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Severe mortality in wild Atlantic salmon Salmo salar due to proliferative kidney disease (PKD) caused by Tetracapsuloides bryosalmonae (myxozoa).
TLDR
It is concluded that this myxozoan transmitted from bryozoans was the main cause of the observed mortality in salmon fry in 2006 and that T. bryosalmonae is the most likely explanation for this decline.
Occurrence of postmortem myoliquefactive kudoosis in Atlantic mackerel, Scomber scombrus L., from the North Sea.
TLDR
Based on comparison of myxospore dimensions and analysis of the nuclear small subunit (SSU) ribosomal DNA, the present Kudoa species is assigned to Kudo a thyrsites, however, due to the species' apparently very wide geographical distribution and host range, its varying effect on different fish host species, the taxonomic status of K. thyrsite appears not to be fully resolved.
Spironucleus species: economically-important fish pathogens and enigmatic single-celled eukaryotes
TLDR
In vitro culture provides a convenient source of flagellates for biochemical and physiological research, allowing the identification of novel parasite-specific molecular pathways such as H2 production within Spironucleus sp.
Large genomic differences between the morphologically indistinguishable diplomonads Spironucleus barkhanus and Spironucleus salmonicida
TLDR
Genomic traits such as codon usage, frequency of allelic sequence variation, and genome size have changed considerably between S. barkhanus and S. salmonicida, indicating extensive divergent genome evolution within diplomonads.
A survey of the distribution of the PKD-parasite Tetracapsuloides bryosalmonae (Cnidaria: Myxozoa: Malacosporea) in salmonids in Norwegian rivers - additional information gleaned from formerly
TLDR
Proliferative kidney disease (PKD) caused by T. bryosalmonae and PKD-induced mortality has been observed in salmonids in several Norwegian rivers and it can be speculated that more PKD outbreaks will occur as a result of climate change.
Ultrastructure and molecular diagnosis of Spironucleus salmonis (Diplomonadida) from rainbow trout Oncorhynchus mykiss in Germany.
TLDR
It is suggested the lobes form, via hydrostatic pressure on the nucleoplasm, in response to the beat of the anterior-medial flagella, providing stability in the region of the cell exposed to internal mechanical stress.
SSU rRNA gene sequence reveals two genotypes of Spironucleus barkhanus (Diplomonadida) from farmed and wild Arctic charr Salvelinus alpinus.
TLDR
The high degree of sequence similarity between S. barkhanus from farmed Arctic charr, Chinook and Atlantic salmon indicates that systemic spironucleosis may be caused by specific strains/variants of this parasite.
Wild arctic char Salvelinus alpinus and trout Salmo trutta: hosts and reservoir of the salmonid pathogen Spironucleus salmonicida (Diplomonadida; Hexamitidae).
TLDR
Wild salmonids are reservoir hosts of Spironucleus salmonicida, a diplomonad flagellate known to cause systemic infections in farmed salmonids, which was identified in both wild Arctic char and brown trout from the lakes used as water sources by the smolt farm, suggesting that the farmed fish were exposed to this pathogen before transfer to the sea.
Real-time PCR detection of Parvicapsula pseudobranchicola (Myxozoa: Myxosporea) in wild salmonids in Norway.
TLDR
Using the described assay, P. pseudobranchicola was detected in both farmed and wild salmonids, indicating that wild Atlantic salmon, sea trout, Salmo trutta, and Arctic char, Salvelinus alpinus, may be natural hosts of the parasite.
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