Isolation and identification of Saprolegnia spp. from infected sturgeon caviar
Saprolegniosis is considered one of the most common fungal diseases in freshwater aquaculture, affecting eggs and fish of all ages, and is causing great economic losses worldwide. In sturgeon aquaculture, highest harm is caused by caviar saprolegniosis (byssus), a mycotic disease of caviar, which is...
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ftzenodo:oai:zenodo.org:7679902 2023-05-15T18:19:34+02:00 Isolation and identification of Saprolegnia spp. from infected sturgeon caviar Anokhina, Ekaterina Tolkacheva, Anna Priakhina, Nina Syromiatnikov, Mikhail Korneeva, Olga 2023-01-30 https://zenodo.org/record/7679902 https://doi.org/10.5281/zenodo.7679902 unknown doi:10.5281/zenodo.7679901 https://zenodo.org/record/7679902 https://doi.org/10.5281/zenodo.7679902 oai:zenodo.org:7679902 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Acta Biologica Sibirica 9 13-21 Aquaculture phylogenetic analysis saprolegniosis sequencing info:eu-repo/semantics/article publication-article 2023 ftzenodo https://doi.org/10.5281/zenodo.767990210.5281/zenodo.7679901 2023-03-11T04:43:10Z Saprolegniosis is considered one of the most common fungal diseases in freshwater aquaculture, affecting eggs and fish of all ages, and is causing great economic losses worldwide. In sturgeon aquaculture, highest harm is caused by caviar saprolegniosis (byssus), a mycotic disease of caviar, which is characterized by damage through saprolegnium fungi during hatchery incubation. The main infectious agents are aquatic mold fungi of the genus Saprolegnia spp. A sample of water mold was isolated from infected eggs of a hybrid of Russian sturgeon (Acipenser gueldenstaedtii) with kaluga (Huso dauricus) with characteristic signs of the disease. Microscopic examination of an isolated oomycete revealed morphological features characteristic of Saprolegnia spp., but no oogonia or antheridia were found, which complicates further species identification. To identify the isolated pathogen, molecular tools such as PCR and sequencing of a DNA section including 18S rRNA, ITS1, 5.8S rRNA, ITS2 and 28S rRNA were used to distinguish between different species of aquatic molds. Analysis of the obtained nucleotide sequence showed more than 99% identity with the previously known DNA sequences of S. parasitica. According to the results of phylogenetic analysis, the obtained nucleotide sequence was in the same group with the known sequences of S. parasitica and separated from other species belonging to S. ferax, S. diclina, S. delica, and S. australis. This work was supported by the Russian Foundation for Basic Research, project No 20-08-01149 A. Article in Journal/Newspaper Sibirica Zenodo |
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Aquaculture phylogenetic analysis saprolegniosis sequencing |
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Aquaculture phylogenetic analysis saprolegniosis sequencing Anokhina, Ekaterina Tolkacheva, Anna Priakhina, Nina Syromiatnikov, Mikhail Korneeva, Olga Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
topic_facet |
Aquaculture phylogenetic analysis saprolegniosis sequencing |
description |
Saprolegniosis is considered one of the most common fungal diseases in freshwater aquaculture, affecting eggs and fish of all ages, and is causing great economic losses worldwide. In sturgeon aquaculture, highest harm is caused by caviar saprolegniosis (byssus), a mycotic disease of caviar, which is characterized by damage through saprolegnium fungi during hatchery incubation. The main infectious agents are aquatic mold fungi of the genus Saprolegnia spp. A sample of water mold was isolated from infected eggs of a hybrid of Russian sturgeon (Acipenser gueldenstaedtii) with kaluga (Huso dauricus) with characteristic signs of the disease. Microscopic examination of an isolated oomycete revealed morphological features characteristic of Saprolegnia spp., but no oogonia or antheridia were found, which complicates further species identification. To identify the isolated pathogen, molecular tools such as PCR and sequencing of a DNA section including 18S rRNA, ITS1, 5.8S rRNA, ITS2 and 28S rRNA were used to distinguish between different species of aquatic molds. Analysis of the obtained nucleotide sequence showed more than 99% identity with the previously known DNA sequences of S. parasitica. According to the results of phylogenetic analysis, the obtained nucleotide sequence was in the same group with the known sequences of S. parasitica and separated from other species belonging to S. ferax, S. diclina, S. delica, and S. australis. This work was supported by the Russian Foundation for Basic Research, project No 20-08-01149 A. |
format |
Article in Journal/Newspaper |
author |
Anokhina, Ekaterina Tolkacheva, Anna Priakhina, Nina Syromiatnikov, Mikhail Korneeva, Olga |
author_facet |
Anokhina, Ekaterina Tolkacheva, Anna Priakhina, Nina Syromiatnikov, Mikhail Korneeva, Olga |
author_sort |
Anokhina, Ekaterina |
title |
Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
title_short |
Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
title_full |
Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
title_fullStr |
Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
title_full_unstemmed |
Isolation and identification of Saprolegnia spp. from infected sturgeon caviar |
title_sort |
isolation and identification of saprolegnia spp. from infected sturgeon caviar |
publishDate |
2023 |
url |
https://zenodo.org/record/7679902 https://doi.org/10.5281/zenodo.7679902 |
genre |
Sibirica |
genre_facet |
Sibirica |
op_source |
Acta Biologica Sibirica 9 13-21 |
op_relation |
doi:10.5281/zenodo.7679901 https://zenodo.org/record/7679902 https://doi.org/10.5281/zenodo.7679902 oai:zenodo.org:7679902 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.767990210.5281/zenodo.7679901 |
_version_ |
1766196743322468352 |