| molecular markers for gyrodactylids (gyrodactylidae: monogenea) from five fish families (teleostei). | thirty-one gyrodactylid species from five families of freshwater fish were examined and variable region v4 of the 18s small subunit ribosomal rna gene and ribosomal rna internal transcribed spacers its1 and its2 were sequenced. both the v4 region and spacers its1 and its2 proved useful for gyrodactylid diagnosis. sequences of these fragments exhibited interspecific variations and allowed clear determination at the species level. in some cases, the length of the its1 pcr fragment provided useful ... | 2001 | 11336756 |
| the gyrodactylidae fauna of rainbow trout oncorhynchus mykiss walbaum 1792 in the rogg breeding pound in bavaria, germany. | in july 2005, 107 rainbow trout in age 1+ from a salmonid farm in southern germany situated in the southern tributary area of the danube river were examined. the aim of this study was to determine the gyrodactylid species found on rainbow trout and to identify their location on the host's body. in total, 291 specimens from genus gyrodactylus were collected. the most abundantly occurring species was gyrodactylus truttae (181 specimens), whilst the others were less abundant. for the first time in ... | 2009 | 18975000 |
| the first report of gyrodactylus salaris malmberg, 1957 (platyhelminthes, monogenea) on italian cultured stocks of rainbow trout (oncorhynchus mykiss walbaum). | the monogenean gyrodactylus salaris malmberg, 1957 is considered one of the most important parasites of wild salmonids in the european community due to the heavy ecological and economical damage it has inflicted on atlantic salmon (salmo salar) parr populations. rainbow trout (oncorhynchus mykiss) is susceptible to g. salaris and can act as a suitable carrier host and, consequently, its trade in eu territory is restricted in relation to the status of "recognized free" zones. despite the economic ... | 2009 | 19700245 |
| Morphometric and molecular characterization of Gyrodactylus teuchis Lautraite, Blanc, Thiery, Daniel & Vigneulle, 1999 (Monogenea: Gyrodactylidae) from an Austrian brown trout population. | Gyrodactylus teuchis is a widespread parasite of wild and farmed salmonids throughout Europe. It has been frequently confused with the notifiable pathogen G. salaris, to which it bears a striking morphological similarity. The species is frequently referred to as 'cryptic', and diagnoses are primarily based on molecular evidence. We provide the first comprehensive re-description of G. teuchis from a natural wild brown trout population in the Danube watershed, based on the state of the art morphom ... | 2011 | 21875685 |
| redescription of gyrodactylus teuchis lautraite, blanc, thiery, daniel & vigneulle, 1999 (monogenea: gyrodactylidae); a species identified by ribosomal rna sequence. | molecular and morphological features of gyrodactylus specimens from oncorhynchus mykiss, salmo trutta and salmo salar were examined. sequences from variable region v4 of the small subunit ribosomal rna gene and the ribosomal rna internal transcribed spacers, produced by the frs marine laboratory, revealed that these were not the same as other well-characterised gyrodactylus that are common on european salmonids and were in fact a distinct species. initial morphological examination of the opistha ... | 2001 | 11252277 |
| a new gyrodactylus strain on brown trout (salmo trutta) in jänisjärvi, russian karelia, and a literature revision of salmonid parasites of the genus gyrodactylus in north-western russia and adjacent areas. | a gyrodactylus parasite infected juveniles of brown trout (salmo trutta l.) in a hatchery in lake janisjarvi, russian karelia. molecular identification by its1-5.8s-its2 of ribosomal dna indicated that the infection was caused by a non-segregating hybrid clone between unknown gyrodactylus species and gyrodactylus teuchis lautraite, blanc, thiery, daniel & vigneulle, 1999, described from brown trout collected in france. the mitochondrial co1 was sequenced from the hybrid, but it is not available ... | 2014 | 26204023 |
| co-speciation of the ectoparasite gyrodactylus teuchis (monogenea, platyhelminthes) and its salmonid hosts. | co-speciation is a fundamental concept of evolutionary biology and intuitively appealing, yet in practice hard to demonstrate as it is often blurred by other evolutionary processes. we investigate the phylogeographic history of the monogenean ectoparasites gyrodactylus teuchis and g. truttae on european salmonids of the genus salmo. mitochondrial cytochrome oxidase subunit 1 and the nuclear ribosomal internal transcribed spacer 2 were sequenced for 189 gyrodactylus individuals collected from 50 ... | 2015 | 26080029 |
| occurrence of gyrodactylids on wild atlantic salmon, salmo salar l., in danish rivers. | three hundred and one parr of wild salmon, salmo salar l., from three river systems in denmark were examined in december 2005 and august 2006 for gyrodactylid infections. the species determination was done by morphological analyses of the opisthaptoral hard parts and molecular analyses of the internal transcribed spacer (its) region using pcr restriction fragment length polymorphism (rflp) and sequencing. five species of the genus gyrodactylus were found: gyrodactylus derjavini, gyrodactylus teu ... | 2008 | 18234020 |