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Topic: Myxozoa


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In the News (Mon 30 Nov 09)

  
 Myxozoa -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-08)
The Myxozoa are a group of (Click link for more info and facts about microscopic) microscopic, (Click link for more info and facts about parasitic) parasitic (A living organism characterized by voluntary movement) animals.
Many Myxozoa have a two-host lifecycle, involving a (Any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills) fish and an (Worms with cylindrical bodies segmented both internally and externally) annelid worm or (Marine or freshwater animals that form colonies of zooids) bryozoan.
Myxozoa are split into two classes, Malacosporea and (Click link for more info and facts about Myxosporea) Myxosporea.
www.absoluteastronomy.com /encyclopedia/M/My/Myxozoa.htm   (553 words)

  
 iqexpand.com   (Site not responding. Last check: 2007-10-08)
Myxozoa Domain Eukarya Kingdom Protista Section Myxozoa The myxozoans are parasitic protozoans that inhabit primarily the tissues and organ cavities of ectothermic vertebrates, especially fish.
Myxozoa Defining characteristics: parasites of invertebrates and lower vertebrates Life cycle: begins life inside of a host, feeds, leaves host experiences a free living stage in an aquatic area...
Myxozoa are mainly parasites of invertebrates and poikilothermic vertebrates (Table 1); they are characterized by multicellular spores, the walls of which consist of one, two or (rarely) three to six...
myxozoa.iqexpand.com   (488 words)

  
 The Myxozoa are a group of microscopic microscopic parasitic parasitic animal...
The "Myxozoa" are a group of microscopic microscopic, parasitic parasitic animal animals.
Many Myxozoa have a two-host lifecycle, involving a fish fish and an annelid annelid worm or bryozoa bryozoan.
On account of this the Myxozoa have been generally held to be extremely reduced cnidarians, and in particular have been considered close relatives of "Polypodium Polypodium", with some genetic support.
www.biodatabase.de /Myxozoa   (352 words)

  
 Myxozoa - Wikipedia, the free encyclopedia
The Greek roots of the name myxozoa express the ideas of "slime" or "mucus" (myx-) and "animal" (zo-).
In structure and appearance the polar capsules closely resemble the stinging cells of Cnidaria.
On account of this, biologists have generally regarded the Myxozoa as extremely reduced cnidarians, and in particular as close relatives of Polypodium, with some genetic support.
en.wikipedia.org /wiki/Myxozoa   (364 words)

  
 10.1007/s00436-002-0810-5   (Site not responding. Last check: 2007-10-08)
But despite their economic impact, the Myxozoa is a scientifically challenging group of organisms and their biology, life cycle, taxonomy and phylogeny have been controversial for many years.
However, controversy is still alive regarding the position of the Myxozoa in the animal phylogenetic tree.
Further molecular phylogeny studies targeting additional genes could possibly give a more accurate picture of Myxozoa origin, but a better understanding of the ultrastructure, life cycle, metabolism and host/parasite interactions is also necessary in order to clarify many puzzling biological features of this interesting group of parasites.
parasitology.informatik.uni-wuerzburg.de /login/n/h/j_002-0810-5.html.linked   (5800 words)

  
 Myxozoa
Ultrastructure of Buddenbrockia identifies it as a myxozoan and verifies the bilaterian origin of the Myxozoa.
Phylogenetic analysis of complete small subunit ribosomal RNA coding region of Myxidium lieberkuehni: evidence that Myxozoa are Metazoa and related to the Bilateria.
Myxozoa, Polypodium, and the origin of the Bilateria: The phylogenetic position of "Endocnidozoa" in light of the rediscovery of Buddenbrockia.
tolweb.org /tree?group=Myxozoa&contgroup=Animals   (501 words)

  
 Myxozoa in fishes   (Site not responding. Last check: 2007-10-08)
In the frame of a general study of Myxozoa parasites of inland waters in the south of Benin, 1785 fish samples were examined.
Parasites are located at different levels of this organ : cartilaginous tissue of the gill arch, conjonctive tissue covering the archs, primary gill filament, adductors muscles, fatty tissue and muscle situated at the tips of the archs, blood vessel crossing the gill arch and the are irrigating the gill filament.
Visible or suspected pathogenic effects of Myxozoa are different according to the type of gill ingraft, and result in the following: - the liquifaction of the cartilage of gill archs due to Myxobolus dossoui, M. sarotherodoni and M.
www.uga.edu /~protozoa/secabs/abstr/int/f/f18.HTML   (377 words)

  
 American Zoologist: Metazoan relationships on the basis of 18S rRNA sequences: A few years later...   (Site not responding. Last check: 2007-10-08)
The first diverging lineages are formed by the successive emergence of poriferans-which appear to be paraphyletic by including ctenophores-cnidarians, Placozoa and the Myxozoa, which are characterized by long branch lenghts.
Myxozoa are clearly separated from the triploblastic animals (Bilateria).
Although the SRC method has shown to be less sensitive to unequal evolutionary rates than classical methods (e.g., Van de Peer et al., 1996a, b; Van de Peer and De Wachter 1997b), we are not sure whether it can completely avoid the attraction effect of very long branches.
www.findarticles.com /p/articles/mi_qa3746/is_199812/ai_n8824743/pg_3   (1018 words)

  
 MYXOZOA   (Site not responding. Last check: 2007-10-08)
More recently, following recognition of profound differences in the ultrastructural composition of these parasites, Microspora Sprague, 1977 was raised to the rank of phylum and has been found, by molecular phylogenetic techniques, to be representative of 1 of the earliest branching eukaryote lineages (Vossbrinck et al., 1987; Sogin et al., 1989).
Systematists have failed to be decisive about myxozoan phylogenetic affinities, either finding the suggestion of a cnidarian connection to be preposterous, or considering the recent suggestion (Smothers et al., 1994) of a relationship with nematodes to be an obvious failure of molecular phylogenetics.
Here, we present both morphological and molecular phylogenetic evidence that the phylum must be abandoned because myxozoans have their origins in a clade of parasitic cnidarians.
research.amnh.org /users/siddall/myxozoa/myxo.html   (297 words)

  
 Marianne Koie
Ellipsomyxa gobii (Myxozoa: Ceratomyxidae) in the common goby Pomatoschistus microps (Teleostei: Gobiidae) uses Nereis spp.
(Myxozoa: Ceratomyxidae) in the common goby Pomatoschistus microps (Teleostei: Gobiidae) from Denmark.
Køie, M. Spirorchid [sic] and serpulid polychaetes are candidates as invertebrate hosts for Myxozoa.
www.mbl.ku.dk /MKoie   (1287 words)

  
 Myxozoa term life quote Resources from Life Insurance .Net
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www.lifeinsurance.net /LifeInsurance/Myxozoa__term_life_quote.htm   (424 words)

  
 [No title]   (Site not responding. Last check: 2007-10-08)
E-mail: aseeva_n@hotmail.com Myxozoa are parasites of marine and freshwater fishes.
New Myxozoa species for the Japan Sea were either undescribed or were described from southern fish species.
PICES XIV FIS_Paper-2577 Poster Myxozoa parasites in the fishes of the Japan Sea Nadezhda L. Aseeva Pacific Research Fisheries Centre (TINRO), 4 Shevchenko Alley, Vladivostok, 690950, Russia.
www.pices.int /meetings/annual/PICES14/BookOfAbstracts/Abstracts_FIS.doc   (6543 words)

  
 Animal - Open Encyclopedia   (Site not responding. Last check: 2007-10-08)
The Cnidaria (jellyfish, anenomes, corals, etc) are the main diploblastic phylum; the Ctenophora (comb jellies) may also belong here.
The Myxozoa, a group of microscopic parasites, have been considered reduced cnidarians but may instead be derived from the Bilateria.
The remaining forms comprise a group called the Bilateria, since they are bilaterally symmetric (at least to some degree), and are triploblastic.
open-encyclopedia.com /Animal   (1953 words)

  
 Learn more about Myxozoa in the online encyclopedia.   (Site not responding. Last check: 2007-10-08)
Learn more about Myxozoa in the online encyclopedia.
Enter a phrase or search word in the box below.
Hint: Play with putting spaces before and after your words to see the different results you get.
www.onlineencyclopedia.org /m/my/myxozoa.html   (372 words)

  
 [No title]
Pathology: The early stages of the infection are confined to the host stomach epithelium.
Margolis, L., McDonald, T.E., Whitaker, D.J. Assessment of the impact of the myxosporean parasite Ceratomyxa shasta on survival of seaward migrating juvenile chinook salmon, Oncorhynchus tshawytscha, from the Fraser River, British Columbia.
Myxosoma cerebralis (Myxozoa: Myxosporea) etologic agent of salmonid whirling disease requires tubificid worm (Annelida: Oligochaete) in its life cycle.
www.vims.edu /~jeff/MS566_myxozoa.doc   (1773 words)

  
 Fishdisease.net :: Prof. Aurélia Saraiva
(Myxozoa, Myxosporea, Myxobolidae) parasitizing fishes from Paraná river (Brazil).
Studies in Myxidium rhodei Léger, 1905 (Myxozoa: Myxosporea) on Chondrostoma polylepis from river Ave, north Portugal.
(Myxozoa) in Trachurus trachurus L. (Osteichthyes) in Portugal.
www.fishdisease.net /fd/users/user_show.php?id=167   (1194 words)

  
 Dr Mansour Elmatbouli Research Group
An understanding of the biology of Myxozoa, including their life cycle, is required to control and alleviate economic losses in fisheries and mariculture worldwide.
The life cycles of about 14 myxosporeans have been elucidated, all are freshwater and involve an alternate host, an annelid worm (either an oligochaete or a polychaete), in which they develop into an actinosporean which is infective to fish.
This prompted a revision of the classes within the phylum Myxozoa because an individual species can neither be assigned to two different classes nor, have two generic and specific names; one class, the Actinosporea, has been suppressed leaving a single class, the Myxosporea.
www.vetmed.uni-muenchen.de /zoofisch/elmatbouli_main.htm   (9063 words)

  
 Animal Parasitology
The systematic position of the Myxozoa are not precisely known.
Three traditional classes in the phylum, two of which (the hydrozoans and sea anemones) have parasitic members (although only a single taxon will be presented here).
Exactly where the Myxozoa fit in this taxonomic scheme has not yet been fully determined, but they appear to represent a fourth distinct group (1995, J Parasitol 81: 961-967).
www.k-state.edu /parasitology/classes/625cnidaria51.html   (1313 words)

  
 Incidental Finding of Myxobolus Spores (Protozoa: Myxozoa) in Stool Samples from Patients with Gastrointestinal ...
Incidental Finding of Myxobolus Spores (Protozoa: Myxozoa) in Stool Samples from Patients with Gastrointestinal Symptoms -- Boreham et al.
Myxozoa are commonly found as endoparasites in aquatic poikilotherm vertebrates (especially fish) and invertebrates.
Report of spores of Henneguya salminicola (Myxozoa) in human stool specimens: possible source of confusion with human spermatozoa.
jcm.asm.org /cgi/content/full/36/12/3728   (1656 words)

  
 Myxobolus sp., Another Opportunistic Parasite in Immunosuppressed Patients? -- Moncada et al. 39 (5): 1938 -- Journal ...
Parasites of the phylum Myxozoa have been described in lower vertebrate hosts, mainly in teleostean fish and in some amphibians
This is the third report of spores of a parasite belonging to the phylum Myxozoa in human fecal samples and the first one
The demise of a phylum of protists: phylogeny of Myxozoa and other parasite cnidaria.
jcm.asm.org /cgi/content/full/39/5/1938   (1543 words)

  
 Animals
Please visit the official version of this page, which is available here.
This tree diagram shows the relationships between several groups of organisms.
Origin of the Eumetazoa: Testing ecological predictions of molecular clocks against the Proterozoic fossil record.
tolweb.org /tree?group=Animals&contgroup=Eukaryotes   (1309 words)

  
 SYSTEMATIC BIOLOGY
Please consult The Major Clades of the Animal Kingdom for some views on the relationships of the radiate phyla with each other and with the other phyla of the animal kingdom.
I have included the Myxozoa within the Radiata because it is most certainly a highly reduced Cnidarian.
Traditionally, it has been considered a "protozoan" and before the demise of the taxon, Protozoa, was a member of the Sporozoa.
comenius.susqu.edu /bi/202/Animals/RADIATA/RADIATATAX.htm   (370 words)

  
 Myxozoa Network   (Site not responding. Last check: 2007-10-08)
Submitted presentations to the EAFP meeting dealing with Myxozoa.
Round table: discussion of topics presented during the day; also, advancement of the Myxozoa Network issues.
All submitted posters on Myxozoa will be sited together as a group near or at the venue where the workshop will take place.
www.iats.csic.es /~patolog2/eafp_schedule.htm   (74 words)

  
 Presentations & publications
McGurk C. Morris D.J., Auchinachie N.A. and Adams A. (2005) Development of Tetracapsuloides bryosalmonae (Myxozoa: Malacosporea) in bryozoan hosts (as examined by light microscopy) and quantitation of infective dose to rainbow trout (Oncorhynchus mykiss).
McGurk C. (2005) Culture of malacosporeans (Myxozoa) and development of control strategies for proliferative kidney disease.
McGurk C., Morris D.J., Bron J.E. and Adams A. (2005) The morphology of Tetracapsuloides bryosalmonae (Myxozoa: Malacosporea) spores released from Fredericella sultana (Bryozoa: Phylactolaemata).
staff.stir.ac.uk /charles.mcgurk/presentations.htm   (474 words)

  
 Buddenbrockia plumatellae   (Site not responding. Last check: 2007-10-08)
A major outcome of this work has been the discovery that Buddenbrockia, a wormlike endoparasite of freshwater bryozoans, is a myxozoan.
This discovery has finally allowed one of the last of the enigmatic animal taxa to be assigned to a phylum.
Buddenbrockia also demonstrates that an extreme level of degeneracy characterises the rest of the Myxozoa which consequently have been misclassified as protists for most of the time that they have been recognised.
www.uga.edu /~protozoa/secabs/abstr/int/gb6/gb617.html   (235 words)

  
 Fishdisease.net :: Mr. Dennis Kallert
The parasitic organism causing WD is the myxosporean Myxobolus cerebralis (HOFFMAN, 1990) (Myxozoa).
SIDDAL, M. 1995 The demise of a phylum of protists: phylogeny of Myxozoa and other parasitic Cnidaria.
USPENSKAIA, A.V., RAIKOVA, E. 2001 Cytological aspects of similarity and difference of Myxozoa and Cnidaria.
www.anicca.net /fd/users/user_show.php?id=79   (602 words)

  
 School of Animal and Microbial Sciences   (Site not responding. Last check: 2007-10-08)
My research aims to understand the ecology and evolution of aquatic invertebrates with life cycles that entail prolonged phases of asexual reproduction by focusing on the metapopulation biology of freshwater bryozoans; the evolution, ecology and life cycles of myxozoan parasites, and the evolution of colony form.
Genetic basis for the reduction of anatomical complexity in Myxozoa
Anderson, C.L., Canning, E.U. and Okamura, B. Molecular data implicate bryozoans as hosts for PKX (Phylum Myxozoa) and identify a clade of bryozoan parasites within the Myxozoa.
www.lifesciences.reading.ac.uk /staff/staffID=40   (1319 words)

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