colonial hydroid.
	www.encyclopedia.com /doc/1O999-hydroid.html (573 words)

	QinetiQ and Hydroid train Royal Navy to use REMUS unmanned underwater vessel (Site not responding. Last check: 2007-10-22)
		Scientists and engineers from defence and security technology company, QinetiQ, working with US company, Hydroid LLC, have successfully completed a programme to train Royal Navy (RN) personnel in the use of REMUS, which is a very shallow water unmanned underwater vehicle (VSW UUV) used for oceanographic surveys.
		Hydroid has supplied 10 REMUS 100 vehicles to the RN and six of QinetiQ's Classiphi sea-bed mapping tool systems will be used with these.
		QinetiQ and Hydroid have worked together since 2003 when QinetiQ was first asked by the UK's Defence Procurement Agency to evaluate two REMUS 100 units.
	www.qinetiq.com /home/newsroom/news_releases_homepage/2006/2nd_quarter/QinetiQ_and_Hydroid_train_RN_to_use_UUV.html (413 words)

	Graptolite stolons described as remnants of fossil hydroids (Hydroida)
		According to Mierzejewski (1986), such alleged "hydroid" genera as Calyxhydra Koz³owski, 1959, Cylindrotheca Eisenack, 1934, Kystodendron Koz³owski, 1959, Lagenohydra Koz³owski, 1959, Palaeotuba Eisenack, 1934, and fossils described by Koz³owski (1959) as parataxonomic units Gonothecae Formae A, B, and C are simply rhabdopleurid stolons and dormant bud capsules.
		Recently, another "hydroid" genus, Diplohydra Koz³owski, 1959, was also reinterpreted as an aberrant member of the Order Rhabdopleuroidea (Mierzejewski and Kulicki 2002).
		annulata Koz³owski, 1959.The alleged hydroid nature of Trimerohydra was questioned by Bulman (1970) in Treatise on Invertebrate Paleontology and regarded as a possible synonym of the graptolite genus Koremagraptus Bulman, 1927.
	piotr.countofcalmont.com /Trimerohydra.html (321 words)

	ROVworld Subsea Information Portal - Hydroid Ships 100th REMUS 100 System (Site not responding. Last check: 2007-10-22)
		Hydroid LLC announced today that with the recent shipment of a system to the New Zealand Navy they have shipped their 100th system since the founding of the company five years ago.
		A Hydroid representative stated "Hydroid is thankful that the New Zealand Navy is embracing the REMUS technology as a tool to accomplish their MCM mission.
		Hydroid LLC holds the exclusive license from the Woods Hole Oceanographic Institution for the manufacture and further development of the REMUS Autonomous Underwater Vehicle (AUV) technology.
	www.rovworld.com /phpnuke/modules.php?name=News&file=print&sid=1053 (218 words)

	Press Release for Immediate Release
		Hydroid receives major contract from the Royal New Zealand Navy to supply REMUS 100 systems to support the Navy’s mine countermeasures program.
		The REMUS 100 systems, to be delivered by Hydroid in 2006 and 2007, will be configured with a sensor suite specifically suited to meet the Navy’s requirements for mine countermeasure activities (MCM).
		Kevin McCarthy, Hydroid’s vice president of marketing stated, “Hydroid is thankful that the Royal New Zealand’s Navy has shown confidence in Hydroid and the REMUS technology in being able to substantively add to their MCM capabilities.
	www.motn.org /Member_Notices/HydroidPressRelease080806.htm (330 words)

	syngnathid.org - Seahorses, Sea-Dragons, Pipefish, and more!
		Hydroids don't affect large horses, but they will harm your dwarfs.
		Please be aware that all hydroids are not visible to the naked eye and the fry or dwarfs may not be symptomatic immediately.
		The hydroids were seen on the fry in photos taken as early as the beginning of the 6th week, at which time there were no losses and all 38 of them looked absoutly fine, without any symptoms or starnge behavior.
	www.syngnathid.org /ubbthreads/showflat.php?Cat=&Board=Dwarfs&Number=11739&page=&view=&sb=5&o=&fpart=all&vc=1 (2964 words)

	BPA- Power of The Columbia- For Kids of All Ages: Journey of the Oncorhynchus - Part 1 (Site not responding. Last check: 2007-10-22)
		Several drops hit the arching blades of grass shading a shallow pool at the edge of the stream.
		Hydroid counts 5,000 of them when it sees that some pebbles have eyes!
		Hydroid knows the salmon in this small stream are all chinook.
	www.bpa.gov /Power/pl/columbia/stories/Journey1.htm (246 words)

	California Diving News - California Marine Life: Stand Alone Hydroid
		While it is true that many hydroids will be found in one environment together, the main reason it’s hard to get to know just a single individual hydroid is because these animals tend to form colonies.
		The fairy palm hydroid inhabits shallow muddy areas of Southern California, areas which are not particularly famous for their great visibility.
		Most hydroids go through two major stages in their lives—the attached stage which most people are more familiar with, and then a jellyfish-like stage where they can swim around a bit.
	www.saintbrendan.com /cdnmay02/marinelf5.html (715 words)

	The Biological Bulletin: Dose-response relationships for experimental heterochrony in a colonial hydroid.@ HighBeam ... (Site not responding. Last check: 2007-10-22)
		Dose-response relationships for experimental heterochrony in a colonial hydroid.
		Hydractiniid hydroids display a range of morphological variation.
		At one end of the spectrum, the colonies grow in a sheet-like configuration with their polyps close together and short stolons.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:20191512&refid=ip_encyclopedia_hf (225 words)

	ANIMALAND - Hydroid Medusae (Site not responding. Last check: 2007-10-22)
		Hydroid Medusae is a short animation (02 min 06 sec) examining an artificial invertebrate from the inside.
		The reproductive cycle of the organism is fictitious but is based on the reproductive cycles of similar lifeforms.
		The Hydroid Medusae exists in its own little world and carries on its daily life as oblivious of us as we are of it.
	www.csse.monash.edu.au /~aland/medusae.html (235 words)

	The Sea Slug Forum - Dendronotus albus
		This Dendronotus albus is feeding on a hydroid.
		One other point which complicates things is that Dendronotus albus is reported to eat a variety of hydroid species, not all of which are orange.
		I can't guarantee to have an answer for them all, but with the help of other Forum participants, which should be able to give you a 'state of the art' answer - if we have one.
	www.seaslugforum.net /display.cfm?id=10969 (480 words)

	HYDROID - The DJ List
		Up and coming Israeli DJ and Producer, Itay Steinberg is better known as Hydroid.
		Once it was heard by Markus Schulz, Itay's life took a huge turn.
		Representing Israel in a big way for dance music, Hydroid is an upcoming talent not to be underestimated or missed if he is playing in your city!
	www.thedjlist.com /djs/HYDROID (221 words)

	Dr.Anita Brinckmann-Voss
		Anita has established long term research plots in a tidepool at the reserve and documents the distribution of hydroids underwater with the assistance of students and faculty in the Diving program at Lester B. Pearson College.
		A new species of colonial athecate hydroid, Rhysia fletcheri,is described from Vancouver Island, British Columbia, Canada, and from Friday Harbour, Washington, U.S.A. It's relationship to Rhysia autumnalis Brinckmann from the Mediterranean and Rhysia halecii (Hickson and Gravely) from the Antarctic and Japan is discussed.
		An assemblage of 27 hydroid species was reported from a tide pool in the lower rocky intertidal zone, and
	www.racerocks.com /racerock/hydroid/anitabv.htm (492 words)

	Wheaton College (Wheaton, IL) - Biology
		- Ecology, taxonomy and physiological adaptability of the colonial hydroid, Cordylophora spp.
		The Effects of Salinity on the Growth and Morphology of the Colonial Hydroid, Cordylophora spp IN PREP: Journal of Experimental Zoology.
		The Distribution of Hydroid Sibling Species on Hermit Crabs in Estuaries of the Gulf of Maine.
	www.wheaton.edu /Biology/faculty/folinororem.html (272 words)

	hydroid -- Encyclopædia Britannica
		Hydroids have three basic life-cycle stages: (1) a tiny free-swimming planula larva about 1 mm (0.04 inch) long, which settles and grows into (2) a sessile (attached), usually colonial hydroid stage, which in turn liberates (3) medusae.
		The vast majority of research on coelenterates has been focussed on hydras and some of the colonial hydroids.
		If a hydra is cut in half, the head end reconstitutes a new foot, while the basal portion regenerates a new hydranth with mouth and tentacles.
	www.britannica.com /eb/article-9041736?tocId=9041736 (391 words)

	Opisthobranch of the Week is Hydroid Mimic
		Notice the cream colored ceratal core that matched the stalk of the hydroid polyps and the white and red nodules seen in the swollen end of each ceras.
		A similar aeolid species that also resembles tubularid hydroids and does have cerata bearing tentacle-like protuberances is Cuthona kuiteri as seen on Bill Rudman's Sea Slug forum.
		Both of these species are practicing double defense strategies, having both stinging cells in the cnidosacs at the end of each ceras, and the ability to go undetected while on their prey.
	slugsite.us /bow/nudwk443.htm (728 words)

	Hydroid
		Hydroids are actually colonies of individuals called polyps, which grow on a common stalk.
		In order to build up their own colony the hydroids reproduce by budding; all polyp types can bud.
		New colonies in Tubularia are formed when reproductive polyps make little polyps that stay attached until they develop into mature polyps.
	www.psat.wa.gov /you_can_do/creature/hydroid.htm (189 words)

	GEO 580 - Applying the ArcGIS Hydro Data Model to Existing Data
		HydroID does not currently exist in the Watershed feature class; so select to add the field from the dropdown menu bar that is presented.
		The HydroIDs begin with 1 and increment by 1 for each feature to which an ID is assigned.
		The HydroIDs of the outlet junctions will be written in the JunctionID column in the Watershed attribute table.
	dusk2.geo.orst.edu /buffgis/DataModelEx/archydro2.html (3145 words)

	Melevsreef.com - Digitate Hydroid (Site not responding. Last check: 2007-10-22)
		The first one I ever saw was in my refugium, and was a little thicker than a hair and about 1.5" in length when fully extended.
		If you watch Digitate hydroids for any length of time, you'll realize this is a thinking creature that is filter feeding similar to Fly-Fishing.
		The fuzzy end will sway in the current, and the worm will reel it in in short jerks, only to release it again.
	www.melevsreef.com /id/digitate_hydroid.html (120 words)

	Underwater Field Guide to Ross Island & McMurdo Sound, Antarctica
		Tubularia hydroids are colonial, have long stalks with a thickened perisarc covering, and are attached to the substrate by stolons
		The tentacle-fringed conical structure rising up in the middle of the gonophores is the hypostome with the hydroid's mouth and smaller oral tentacles at the end.
		Hydroids have a complex life cycle -- a sexual reproduction stage involving medusae or is medusoid in character, and an asexual reproduction stage, often colonial, involving asexual budding.
	scilib.ucsd.edu /sio/nsf/fguide/cnidaria22.html (475 words)

	Aquascope\|Facts\|Hydroid colony
		The picture depicts an example of what a hydroid colony can look like.
		It is also possible to see the different stages of the hydroids life cycle.
		There are hydroids that lack a colony building polyp stage, while with other specie the medusae stage is lacking.
	www.vattenkikaren.gu.se /fakta/arter/cnidaria/hydrozoa/obellive.html (215 words)

	Home - tranceUNITED.com
		Since childhood he was attracted to EDM, those banging beats and powerful basslines, combined with beautiful melodies, it was love at first sight.
		Since his first successful track which was released early in 2005, he has kept producing under his progressive alias "Hydroid" and because of his obvious talents, others have now caught onto to his flavours.
		Hydroid sound is soft, pumping and very melodic.
	www.tranceunited.com /home/details.php?id=369 (1162 words)

	Schematic Network Processing
		The JunctionID attribute on a Watershed stores the HydroID of the HydroJunction that serves as the outlet for that Watershed.
		The SchemaNodes contain a field called FeatureID, which stores the HydroID of the source feature that is represented by the schematic feature.
		SchemaLinks contain FromNodeID and ToNodeID, which identify the HydroID of the SchemaNodes connected to a given SchemaLink.
	www.crwr.utexas.edu /gis/gishydro03/Schematics/SchematicNetwork.htm (693 words)

	[No title] (Site not responding. Last check: 2007-10-22)
		Like true coral the polyps of this colony contain the green zooxanthellae symbiont which aids in the nutrition of this sessile invertebrate.
		The samurai hydroid (Samuraia tabularasa) is related to the corals and has stinging cells (nematocysts) on its tentacles.
		The samurai hydroid, a newly discovered species, described and researched by Dr. Katrina Mangin, thrives among patches of barnacles, clearing out its own space by stinging and eating barnacle larvae as they try to settle and attach.
	eebweb.arizona.edu /Marine/gulf_ca/Invert.htm (688 words)

	Olympus MIC-D: Brightfield Gallery - Obelia Hydroid
		These animals take two generations to complete one life cycle.
		One generation, illustrated in the digital image above, and captured by the MIC-D, lives in hydroid colonies, consisting of polyps.
		The polyps are stalklike forms that attach to a surface (usually ocean bottom) by means of rootlike filaments.
	www.olympusmicro.com /micd/galleries/brightfield/obeliahigh.html (253 words)

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