Abstract
Abstract Myxidium commersoni (species nova) is described from the gallbladder of white sucker Catostomus commersoni in Nova Scotia. The ovoid to rectangular plasmodium is relatively large (up to 2.5 mm long) compared with that of other described species, and it is only loosely associated with the gallbladder wall. Fixed specimens have a concave surface with anastomosing microvillar projections and a convex surface thrown into ridges that form a honeycomb pattern. The ectoplasm is composed of an outer zone of fine vesicles and an inner zone of sunken nuclei that are surrounded by vesicular mitochondria and endoplasmic reticulum. The endoplasm contains developing spores in a loose network of fine ectoplasmic extensions. Spores are ellipsoidal with rounded or bluntly pointed ends in front view, and they are moderately S-shaped in side view. Spores measure 10–12 μm long, 5.5–7 μm wide, and 5.0–5.5 μm thick, and each has 7–12 longitudinal striations. Each polar capsule is 2–4 μm long, and the polar filament ha...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
