Gyrodactylus kobayashii
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA564877 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR7662980_1.fastq.gz | Fastqsanger.gz | |||
| SRR7662980_2.fastq.gz | Fastqsanger.gz | |||
| SRR7662981_1.fastq.gz | Fastqsanger.gz | |||
| SRR7662981_2.fastq.gz | Fastqsanger.gz | |||
| SRR7662982_1.fastq.gz | Fastqsanger.gz |
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Project description:Gyrodactylus kobayashii Transcriptome or Gene expression
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Project description:Gyrodactylus kobayashii Transcriptome or Gene expression
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Project description:Gyrodactylus salaris Transcriptome or Gene expression
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Project description:The widespread resistance of parasitic worms to commonly used anthelmintics highlights the urgent need for development of new effective chemicals. Arctigenin (ARC) is a natural lignin compound that exhibits excellent anthelminthic efficacy against infections of Gyrodactylus, but knowledge about the mechanism of action is far from clear. In the present study, high-throughput RNA-sequencing was integrated with iTRAQ quantitative proteomics analysis to explore the anthelmintic mechanism and possible molecular targets of ARC against Gyrodactylus kobayashii.
2020-05-26 | PXD010913 | Pride
Project description:Gyrodactylus bullatarudis isolate:Rox2016 Genome sequencing and assembly
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Project description:Gyrodactylus salaris strain:Lier strain Genome sequencing and assembly
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Project description:The salmon parasite Gyrodactylus salaris Malmberg, 1957 has caused high mortalities in many Atlantic salmon, Salmo salar, populations, mainly in Norway. The parasite is also present in several countries across mainland Europe, principally on rainbow trout, Oncorhynchus mykiss, where infections do not seem to result in mortalities. There are still European countries where there are potential salmonid hosts for G. salaris but where the occurrence of G. salaris is unknown, mainly due to lack of investigations and surveillance. Gyrodactylus salaris is frequently present on rainbow trout in low numbers and pose a risk of infection to local salmonid populations if these fish are subsequently translocated to new localities.Farmed rainbow trout Oncorhynchus mykiss (n?=?340), brook trout, Salvelinus fontinalis (n?=?186), and brown trout, Salmo trutta (n?=?7), and wild brown trout (n?=?10) from one river in Romania were sampled in 2008 and examined for the presence of Gyrodactylus spp. Alltogether 187 specimens of Gyrodactylus spp. were recovered from the fish. A subsample of 76 specimens representing the different fish species and localities were subjected to species identification and genetic characterization through sequencing of the ribosomal internal transcribed spacer 2 (ITS2) and mitochondrial cytochrome c oxidase subunit 1 (cox1).Two species of Gyrodactylus were found, G. salaris and G. truttae Gläser, 1974. This is the first time G. salaris is diagnosed in Romania. Gyrodactylus salaris was found to infect rainbow trout, brown trout and brook trout in eight of the 12 farms examined. The prevalence and intensity of infections were generally low in all farms. Gyrodactylus truttae was present on brook trout in one farm and on wild brown trout in the river studied. This also represents the first record of this parasite in Romania. Analyses of sequences of the cox1 gene of G. salaris from Romania revealed four haplotypes, all previously undescribed. While it is not unlikely that the infections in Romanian fish farms originate directly from imported rainbow trout, the current data is not sufficient to conclude on this and does not exclude that the infections can originate from hosts in the local water systems. The study shows that there are still unknown populations and variants (haplotypes) of G. salaris present in European rainbow trout aquaculture, all or many of them with unknown biological characteristics such as host specificity and virulence. As some strains might be pathogenic to Atlantic salmon, the importance of carrying out surveillance and keeping a high focus on control with import and export of live fish for aquaculture purposes is important.Gyrodactylus salaris and G. truttae are for the first time found on salmonids in Romania. All mitochondrial haplotypes recovered were previously undescribed and this indicates that there is still an unknown diversity of this parasite present in localities not previously examined. The virulence of the haplotypes found in Romania is unknown and requires establishing.
| S-EPMC4981988 | biostudies-literature
Project description:BackgroundGyrodactylus salaris is a monogenean, which has collapsed tens of wild Atlantic salmon populations. One of the means of preventing the spread of the parasite is the disinfection of the fishing equipment, which is used in the rivers having susceptible salmon populations. Little is known about the dosage of disinfectants against G. salaris. There are not standards for the testing of disinfectants against multicellular parasites. The present investigation developed a method to test disinfectants and examined the effectiveness of heated water and a commercially available disinfectant (Virkon S) in killing G. salaris. Individual G. salaris worms were followed under the microscope during treatment with heated water or Virkon S disinfectant blend. The logarithm of the time needed to kill the parasite was used as a dependent variable in linear regression. The upper 99.98 % prediction line for the dependent variable was used to obtain a value resembling the time needed for a 4 log reduction of the microbial pathogen, which is commonly used as a criterion for disinfectants. Also 6 log reduction was applied.ResultsExposure to a relatively low temperature was found to kill the parasite. Even 5-50 min treatment (=10-100 times the 99.98 % upper prediction value) with heated water at 40 °C might be used. This would enable the utilisation of hot tap water in the disinfection of fishing gear. The present practice of 1 % Virkon S for 15 min was also found to kill the parasite.ConclusionsThe follow-up of single parasites of a test population and the use of the calculated upper predictive line in the regression analysis offers a method to analyse the effects of disinfectants on parasites like G. salaris. The results of our tests give possibilities for using disinfection methods, which may be more acceptable by the fishermen than the present ones.
| S-EPMC4804523 | biostudies-literature