A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus)
Abstract One of the most promising aquaculture species is the Atlantic bluefin tuna (Thunnus thynnus) with high market value; disease control is crucial to prevent and reduce mortality and monetary losses. Microsporidia (Fungi) are a potential source of damage to bluefin tuna aquaculture. A new micr...
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| Format: | Article |
| Language: | English |
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BMC
2022-03-01
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| Series: | IMA Fungus |
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| Online Access: | https://doi.org/10.1186/s43008-022-00090-6 |
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| author | Alejandro López-Verdejo Francisco E. Montero Fernando de la Gándara Miguel A. Gallego Aurelio Ortega Juan Antonio Raga José F. Palacios-Abella |
| author_facet | Alejandro López-Verdejo Francisco E. Montero Fernando de la Gándara Miguel A. Gallego Aurelio Ortega Juan Antonio Raga José F. Palacios-Abella |
| author_sort | Alejandro López-Verdejo |
| collection | DOAJ |
| description | Abstract One of the most promising aquaculture species is the Atlantic bluefin tuna (Thunnus thynnus) with high market value; disease control is crucial to prevent and reduce mortality and monetary losses. Microsporidia (Fungi) are a potential source of damage to bluefin tuna aquaculture. A new microsporidian species is described from farmed bluefin tunas from the Spanish Mediterranean. This new pathogen is described in a juvenile associated with a highly severe pathology of the visceral cavity. Whitish xenomas from this microsporidian species were mostly located at the caecal mass and ranged from 0.2 to 7.5 mm. Light and transmission electron microscopy of the spores revealed mature spores with an average size of 2.2 × 3.9 μm in size and a polar filament with 13–14 coils arranged in one single layer. Phylogenetic analysis clustered this species with the Glugea spp. clade. The morphological characteristics and molecular comparison confirm that this is a novel microsporidian species, Glugea thunni. The direct life-cycle and the severe pathologies observed makes this parasite a hard risk for bluefin tuna cultures. |
| format | Article |
| id | doaj-art-94333c570e4a4085bfd52ab935eedbfa |
| institution | Kabale University |
| issn | 2210-6359 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | BMC |
| record_format | Article |
| series | IMA Fungus |
| spelling | doaj-art-94333c570e4a4085bfd52ab935eedbfa2025-02-02T00:47:33ZengBMCIMA Fungus2210-63592022-03-0113111410.1186/s43008-022-00090-6A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus)Alejandro López-Verdejo0Francisco E. Montero1Fernando de la Gándara2Miguel A. Gallego3Aurelio Ortega4Juan Antonio Raga5José F. Palacios-Abella6Marine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of ValenciaMarine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of ValenciaInstituto Español de Oceanografía, Centro Oceanográfico de MurciaInstituto Español de Oceanografía, Centro Oceanográfico de MurciaInstituto Español de Oceanografía, Centro Oceanográfico de MurciaMarine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of ValenciaMarine Zoology Unit, Cavanilles Institute of Biodiversity and Evolutionary Biology, Science Park, University of ValenciaAbstract One of the most promising aquaculture species is the Atlantic bluefin tuna (Thunnus thynnus) with high market value; disease control is crucial to prevent and reduce mortality and monetary losses. Microsporidia (Fungi) are a potential source of damage to bluefin tuna aquaculture. A new microsporidian species is described from farmed bluefin tunas from the Spanish Mediterranean. This new pathogen is described in a juvenile associated with a highly severe pathology of the visceral cavity. Whitish xenomas from this microsporidian species were mostly located at the caecal mass and ranged from 0.2 to 7.5 mm. Light and transmission electron microscopy of the spores revealed mature spores with an average size of 2.2 × 3.9 μm in size and a polar filament with 13–14 coils arranged in one single layer. Phylogenetic analysis clustered this species with the Glugea spp. clade. The morphological characteristics and molecular comparison confirm that this is a novel microsporidian species, Glugea thunni. The direct life-cycle and the severe pathologies observed makes this parasite a hard risk for bluefin tuna cultures.https://doi.org/10.1186/s43008-022-00090-6MicrosporidiaMarinosporidiaGlugeidaGlugea thunni new taxaAquacultureOsteichthyes |
| spellingShingle | Alejandro López-Verdejo Francisco E. Montero Fernando de la Gándara Miguel A. Gallego Aurelio Ortega Juan Antonio Raga José F. Palacios-Abella A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) IMA Fungus Microsporidia Marinosporidia Glugeida Glugea thunni new taxa Aquaculture Osteichthyes |
| title | A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) |
| title_full | A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) |
| title_fullStr | A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) |
| title_full_unstemmed | A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) |
| title_short | A severe microsporidian disease in cultured Atlantic Bluefin Tuna (Thunnus thynnus) |
| title_sort | severe microsporidian disease in cultured atlantic bluefin tuna thunnus thynnus |
| topic | Microsporidia Marinosporidia Glugeida Glugea thunni new taxa Aquaculture Osteichthyes |
| url | https://doi.org/10.1186/s43008-022-00090-6 |
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