Results 121 to 130 of about 908 (173)

Biodiversity and Evolution of the Myxozoa

2003
Myxozoans (phylum Myxozoa) are metazoan parasites utilizing invertebrate and (mainly) aquatic vertebrate hosts. They have in common with cnidarians the possession of virtually identical, highly complex organelles, namely the polar capsules in myxozoan spores, serving for attachment to new hosts and the nematocysts in surface epithelia of cnidarians ...
Elizabeth U, Canning, Beth, Okamura
openaire   +2 more sources

Genomic insights into the evolutionary origin of Myxozoa within Cnidaria [PDF]

Proceedings of the National Academy of Sciences of the United States of America, 2015
Significance Myxozoans are a diverse group of microscopic parasites that infect invertebrate and vertebrate hosts. The assertion that myxozoans are highly reduced cnidarians is supported by the presence of polar capsules, which resemble cnidarian stinging structures called “nematocysts.” Our study characterizes ...
Nimrod Rubinstein, Dorothee Huchon, Paulyn Cartwright   +2 more
exaly   +4 more sources

Classification and Phylogenetics of Myxozoa

2015
Myxozoans evolved as an endoparasitic radiation of cnidarians exploiting invertebrate and vertebrate (primarily fish) hosts in freshwater and marine environments. Currently, there are some 2,200 nominal species classified to 64 genera and 17 families. These groupings are mainly based on spore morphology.
Ivan Fiala, Pavla Bartošová-Sojková, Christopher M. Whipps   +2 more
openaire   +1 more source

The Road To Cnidaria: History of Phylogeny of the Myxozoa

Journal of Parasitology, 2015
Myxozoans are a clade of highly derived cnidarians. The phylogenetic identity of these extremely simplified parasites of aquatic vertebrates and invertebrates had long been uncertain, with all early classifications designating Myxozoa as protists. Though suggestions were frequently made that the infective spores of these parasites are multicellular and
Jonathan, Foox, Mark E, Siddall
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Cnidarian Origins of the Myxozoa

2015
Now that we have strong evidence for the phylogenetic placement of Myxozoa within the Cnidaria it is of great interest to explore their evolutionary history. In particular, what cnidarian features may have facilitated the transition to an endoparasitic lifestyle and can we identify a potential cnidarian sister group?
Beth Okamura, Alexander Gruhl, Abigail J. Reft   +2 more
openaire   +1 more source

Protistan parasites and myxozoa

2005
AbstractCoverage of 'lower' organisms in this book is restricted to protistan and metazoan parasites and excludes fungi and other organisms such as bacteria and viruses, many of which are parasitic. The boundary between fungi and protistans is not well-defined. Protistan taxonomy, based on molecular phylogeny, is continually changing.
openaire   +3 more sources

Supplemental Description ofMyxobolus squamalis(Myxozoa)

Journal of Parasitology, 2013
Myxobolus squamalis is a myxozoan skin parasite first reported from rainbow trout (Oncorhynchus mykiss). Identification of the parasite based on myxospore morphology is unreliable because M. squamalis is similar to several other myxobolids that share host species and geographic ranges. The only ssrRNA gene sequence available for M.
Tamsen M, Polley, Stephen D, Atkinson, Gerald R, Jones, Jerri L, Bartholomew   +3 more
openaire   +2 more sources

Myxozoa of Deep-Sea Fishes in the Northwestern Atlantic

The Journal of Parasitology, 1990
The gall bladder of 5 species of deep-water fishes (Coryphaenoides armatus, Coryphaenoides rupestris, Macrourus berglax, Antimora rostrata, and Synaphobranchus kaupi) from the New York Bight and Carson Canyon areas in the northwest Atlantic were examined for myxozoan parasites.
W, Threlfall, R A, Khan
openaire   +2 more sources

Sacculogenesis of Buddenbrockia plumatellae (Myxozoa) within the invertebrate host Plumatella repens (Bryozoa) with comments on the evolutionary relationships of the Myxozoa

International Journal for Parasitology, 2007
Members of the phylum Myxozoa are obligate parasites, primarily of aquatic organisms. Their phylogeny has remained problematic, with studies placing them within either the Bilateria or Cnidaria. The discovery that the enigmatic Buddenbrockia plumatellae is a myxozoan that possesses distinct bilaterian features appeared to have finally resolved the ...
D J, Morris, A, Adams
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Myxozoa, Microspora, and Ascetospora

1987
For a long time classified as part of the “Sporozoa”, the three groups Myxozoa, Microspora, and Ascetospora, are now each accorded independence as phyla. All these organisms produce resistant, thickwalled spores often containing one or more long polar filaments which are extruded when development in a new host occurs.
J. P. Kreier, J. R. Baker
openaire   +1 more source