Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus
In order to elucidate the transmission and dispersion routes used by the myxozoan parasite Enteromyxum scophthalmi Palenzuela, Redondo et Alvarez-Pellitero, 2002 within its host (Scophthalmus maximus L.), a detailed study of the course of natural and experimental infections was carried out. Purified...
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Language: | English |
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Academy of Sciences of the Czech Republic
2004
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Online Access: | http://hdl.handle.net/10261/253776 https://doi.org/10.14411/fp.2004.022 https://doi.org/10.13039/501100006280 https://doi.org/10.13039/501100000780 |
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ftcsic:oai:digital.csic.es:10261/253776 2024-02-11T10:08:26+01:00 Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus Redondo, Mª José Palenzuela, Oswaldo Álvarez-Pellitero, Mª del Pilar European Commission Ministerio de Ciencia y Tecnología (España) Stolt Sea Farm 2004-06-01 http://hdl.handle.net/10261/253776 https://doi.org/10.14411/fp.2004.022 https://doi.org/10.13039/501100006280 https://doi.org/10.13039/501100000780 en eng Academy of Sciences of the Czech Republic Publisher's version http://dx.doi.org/10.14411/fp.2004.022 Sí Folia Parasitologica 52(2-3): 188-198 (2004) 0015-5683 http://hdl.handle.net/10261/253776 doi:10.14411/fp.2004.022 1803-6465 http://dx.doi.org/10.13039/501100006280 http://dx.doi.org/10.13039/501100000780 open Myxozoa Myxosporea Enteromyxum Life cycle Transmission Turbot Intestinal explants In vitro artículo http://purl.org/coar/resource_type/c_6501 2004 ftcsic https://doi.org/10.14411/fp.2004.02210.13039/50110000628010.13039/501100000780 2024-01-16T11:15:18Z In order to elucidate the transmission and dispersion routes used by the myxozoan parasite Enteromyxum scophthalmi Palenzuela, Redondo et Alvarez-Pellitero, 2002 within its host (Scophthalmus maximus L.), a detailed study of the course of natural and experimental infections was carried out. Purified stages obtained from infected fish were also used in in vitro assays with explants of uninfected intestinal epithelium. The parasites can contact and penetrate loci in the intestinal epithelium very quickly. From there, they proliferate and spread to the rest of the digestive system, generally in an antero-posterior pattern. The dispersion routes include both the detachment of epithelium containing proliferative stages to the intestinal lumen and the breaching of the subepithelial connective system and local capillary networks. The former mechanism is also responsible for the release of viable proliferative stages to the water, where they can reach new fish hosts. The finding of parasite stages in blood smears, haematopoietic organs, muscular tissue, heart and, less frequently, skin and gills, suggests the existence of additional infection routes in transmission, especially in spontaneous infections, and indicates the role of vascular system in parasite dispersion within the fish. The very high virulence of this species in turbot and the rare development of mature spores in this fish may suggest it is an accidental host for this parasite. This may also question the existence of a two-host life cycle involving an actinosporean stage in this species. Further studies are needed to clarify this open point of the life cycle. Funding for this study was provided by the EU and the Spanish Ministerio de Ciencia y Tecnología through research grants FEDER 1FD97-0679-C02-01 and AGL2001-2241-C02-01. Additional support was obtained from Stolt Sea farm S.A. We are grateful to J. Monfort for histology processing, and to research support services at the Universities of Barcelona (UB) and Valencia (UPV) for assistance in TEM ... Article in Journal/Newspaper Scophthalmus maximus Turbot Digital.CSIC (Spanish National Research Council) Alvarez ENVELOPE(-64.483,-64.483,-65.633,-65.633) Redondo ENVELOPE(-64.075,-64.075,-65.204,-65.204) Folia Parasitologica 51 2-3 188 198 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Myxozoa Myxosporea Enteromyxum Life cycle Transmission Turbot Intestinal explants In vitro |
spellingShingle |
Myxozoa Myxosporea Enteromyxum Life cycle Transmission Turbot Intestinal explants In vitro Redondo, Mª José Palenzuela, Oswaldo Álvarez-Pellitero, Mª del Pilar Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
topic_facet |
Myxozoa Myxosporea Enteromyxum Life cycle Transmission Turbot Intestinal explants In vitro |
description |
In order to elucidate the transmission and dispersion routes used by the myxozoan parasite Enteromyxum scophthalmi Palenzuela, Redondo et Alvarez-Pellitero, 2002 within its host (Scophthalmus maximus L.), a detailed study of the course of natural and experimental infections was carried out. Purified stages obtained from infected fish were also used in in vitro assays with explants of uninfected intestinal epithelium. The parasites can contact and penetrate loci in the intestinal epithelium very quickly. From there, they proliferate and spread to the rest of the digestive system, generally in an antero-posterior pattern. The dispersion routes include both the detachment of epithelium containing proliferative stages to the intestinal lumen and the breaching of the subepithelial connective system and local capillary networks. The former mechanism is also responsible for the release of viable proliferative stages to the water, where they can reach new fish hosts. The finding of parasite stages in blood smears, haematopoietic organs, muscular tissue, heart and, less frequently, skin and gills, suggests the existence of additional infection routes in transmission, especially in spontaneous infections, and indicates the role of vascular system in parasite dispersion within the fish. The very high virulence of this species in turbot and the rare development of mature spores in this fish may suggest it is an accidental host for this parasite. This may also question the existence of a two-host life cycle involving an actinosporean stage in this species. Further studies are needed to clarify this open point of the life cycle. Funding for this study was provided by the EU and the Spanish Ministerio de Ciencia y Tecnología through research grants FEDER 1FD97-0679-C02-01 and AGL2001-2241-C02-01. Additional support was obtained from Stolt Sea farm S.A. We are grateful to J. Monfort for histology processing, and to research support services at the Universities of Barcelona (UB) and Valencia (UPV) for assistance in TEM ... |
author2 |
European Commission Ministerio de Ciencia y Tecnología (España) Stolt Sea Farm |
format |
Article in Journal/Newspaper |
author |
Redondo, Mª José Palenzuela, Oswaldo Álvarez-Pellitero, Mª del Pilar |
author_facet |
Redondo, Mª José Palenzuela, Oswaldo Álvarez-Pellitero, Mª del Pilar |
author_sort |
Redondo, Mª José |
title |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
title_short |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
title_full |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
title_fullStr |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
title_full_unstemmed |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus maximus |
title_sort |
studies on transmission and life cycle of enteromyxum scophthalmi (myxozoa), an enteric parasite of turbot scophthalmus maximus |
publisher |
Academy of Sciences of the Czech Republic |
publishDate |
2004 |
url |
http://hdl.handle.net/10261/253776 https://doi.org/10.14411/fp.2004.022 https://doi.org/10.13039/501100006280 https://doi.org/10.13039/501100000780 |
long_lat |
ENVELOPE(-64.483,-64.483,-65.633,-65.633) ENVELOPE(-64.075,-64.075,-65.204,-65.204) |
geographic |
Alvarez Redondo |
geographic_facet |
Alvarez Redondo |
genre |
Scophthalmus maximus Turbot |
genre_facet |
Scophthalmus maximus Turbot |
op_relation |
Publisher's version http://dx.doi.org/10.14411/fp.2004.022 Sí Folia Parasitologica 52(2-3): 188-198 (2004) 0015-5683 http://hdl.handle.net/10261/253776 doi:10.14411/fp.2004.022 1803-6465 http://dx.doi.org/10.13039/501100006280 http://dx.doi.org/10.13039/501100000780 |
op_rights |
open |
op_doi |
https://doi.org/10.14411/fp.2004.02210.13039/50110000628010.13039/501100000780 |
container_title |
Folia Parasitologica |
container_volume |
51 |
container_issue |
2-3 |
container_start_page |
188 |
op_container_end_page |
198 |
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1790607777948762112 |