| bonamia perspora n. sp. (haplosporidia), a parasite of the oyster ostreola equestris, is the first bonamia species known to produce spores. | examination of the oyster ostreola equestris as a potential reservoir host for a species of bonamia discovered in crassostrea ariakensis in north carolina (nc), usa, revealed a second novel bonamia sp. histopathology, electron microscopy, and molecular phylogenetic analysis support the designation of a new parasite species, bonamia perspora n. sp., which is the first bonamia species shown to produce a typical haplosporidian spore with an orifice and hinged operculum. spores were confirmed to be ... | 2006 | 16872291 |
| spore ornamentation of haplosporidium nelsoni and haplosporidium costale (haplosporidia), and incongruence of molecular phylogeny and spore ornamentation in the haplosporidia. | spore ornamentation of haplosporidium nelsoni and haplosporidium costale was determined by scanning electron microscopy. for h. nelsoni, the spore surface was covered with individual ribbons that were tightly bound together and occurred as a single sheet. in some spores, this layer was overlaid with a network of branching fibers, about 0.05 microm in diameter, which often was dislodged from the spore at the aboral pole. for h. costale, ornamentation consisted of a sparse network of branching fib ... | 2006 | 17304810 |
| inter-relationships of haplosporidians deduced from ultrastructural studies. | we reviewed papers reporting haplosporidian ultrastructure to compare inter-relationships based on ultrastructure with those based on molecular data, to identify features that may be important in haplosporidian taxonomy, and to consider parasite taxonomy in relation to host taxonomy. there were links between the following: (1) the plasmodia of an abalone parasite, haplosporidium nelsoni and urosporidium crescens in the release of haplosporosomes; (2) h. costale and h. armoricanum in haplosporoso ... | 2009 | 19402456 |
| observation of a bonamia sp. infecting the oyster ostrea stentina in tunisia, and a consideration of its phylogenetic affinities. | the small non-commercial oyster ostrea stentina co-occurs with commercially important ostrea edulis in the mediterranean sea, yet its disposition with respect to the destructive pathogens bonamia ostreae and marteilia refringens is unknown. we began an evaluation of the bonamia spp. infection status of o. stentina from hammamet, tunisia, in june 2007 using polymerase chain reaction diagnostics followed by histology and in situ hybridization. of 85 o. stentina sampled, nine were pcr-positive for ... | 2010 | 20036670 |