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Topic: Platyhelminthes

Related Topics

Flatworm

Monogenea

Animal

Nematoda

Trematoda

Body cavity

Acoelomorpha

Turbellaria

Digenea

Eukarya

Animalia

Annelida

Nemertea

Digestive tract

Planarium

	Spermplaty: a bibliography on sperm of Platyhelminthes
		Ultrastructure of sperm and spermatogenesis of Cichlidogyrus thurstonae (Platyhelminthes, Monogenea, Monopisthocotylea).
		Justine, J.-L. Spermatozoal ultrastructure and phylogeny of the parasitic Platyhelminthes.
		Ultrastructure of sperm and spermatogenesis of Anoplodiscus cirrusspiralis (Platyhelminthes, Monogenea, Monopisthocotylea).
	www.mnhn.fr /mnhn/bpph/Data/Spermplaty (6544 words)

	Platyhelminthes (Site not responding. Last check: 2007-11-07)
		Platyhelminthes A summary of platyhelminth characteristics, with emphasis on the three parasitic classes.
		Turbellarian Platyhelminths Taxonomy A hierarchical taxonomy of Platyhelminthes by Seth Tyler.
		A bibliography on ultrastructure of spermatoza of parasitic Platyhelminthes These page presents a bibliography of ultrastructural studies of spermatozoa and spermiogenesis in the parasitic Platyhelminthes (Aspidogastrea, Digenea, Polyopisthocotylea, Monopisthocotylea, Gyrocotylidea, Amphilinidea, and Eucestoda).
	www.serebella.com /encyclopedia/article-Platyhelminthes.html (567 words)

	The Flatworms and Tapeworms (Phylum Platyhelminthes)
		Platyhelminthes are an ancient phylum, but practically nothing is known of their evolutionary history because they have very soft bodies which do not preserve well as fossils.
		Platyhelminthes are mostly worm like creatures that are dorsoventrally flattened, meaning they look like a ribbon, this is why they are called names such as Tapeworm, Flatworm, Fluke and Planarian.
		The higher classification of the Platyhelminthes, is as with so many other groups, in a state of confusion, and there is little consensus of opinion among the experts.
	www.earthlife.net /inverts/platyhelminthes.html (804 words)

	Flatworm - Wikipedia, the free encyclopedia
		The flatworms (Platyhelminthes, Greek "platy"': flat; "helminth": worm) are a phylum of relatively simple soft-bodied invertebrate animals.
		Usually the digestive tract has one opening, but in particularly long worms or those with highly branched guts, there may be one or more anuses.
		Since most flatworms have only one opening to their digestive tract, they can't feed, digest, and eliminate undigested particles of food simultaneously, as most animals with tubular guts can.
	en.wikipedia.org /wiki/Platyhelminthes (604 words)

	Journal of Systematic Biology--Volume 8, Issue 1
		Platyhelminthes are invertebrate Bilateria without a coelom or a definitive anus (Hyman, 1951; Russel-Hunter, 1968).
		The purpose of this paper is to investigate the evolutionary relationship between the free-living and parasitic organisms in the Phylum Platyhelminthes.
		Phylogeny of the Platyhelminthes and the evolution of parasitism.
	comenius.susqu.edu /bi/202/Journal/Vol8/number1/1CATCH5.htm (1552 words)

	The Platyhelminthes and the Acoela
		Exactly where the Neodermata came from among turbellarian platyhelminths is not at all clear; a number of potential ancestral groups have been proposed (Ehlers, 1985; Brooks, 1989; Littlewood et al., 1999; Lockyer et al., 2003; Baguñà and Riutort, 2004).
		Platyhelminths seem to be preadapted to developing such an epidermis in that even the turbellarians go through successive generations of epidermis in their embryonic development, and as adults they regenerate their epidermis by repacing cells that are lost with cells that migrate into it from the parenchyma below the muscles (Tyler and Tyler 1997).
		Perhaps other platyhelminths adapted similarly from another ancestor, but many of their similarities are rather difficult to explain as convergence.
	devbio.umesci.maine.edu /styler/globalworming/platyhelm.htm (3871 words)

	Introduction to the Platyhelminthes
		The simplest animals that are bilaterally symmetrical and triploblastic (composed of three fundamental cell layers) are the Platyhelminthes, the flatworms.
		If this latter view is correct, then most of the flatworms may belong to the Lophotrochozoa, a large group within the animal kingdom that includes molluscs and earthworms, while the rest belong near the base of animal diversity.
		A few trace fossils have been reported that were probably made by platyhelminths (Alessandrello et al., 1988), and fossil trematode eggs have been found in Egyptian mummies and in the dried dung of Pleistocene ground sloth.
	www.ucmp.berkeley.edu /platyhelminthes/platyhelminthes.html (759 words)

	A molecular phylogeny of the monogeneans inferred from 28S rDNA sequences
		Two main hypotheses of relationships within the parasitic Platyhelminthes, one in which the Monopisthocotylea is the sister-group to all other parasitic Platyhelminthes, and making the Monogenea paraphyletic, and one in which the Monogenea are monophyletic and sister-group of the Cestoda, are summarised in Fig.
		Phylogeny and a revised classification of the Monogenoidea Bychowsky, 1937 (Platyhelminthes).
		Spermiogenesis and sperm ultrastructure in Troglocephalus rhinobatidis, Neoheterocotyle rhinobatidis and Merizocotyle australensis (Platyhelminthes, Monogenea, Monopisthocotylea, Monocotylidae).
	www.mnhn.fr /mnhn/bpph/Data/Mollaret2000/mollaret2000.html (5536 words)

	lb6pg6
		Members of the phylum Platyhelminthes (Greek platy = flat, and helmins = worms) are dorsoventrally flattened, which accounts for their common name, the flatworms.
		Free-living platyhelminthes are mainly carnivorous and prey on small invertebrates that can easily be captured.
		Parasitic platyhelminths also have protonephridia, however the specific function is still uncertain.
	io.uwinnipeg.ca /~simmons/lb6pg6.htm (676 words)

	Platyhelminthes
		Members of the phyla Platyhelminthes, Nematoda, and Rotifera have a vermiform (wormlike shape) and are the first in this manual to have a third layer of cells (the mesoderm) instead of just the epidermis and gastrodermis as in cnidarians.
		The platyhelminths and aschelminths have bilateral symmetry and meet the environment in a more aggressive, head-on fashion than the radiate animals.
		Flatworms (Phylum Platyhelminthes) have their body cavities loosely filled with cells and are said to exhibit an acoelomate body plan.
	cas.bellarmine.edu /tietjen/images/platyhelminthes.htm (1120 words)

	Nearctica - Natural History - Platyhelminthes
		The phylum Platyhelminthes (flatworms) are generally dorsally-ventrally flattened and elongate animals.
		These worms are generally simple and the digestive cavity, when present, is a single cavity with a single opening serving as both mouth and anus.
		Each segment is a reproductive sack and as it ripens it breaks off and pass to the outside of the host in its feces.
	www.nearctica.com /nathist/miscanim/flatworm.htm (257 words)

	Turbellaria - Taxonomy
		Turbellarians are the largely free-living flatworms---those that don't parasitize other animals---while the other classes encompass the obligate parasites, most of which live in or on the bodies of vertebrates.
		Platyhelminthes may be monophyletic afterall, but no autapomorphy has been identified for it.
		The Platyhelminthes, as defined in these molecular systems, would not be a sister group of the Acoelomorpha but of another lophotrochozoan phylum.
	devbio.umesci.maine.edu /styler/turbellaria (773 words)

	Platyhelminthes (Site not responding. Last check: 2007-11-07)
		A bibliography on ultrastructure of spermatoza of parasitic Platyhelminthes - These page presents a bibliography of ultrastructural studies of spermatozoa and spermiogenesis in the parasitic Platyhelminthes.
		Platyhelminthes - A summary of platyhelminth characteristics, with emphasis on the three parasitic classes.
		Turbellarian Platyhelminths Taxonomy - A hierarchical taxonomy of Platyhelminthes by Seth Tyler.
	www.findly.com /platyhelminthes.htm (236 words)

	Platyhelminthes Classification. - Zoology - What's Been Published (Site not responding. Last check: 2007-11-07)
		Platyhelminth parasites of the amphibia / Stephen Prudhoe & Rodney A. Bray.
		A checklist of the Trypanorhyncha (Platyhelminthes: Cestoda) of the world (1935-1985) / R.M. Bates.
		The morphology, karyology and taxonomy of a new freshwater planarian of the genus Phagocata from California (Platyhelminthes, Turbellaria) / Ian R. Bell, N. Gourbault.
	www.pitbossannie.com /rps-ql-platyhelminthes-classification.html (137 words)

	Directory - Science: Biology: Flora and Fauna: Animalia: Platyhelminthes
		Phylum Platyhelminthes is commonly known as the flatworms, including free-living flatworms (class Turbellaria), as well as mostly parasitic flukes and tapeworms (classes Monogenea, Trematoda, and Cestoda).
		If this is correct, most of the flatworms may belong to the Lophotrochozoa, a large group within the animal kingdom that includes molluscs and earthworms, while the rest belong near the base of animal diversity.
		Introduction to the Platyhelminthes · cached · Introduction to the Platyhelminthes, the flatworms: life in two dimensions.
	www.incywincy.com /default?p=71081 (241 words)

	Platyhelminthes
		While the structure of the flatworms marks a major step in animal evolution, their origin and relationships within the group are still controversial.
		Two new species of Monogenea (Platyhelminthes: Cercomeridea) parasitic on Chaetodipterus faber (Teleostei: Ephippidae) from the Brazilian coastal zone.
		Asexual Reproduction in Pygospic elegans C1aparede (Annelida, Polychaeta) in Relation to Parasitism by Lepocreadium setiferides (Miller and Northup) (Platyhelminthes, Trematoda).
	www.infoplease.com /ce6/sci/A0839338.html (130 words)

	platyhelminthes
		However, flatworms also lack a complete digestive tract, but instead only have one opening for substances to both enter and leave the body.
		Platyhelminths are commonly known as "flatworms," owing to their almost paper-thin structure.
		Their digestive system (if present) is incomplete, and they possess only a mouth.
	www.wm.edu /act2online/projects/fahey03/platyhelminthes.html (1046 words)

	Phylogenetic relationships within the polyopisthocotylean monogeneans (Platyhelminthes)
		The Neodermata, or parasitic Platyhelminthes, which include the Cestoda, Trematoda and Monogenea, are monophyletic (Blair et al., 1996; Brooks and McLennan, 1993; Brooks et al., 1985; Carranza et al., 1997; Ehlers, 1985a, b).
		A summary of the database pertaining to the phylogeny of the major groups of the parasitic platyhelminths, with a revised classification.
		The phylogeny of the Cercomeria Brooks, 1982 (Platyhelminthes).
	www.mnhn.fr /mnhn/bpph/Data/Jovelin2001/Jovelin2001.htm (5062 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		The Platyhelminthes are dorso-ventraly flattened worms, with solid acoelomate bodies, (i.e.
		The most studied platyhelminthes are parasites, but there are also many free living members of the class Turbellaria.
		With the important exception of the schistosomes, they are mostly hermaphroditic, their reproductive system showing many features which are common to a number of the different main groups.
	www.path.cam.ac.uk /~schisto/OtherFlukes/Platy_Gen/Platy_intro.html (374 words)

	Acoelomates < Zoology < Biology < Science - wish7.com - Acoelomates (Site not responding. Last check: 2007-11-07)
		Quiz on Platyhelminthes A quiz with 18 questions about various Platyhelminthes, free-living or parasitic.
		Dugesia The anatomy of the triclad turbellarian, commonly known as planaria.
		Turbellarian Platyhelminths Taxonomy A regularly updated hierarchical taxonomy of Platyhelminthes, by Seth Tyler.
	www.wish7.com /Science/Biology/Zoology/Acoelomates (317 words)

	Simple Science Wiki: Taxonomy - Phylum Platyhelminthes (Basic Biology Textbook) (Site not responding. Last check: 2007-11-07)
		Tapeworms are an example of platyhelminthes that parasitize mammals.
		Organization: Platyhelminthes have the tissue level of organization, with specialized cells found in all areas of the body.
		Reproduction: Reproduction in platyhelminthes can occur either asexually (by budding, of even by being cut in half in which case both halves will regenerate into a complete flatworm), or sexually by the combination of gametes.
	www.renaissoft.com /april/cgi-bin/wiki.pl?Taxonomy_-_Phylum_Platyhelminthes_(Basic_Biology_Textbook) (303 words)

	Departament de Genètica
		Our research effort has been aimed to determine the phyletic position of the Platyhelminthes, a group traditionally considered the sister group of the rest of the Bilateria.
		Full length sequences of 45 species belonging to the class Turbellaria (free-living Platyhelminthes) have been obtained and analysed using different phylogenetic methods.
		Carranza, S., Baguñà, J. and Riutort, M. Are the Platyhelminthes a monophyletic primitive group?.
	www.bio.ub.es /genet/memoria/epi1uk.htm (267 words)

	Platyhelminthes Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-11-07)
		Looking For platyhelminthes - Find platyhelminthes and more at Lycos Search.
		Find platyhelminthes - Your relevant result is a click away!
		Look for platyhelminthes - Find platyhelminthes at one of the best sites the Internet has to offer!
	www.folkartmuseum.com /search/encyclopedia/Platyhelminthes (743 words)

	Platyhelminthes (Site not responding. Last check: 2007-11-07)
		Platyhelminthes, also known as "flatworms," have bilateral symmetry and are a simple animal.
		They are also triploblastic, which means they are made up of three cell layers.
		They lack organs for repiration and therefore the cells allow gases to to diffuse out in from their surroundings.
	www4.d25.k12.id.us /phs/biology/abtplatyhelminthes4th.html (84 words)

	Platyhelminthes : A topic worthy of detailed inquiry. References and resources to initiate worthwhile study, ...
		Platyhelminthes : A topic worthy of detailed inquiry.
		Platyhelminthes and Nemertinea, Volume 3, Microscopic Anatomy of Invertebrates
		The morphology, karyology and taxonomy of a new freshwater planarian of the genus Phagocata from California (Platyhelminthes, Turbellaria)
	databank.oxydex.com /beyond_mundania/Platyhelminthes.html (513 words)

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