Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot
Abstract. 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...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.611.1112 2023-05-15T18:15:52+02:00 Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot Scophthalmus Maximus María J. Redondo Oswaldo Palenzuela Pilar Alvarez-pellitero The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.611.1112 http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.611.1112 http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf Key words Myxozoa Myxosporea Enteromyxum life cycle transmission turbot intestinal explants in vitro text ftciteseerx 2016-01-08T14:30:46Z Abstract. 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. Enteromyxum scophthalmi Palenzuela, Redondo et Alvarez-Pellitero, 2002 is a marine histozoic myxozoan Text Scophthalmus maximus Turbot Unknown Alvarez ENVELOPE(-64.483,-64.483,-65.633,-65.633) Redondo ENVELOPE(-64.075,-64.075,-65.204,-65.204) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words Myxozoa Myxosporea Enteromyxum life cycle transmission turbot intestinal explants in vitro |
spellingShingle |
Key words Myxozoa Myxosporea Enteromyxum life cycle transmission turbot intestinal explants in vitro Scophthalmus Maximus María J. Redondo Oswaldo Palenzuela Pilar Alvarez-pellitero Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
topic_facet |
Key words Myxozoa Myxosporea Enteromyxum life cycle transmission turbot intestinal explants in vitro |
description |
Abstract. 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. Enteromyxum scophthalmi Palenzuela, Redondo et Alvarez-Pellitero, 2002 is a marine histozoic myxozoan |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Scophthalmus Maximus María J. Redondo Oswaldo Palenzuela Pilar Alvarez-pellitero |
author_facet |
Scophthalmus Maximus María J. Redondo Oswaldo Palenzuela Pilar Alvarez-pellitero |
author_sort |
Scophthalmus Maximus |
title |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
title_short |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
title_full |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
title_fullStr |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
title_full_unstemmed |
Studies on transmission and life cycle of Enteromyxum scophthalmi (Myxozoa), an enteric parasite of turbot |
title_sort |
studies on transmission and life cycle of enteromyxum scophthalmi (myxozoa), an enteric parasite of turbot |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.611.1112 http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf |
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_source |
http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.611.1112 http://folia.paru.cas.cz/pdfs/fol/2004/02/09.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766189112882102272 |