| molecular data implicate bryozoans as hosts for pkx (phylum myxozoa) and identify a clade of bryozoan parasites within the myxozoa. | proliferative kidney disease (pkd), a condition associated with high mortality in salmonid fish, represents an abnormal immune response to the presence of an enigmatic myxozoan, which has been designated simply as pkx organism because its generic and specific status are obscure. phylogenetic analyses of partial sequences of the 18s rdna of pkx and of myxozoan parasites infecting the bryozoans cristatella mucedo, pectinatella magnifica and plumatella rugosa, including the previously named tetraca ... | 1999 | 10633916 |
| trichonosema algonquinensis n. sp. (phylum microsporidia) in pectinatella magnifica (bryozoa: phylactolaemata) from algonquin park, ontario, canada. | a new species of microsporidian, trichonosema algonquinensis, is described from a freshwater bryozoan, pectinatella magnifica from ontario, canada. the parasite develops in epithelial cells and appears as white, spherical masses throughout the tissues. trichonosema algonquinensis is diplokaryotic, diploblastic and undergoes development in direct contact with the cytoplasm of the host cell. mature spores are ovoid, tapered at one end, and measure 8.5 +/- 0.3 x 4.4 +/- 0.1 microm. the polar filame ... | 2004 | 15352320 |
| first molecular estimate of cyclostome bryozoan phylogeny confirms extensive homoplasy among skeletal characters used in traditional taxonomy. | the cyclostomata are the only extant representatives of the class stenolaemata, an ancient group of exclusively marine bryozoans. previous cladistic analyses of cyclostome bryozoans, based exclusively on skeletal characters, revealed extensive homoplasy amongst morphological traits. this study presents the first molecular phylogeny for cyclostomata and confirms the previous findings of homoplasy. almost complete lsr and ssrdna fragments were sequenced for 22 taxa of cyclostome bryozoans, plus th ... | 2009 | 19236933 |
| an insight into antimicrobial activity of the freshwater bryozoan pectinatella magnifica. | the antimicrobial activity of five crude extracts of the freshwater bryozoan pectinatella magnifica (leidy, 1851) was evaluated in vitro for the first time. p. magnifica acetone extract exhibited the highest antibacterial activity (minimum inhibitory concentrations (mic) 0.004-0.350 mg/ml and mbc 0.007-0.500 mg/ml), while its methanol extract showed the most promising antifungal activity (mic 0.03-0.12 mg/ml and mfc 0.06-0.25 mg/ml). furthermore, at a concentration of 0.25 mic, the methanol extr ... | 2016 | 26252786 |