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Topic: Gastrotricha

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Ectoprocta

Trichoplax

Kinorhyncha

Coelom

Parthenogenesis

Acanthocephala

Protozoa

Scientific classification

	articulata
		Another set of characters is presented that supports the monophyly of Ecdysozoa: molting under influence of ecdysteroid hormones, loss of locomotory cilia, trilayered cuticle and the formation of the epicuticle from the tips of epidermal microvilli.
		Comparative morphology suggests Gastrotricha as the sister group of Ecdysozoa with the synapomorphies: triradiate muscular sucking pharynx and terminal mouth opening.
		Proposed relationships under the Ecdysozoa hypothesis: Panarthropoda and Cycloneuralia are sister taxa, the closest sister group of Ecdysozoa is Gastrotricha.
	chuma.cas.usf.edu /~garey/articulata.html (622 words)

	GASTROTRICHA - LoveToKnow Article on GASTROTRICHA
		been thought to be a testis, and if Be, Bristles surrounding the mouth, it be, the Gastrotricha are hermads, Dorsal bristles.
		Zelinka classifies the group as fol~ Ke, Cuticular dome, lows: Mr, Oral cavity.
		Those that are usually dwelt on are treated with the Rotifers and Nematoda and Turbellaria, LITERATURE.A. Stokes, The Microscope (Detroit, 1887-1888);
	www.1911encyclopedia.org /G/GA/GASTROTRICHA.htm (551 words)

	Gastrotricha >> News (Site not responding. Last check: 2007-10-21)
		A new species of Acanthodasys (Gastrotricha: Thaumastodermatidae) from the west coast of Norway.
		Hochberg R. (2005) - First record of Polymerurus (Gastrotricha, Chaetonotida) from Australia with the description of a new species from Queensland and of cuticular ultrastructure in P. nodicaudus.
		Todaro, M. & Rocha, C. Diversity and distribution of marine Gastrotricha along the northern beaches of the state of Sao Paulo (Brazil), with description of a new species of Macrodasys (Macrodasyida, Macrodasyidae).
	www.gastrotricha.unimore.it /news.htm (319 words)

	Guide to Animal Names
		1998: Annelida, Arthropoda, Brachiopoda, Bryozoa, Chaetognatha, Cycliophora, Deuterostomia, Entoprocta, Gastrotricha, Gnathostomulida, Kinorhyncha, Loricifera, Mollusca, Nematoda, Nematomorpha, Nemertea, Onychophora, Phoronida, Platyhelminthes (excluding Acoela & Nemertodermatida), Priapulida, Rotifera, Sipuncula, Tardigrada
		Peterson & Eernisse 2001: Annelida, Arthropoda, Brachiopoda, Bryozoa, Chaetognatha, Cycliophora, Entoprocta, Gastrotricha, Gnathostomulida, Kinorhyncha, Loricifera, Mollusca, Nematoda, Nematomorpha, Nemertea, Onychophora, Phoronida, Platyhelminthes, Priapulida, Rotifera, Sipuncula, Tardigrada
		Hyman 1951b: Entoprocta, Gastrotricha, Kinorhyncha, Nematoda, Nematomorpha, Priapulida, Rotifera
	tolweb.org /accessory/Guide_to_Animal_Names?acc_id=55 (1231 words)

	Integrative and Comparative Biology: Two dimensions of biodiversity research exemplified by nematomorpha and ...
		Two examples are the life cycle of Nematomorpha and the phylogenetic position of Gastrotricha.
		For the phylogenetic position of Gastrotricha, alternative hypotheses are available, mainly due to different results of morphological and molecular (18S rDNA) analyses.
		Although both Nematomorpha and Gastrotricha are "lesser known groups," it will be shown that detailed knowledge is important in understanding more general biodiversity patterns and processes.
	www.findarticles.com /p/articles/mi_qa4054/is_200206/ai_n9119156 (1423 words)

	Gastrotricha
		Phylogeny of gastrotricha: a morphology-based framework of gastrotrich relationships.
		The interrelationships of the Gastrotricha using nuclear small rRNA subunit sequence data, with an interpretation based on morphology.
		Novelty in phylogeny of Gastrotricha: Evidence from 18S rRNA gene.
	tolweb.org /tree?group=Gastrotricha&contgroup=pseudocoelomates (476 words)

	Nikon MicroscopyU Movie Gallery: Chaetonotus (Gastrotricha) Video No. 1
		The Chaetonotus genus is the largest gastrotrich that occurs in freshwater and can be found in plant-choked ditches and mossy ponds.
		About 1,800 species of Gastrotrichs belong to classification Gastrotricha, which some regard as a distinct phylum, but which historically has been regarded as a class of the phylum Aschelminthes.
		They can be found in salt water and fresh water and also on sandy seashores, but most commonly inhabit stagnant waters and bottom muds rich in decaying matter.
	www.microscopyu.com /moviegallery/pondscum/gastrotrich/chaetonotus/28k/chaetonotus01.html (202 words)

	aschelminth -- Encyclopædia Britannica
		The phylum includes five diverse classes: Nematoda (or Nemata), Rotifera, Gastrotricha, Kinorhyncha (or Echinodera), and Nematomorpha.
		The American zoologist Libbie H. Hyman, in her classic textbooks on the invertebrates, originally included Priapulida as a class of the aschelminths, but Priapulida are…
		The American zoologist Libbie H. Hyman, in her classic textbooks on the invertebrates, originally included Priapulida as a class of the aschelminths, but Priapulida are usually...
	www.britannica.com /eb/article-9110239?tocId=9110239&query=pharynx (367 words)

	Introduction to the "Aschelminth" Phyla
		Gastrotricha -- gastrotrichs; about 430 species known, all microscopic
		Most are soft-bodied worms, and many of them are microscopic -- in fact, practically all members of the Cycliophora, Gastrotricha, Kinorhyncha, Loricifera, and Rotifera are less than 1 millimeter long, as are many nematodes and priapulids.
		On the other hand, one species of parasitic nematode can reach 13 meters in length -- it parasitizes the sperm whale -- and adult nematomorphs, chaetognaths, and some priapulids are also visible to the naked eye.
	www.ucmp.berkeley.edu /aschelminthes/aschelminthes.html (941 words)

	Aschelminthes (Site not responding. Last check: 2007-10-21)
		The Aschelminthes (sometimes Aeschelminthes), are an obsolete phylum of pseudocoelomate[?] and other similar animals, including as classes the Nematoda, Rotifera, Gastrotricha, Kinorhyncha, and Nematomorpha, and sometimes the Priapulida and Entoprocta.
		Many of these groups are no longer considered closely related and have been promoted to phyla in their own right, and the name is now generally only used as an informal term.
		These poor fellows do not understand all your subtleties.
	www.termsdefined.net /as/aschelminthes.html (311 words)

	The Platyhelminthes and the Acoela
		Hermaphroditism, with reproductive organs as complicated as those of the flatworms, appear in the Gnathostomulida and Gastrotricha, for instance.
		Other worm phyla have cuticle (Gastrotricha, Nematoda, Nematomorpha, Kinorhyncha, Priapulida, etc.), multiciliated epidermal cells (all worm phyla but the Gnathostomulida), solid (acoelomate) bodies (Gastrotricha and miscellaneous representatives of Nematoda, Annelida, etc.), and fiber-form muscle cells.
		And though obviously a convergent similarity, the character of biflagellate spermatozoa is seen in some groups of fishes.
	devbio.umesci.maine.edu /styler/globalworming/platyhelm.htm (3871 words)

	Natural Selection: subject gateway to the natural world
		Checklists of both freshwater and aquatic species of Gastrotricha from around the world are accessible here.
		There is also a useful bibliography of literature pertaining to Gastrotricha.
		Sea anemone species information is provided here in a database that offers descriptions, distribution maps, images, a bibliography and an inventory of type specimens with details of location (host museum or institution).
	nature.ac.uk /text/browse/578.777.html (1554 words)

	AMNH Bibliography Invertebrate Type Catalog
		Boyko, C. Catalog of Recent type specimens in the Department of Invertebrates, American Museum of Natural History.
		Catalog of Recent type specimens in the Department of Invertebrates, American Museum of Natural History.
		Feinberg, H.S. A catalogue of type specimens in the Department of Living Invertebrates, The American Museum of Natural History, New York, New York, U.S.A. The Phyla Platyhelminthes and Gnathostomulida.
	peet.fmnh.org /amnh_biblio_type_cat.html (249 words)

	Platyhelminthes & Nemertea, Gastrotricha, Rotifera, Acanthocephala: evolution of body plans, aceolomates, ... (Site not responding. Last check: 2007-10-21)
		Platyhelminthes and Nemertea, Gastrotricha, Rotifera, Acanthocephala: evolution of body plans, aceolomates, pseudocoels, rhyncho
		Platyhelminthes and Nemertea, Gastrotricha, Rotifera, Acanthocephala: evolution of body plans, aceolomates, pseudocoels, rhynchocoels, and eucoels.
		For the structures listed for you to ID know both structure and function.
	bama.ua.edu /~clydeard/bsc376/lab_exercise_9_24.htm (357 words)

	GENERAL PROBLEMS OF NEMATOLOGY (Site not responding. Last check: 2007-10-21)
		Cladistic analyses of morphological characters suggest the Nematoda to be a sister group of the Gastrotricha.
		On the contrary, recent analyses of the 18S rRNA gene sequences place the Nematoda in a hypothetical clade of molting animals "Ecdysozoa", or cluster them with Chaetognatha, while the Gastrotricha, represented by the specialized order Chaetonotida, are placed outside these groups.
		Depending on taxon sampling, the Nematoda and Gastrotricha moved from basal to apical position in the 18S rRNA trees, but only occasionally appeared as sister groups.
	www.zin.ru /conferences/ns/abstracts.htm (16742 words)

	Garden Buys - Gastrotricha (Site not responding. Last check: 2007-10-21)
		Find gastrotricha at one of the best sites the Internet has to offer!
		Read about gastrotricha in the free online encyclopedia and dictionary.
		Find, organize and share information from 1,000s of trusted business, consumer and reference publications.
	www.gardenbuys.net /Garden_Supplies/Flora_and_Fauna/Animalia/Gastrotricha/Gastrotricha.html (188 words)

	Cadence Web Directory » Science » Biology » Flora and Fauna » Animalia » Gastrotricha (Site not responding. Last check: 2007-10-21)
		Below are some useful links about Gastrotricha on Animalia:
		Gastrotricha World Portal - Detailed information about these small aquatic organisms, including overview, systematics, evolution, checklists, photos, and movies.
		The content of this page about Animalia Gastrotricha is based on the Open Directory Project.
	www.cadence.com.au /directory/Science/Biology/Flora_and_Fauna/Animalia/Gastrotricha (84 words)

	Hochberg-New species of Pseudostomella (Site not responding. Last check: 2007-10-21)
		Two new species of Pseudostomella (Gastrotricha: Macrodasyida) with scaled triancres from the east coast of Australia
		Keywords Gastrotricha; Macrodasyida; Pseudostomella klauserae; Pseudostomella megapalpator; new species; meiofauna; Australia; North Stradbroke Island
		M01056 Received 4 July 2001; accepted 22 January 2002; published 17 September 2002
	www.rsnz.org /publish/nzjmfr/2002/048.php (213 words)

	ZO 402 Guide to Scientific Names
		Scientific names are said to be "anglicized" when the endings are changed to English format.
		For example, the phylum name Gastrotricha becomes "gastrotrich" when anglicized, Gyraulidae becomes "gyraulid," and Coleoptera becomes "coleopteran."
		Anglicized names are treated the same as common names (see below).
	www.cals.ncsu.edu /course/zo403/scinames.html (1107 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		Taenia solium (pork tapeworm) e.g Echinococcus (dog tapeworm)¡6\ ªP óó¨34 Animal Phyla¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
		- 5 óZ’¨34 Animal Phyla¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
		ó’¯¨34 Animal Phyla¨¡Porifera Nematoda Tardigrada Placozoa* Nematomorpha Arthropoda Monoblastozoa* Acanthocephala Mollusca Rhombozoa Entoprocta Phoronida Orthonectida Gnathostomulida Ectoprocta Cnidaria Priapula Brachiopoda Ctenophora Loricifera* Echinodermata Platyhelminthes Cyliophora* Chaetognatha Nemertea Sipuncula Hemichordata Rotifera Echiura Chordata Gastrotricha Annelida Kinorhyncha Onychophora *
	www.mun.ca /biology/pickavance/2122F04textforstudents.ppt (626 words)

	IB 120(2)
		Department of Zoology and Center for Marine Biology, University of New Hampshire, Durham, NH 03824, USA
		A cladistic analysis based on 33 morphological characters was performed for the 31 genera currently assigned to the order Macrodasyida (Gastrotricha).
		Outgroup analysis indicated that the order is monophyletic and that it is defined by the structure of the pharynx and the complex distribution of duo-gland adhesive organs.
	www.invertebratebiology.org /ib1202.php (2157 words)

	IWF Wissen und Medien gGmbH (Site not responding. Last check: 2007-10-21)
		C 1176 - Organization and Reproduction of Turbanella cornuta (Gastrotricha)
		C 1177 - Forms of Adaptation by Marine Gastrotricha (Macrodasyoidea) to the Biotope of Sand Interstices
		C 1180 - Oviposition and Embryonic Development in the Comb Jelly Pleurobrachia pileus (Ctenophora)
	mkat.iwf.de /robot/Signatur_e_2.htm (4810 words)

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