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Nadelspora canceri N.G., N.sp., an unusual microsporidian parasite of the dungeness crab, Cancer magister
Olson, R.E.; Tiekotter, K.L.; Reno, P.W. (1994). Nadelspora canceri N.G., N.sp., an unusual microsporidian parasite of the dungeness crab, Cancer magister. J. Eukaryot. Microbiol. 41(4): 349-359
In: Journal of Eukaryotic Microbiology. Society of Protozoologists: Lawrence, Kan . ISSN 1066-5234, more
Peer reviewed article  

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    Electron microscopy; Endoparasites; Histology; Marine crustaceans; Marine organisms; New genera; New species; Protozoan diseases; Taxonomy; Ultrastructure; Cancer magister Dana, 1852 [WoRMS]; Microsporidia [WoRMS]; Marine

Authors  Top 
  • Olson, R.E.
  • Tiekotter, K.L.
  • Reno, P.W.

    The microsporidium Nadelspora canceri n. g., n. sp., is described from the striated musculature of the Dungeness crab (Cancer magister) in Oregon, USA. The needle-shaped spores were rounded anteriorly, tapered to a posterior point and measured 7.1-11.8 x 0.2-0.3 mu m in fixed preparations. The extremely narrow spore diameter prevented observation of morphological details at the light microscopic level and ultrastructural details of mature spores were difficult to resolve. Meronts were not observed and the monokaryotic merozoites and sporonts were not contained within either parasitophorous or sporophorous vesicles. Sporonts were disporoblastic and gave rise to monokaryotic sporoblasts that became narrow and elongate as they developed into immature spores with a developing polar filament. The nucleus was not clearly resolved in mature spores and may have been surrounded by the lamellar polaroplast. The polar filament was of nearly uniform diameter throughout most of its length and ended abruptly about three-fourths of the distance from the anterior end of the spore.

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