How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey

Scallop (Argopecten purpuratus) cultivation is an important economic activity in the central-northern region of Chile, and diseases are a permanent concern for farmers and fishing authorities. A one year-long survey was undertaken to find out what parasites and putative pathogens are present in cult...

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Autor principal:	Lohrmann,Karin B
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2009
Materias:	Rickettsial like organisms granulomas Trichodina sp kidney concretions
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100004
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spelling	oai:scielo:S0718-195720090001000042009-08-03How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological surveyLohrmann,Karin B Rickettsial like organisms granulomas Trichodina sp kidney concretions Scallop (Argopecten purpuratus) cultivation is an important economic activity in the central-northern region of Chile, and diseases are a permanent concern for farmers and fishing authorities. A one year-long survey was undertaken to find out what parasites and putative pathogens are present in cultivated scallops from three locations: Caldera, Guanaqueros and Tongoy. Ninety adult scallops were sampled from each location, on each season of the year. The soft parts were fixed in Davidson´s fluid, and processed routinely for histology. The prevalence of infection for each parasite and pathologic condition were assessed. Larvae were sampled from three hatcheries and fixed for transmission electron microscopy. The same was done with digestive gland and gill tissues from the first 10 adults of each group sampled for histology. The same parasites and pathologic conditions were found in scallops from the three locations studied: inclusions of rickettsial-like organisms (RLOs) in epithelial digestive gland tubule cells of adults, and in the velar rim of one larva, haemocyte infiltration in gills and digestive gland, two types of granulomas of unknown aetiology in visceral and mantle connective tissues, mineral concretions in kidney, and the protozoan Trichodina sp., a ciliate ectoparasite, on the gills. However, the prevalences of all conditions varied greatly between the three sites and/or seasons. Based on the absence of significant mortalities among cultured scallops at the three sites during the reported survey year, it is concluded that the surveyed scallops were healthy, and that the pathological conditions reported here are generally benign.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.44 n.1 20092009-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100004en10.4067/S0718-19572009000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Rickettsial like organisms granulomas Trichodina sp kidney concretions
spellingShingle	Rickettsial like organisms granulomas Trichodina sp kidney concretions Lohrmann,Karin B How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
description	Scallop (Argopecten purpuratus) cultivation is an important economic activity in the central-northern region of Chile, and diseases are a permanent concern for farmers and fishing authorities. A one year-long survey was undertaken to find out what parasites and putative pathogens are present in cultivated scallops from three locations: Caldera, Guanaqueros and Tongoy. Ninety adult scallops were sampled from each location, on each season of the year. The soft parts were fixed in Davidson´s fluid, and processed routinely for histology. The prevalence of infection for each parasite and pathologic condition were assessed. Larvae were sampled from three hatcheries and fixed for transmission electron microscopy. The same was done with digestive gland and gill tissues from the first 10 adults of each group sampled for histology. The same parasites and pathologic conditions were found in scallops from the three locations studied: inclusions of rickettsial-like organisms (RLOs) in epithelial digestive gland tubule cells of adults, and in the velar rim of one larva, haemocyte infiltration in gills and digestive gland, two types of granulomas of unknown aetiology in visceral and mantle connective tissues, mineral concretions in kidney, and the protozoan Trichodina sp., a ciliate ectoparasite, on the gills. However, the prevalences of all conditions varied greatly between the three sites and/or seasons. Based on the absence of significant mortalities among cultured scallops at the three sites during the reported survey year, it is concluded that the surveyed scallops were healthy, and that the pathological conditions reported here are generally benign.
author	Lohrmann,Karin B
author_facet	Lohrmann,Karin B
author_sort	Lohrmann,Karin B
title	How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
title_short	How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
title_full	How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
title_fullStr	How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
title_full_unstemmed	How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey
title_sort	how healthy are cultivated scallops (argopecten purpuratus) from chile?: a histopathological survey
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100004
work_keys_str_mv	AT lohrmannkarinb howhealthyarecultivatedscallopsargopectenpurpuratusfromchileahistopathologicalsurvey
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How healthy are cultivated scallops (Argopecten purpuratus) from Chile?: A histopathological survey

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