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dc.contributor.author
Cremonte, Florencia  
dc.contributor.author
Figueras, A.  
dc.date.available
2017-11-24T17:28:07Z  
dc.date.issued
2004-12  
dc.identifier.citation
Cremonte, Florencia; Figueras, A.; Parasites as possible cause of mass mortalities of the presently critically endangered clam Mesodesma mactroides on the Southwest Atlantic coast; Eur Assoc Fish Pathologists; Bulletin Of The European Association Of Fish Pathologists; 24; 3; 12-2004; 166-171  
dc.identifier.issn
0108-0288  
dc.identifier.uri
http://hdl.handle.net/11336/29029  
dc.description.abstract
Specimens of Trichodina sp. were found on the gills of 58% of clams with moderate intensities without apparent cell damage. Coccidian were present in the nephridal tubules with both high prevalence (93%) and intensity of infection. Macrogamonts and meronts containing merozoites were the more frequently observed stages, obtruding the lumen of the nephridial tubules and associated with hypertrophying epithelial cells. Gregarines were observed inside the digestive epithelial cells and in the adjacent connective tissue in high intensities, with a prevalence of 64%. They were present alone or in groups of several individuals, in which case the epithelial cells were lysed. Turbellaria specimens were found inhabiting the lumen of the digestive tract, parasitising 30% of examined clams. Additionally, histological preparations from 36 dying clams from Monte Hermoso (40°32’S- 62°21’W, Buenos Aires province, Argentina, collected during mass mortality episode of November 1995) were re-examined. Despite the bad-condition of tissues, the same parasites found in Isla del Jabalí were observed, with the exception of gregarines: Trichodina sp. (100%), coccidians (100% from the five histological sections which included nephrida), turbellaria (14%). To support the hypothesis of a diseases-caused epidemic it is necessary to examine samples from other clam populations and to examine for virus infection.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Eur Assoc Fish Pathologists  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Histopatología  
dc.subject
Moluscos Bivalvos  
dc.subject.classification
Otras Ciencias Biológicas  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Parasites as possible cause of mass mortalities of the presently critically endangered clam Mesodesma mactroides on the Southwest Atlantic coast  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-11-03T20:03:09Z  
dc.journal.volume
24  
dc.journal.number
3  
dc.journal.pagination
166-171  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Cremonte, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina  
dc.description.fil
Fil: Figueras, A.. Instituto de Investigaciones Marinas; España  
dc.journal.title
Bulletin Of The European Association Of Fish Pathologists  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://eafp.org/download/2004-Volume24/Issue%203/24_166.pdf