| occurrence of actinosporean stages (myxozoa) in the nera river system (umbria, central italy). | we investigate the oligochaetes populations in the nera river systems (central italy) in order to highlight the occurrence of actinosporean stages in this natural environment. the survey was carried out during 2 years of monitoring 24 stations upstream and downstream the 12 trout farm along the rivers. in four of the 24 sites, oligochaetes releasing echinactinomyxon and aurantiactinomyxon types spore were collected. the actinospores observed were described morphologically, by transmission electr ... | 2009 | 19690888 |
| molecular studies on the seasonal occurrence and development of five myxozoans in farmed salmo trutta l. | five myxozoan species, tetracapsuloides bryosalmonae, sphaerospora truttae, chloromyxum schurovi, chloromyxum truttae and a myxobolus species were detected in farmed brown trout, salmo trutta l. from central scotland. using pcr and in situ hybridization, this study investigated the seasonal occurrence and tissue location of these species in young of the year brown trout. c. schurovi, c. truttae and myxobolus sp. were first detected in brown trout in april, 2 months before t. bryosalmonae and s. ... | 2006 | 16216135 |
| molecular relationships and phylogeny in a community of myxosporeans and actinosporeans based on their 18s rdna sequences. | the community of myxosporeans and actinosporeans inhabiting a typical scottish highland stream and the outflow area of an adjacent salmon hatchery was analysed on the basis of their 18s rdna sequences. nine myxosporeans belonging to the genera sphaerospora, chloromyxum, zschokkella, myxidium, hoferellus and myxobilatus were identified from mature spores in different organs of the fish species present. twelve actinosporean types belonging to the collective groups of neoactinomyxum, aurantiactinom ... | 2004 | 15380681 |
| the phylogeny of marine and freshwater species of the genus chloromyxum mingazzini, 1890 (myxosporea: bivalvulida) based on small subunit ribosomal rna gene sequences. | the small subunit ribosomal rna gene (ssu rdna) of two freshwater and one marine species of the genus chloromyxum mingazzini, 1890 were sequenced. the ssu rdna trees obtained show the phylogenetic position of the marine species chloromyxum leydigi mingazzini, 1890 to be at the base of the freshwater clade, being well supported by a high bootstrap value. chloromyxum cyprini fujita, 1927 is closely related to chloromyxum truttae léger, 1906 and they represent a sister branch to raabeia sp., myxidi ... | 2004 | 15357399 |
| [scanning electron microscopy in studies of parasitic protozoa of fish]. | it is expedient to use the scanning electron microscopy for studies of parasitic protozoa of fishes. the structure of myxosporidians (henneguya psorospermica, myxidium rhodei, chloromyxum truttae) and chilodenella cyprini was analysed. microphotos taken by "cwikscan-100-4" are given. the technique of the preparation of the object for scanning microscopy with regard for its structure is discussed. | 1977 | 909724 |