Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery

Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery

10 pages, 8 figures, 1 table.-- Printed version published Aug 2008.

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Main Authors: Galimany, Eve, Sunila, Inke, Hégaret, Hélène, Ramón, Montserrat, Wikfors, Gary H.
Format: artículo biblioteca
Language:English
Published: Elsevier 2008-02-23
Subjects:Alexandrium fundyense, Harmful algal blooms, Hemocyte, Histopathology, Immunology, Mytilus edulis,
Online Access:http://hdl.handle.net/10261/16519
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spelling dig-icm-es-10261-165192020-11-19T07:18:01Z Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery Galimany, Eve Sunila, Inke Hégaret, Hélène Ramón, Montserrat Wikfors, Gary H. Alexandrium fundyense Harmful algal blooms Hemocyte Histopathology Immunology Mytilus edulis 10 pages, 8 figures, 1 table.-- Printed version published Aug 2008. Mussels (Mytilus edulis) were exposed to cultures of the toxic dinoflagellate Alexandrium fundyense or the non-toxic alga Rhodomonas sp. to evaluate the effects of the harmful alga on the mussels and to study recovery after discontinuation of the A. fundyense exposure. Mussels were exposed for 9 days to the different algae and then all were fed Rhodomonas sp. for 6 more days. Samples of hemolymph for hemocyte analyses and tissues for histology were collected before the exposure and periodically during exposure and recovery periods. Mussels filtered and ingested both microalgal cultures, producing fecal pellets containing degraded, partially degraded, and intact cells of both algae. Mussels exposed to A. fundyense had an inflammatory response consisting of degranulation and diapedesis of hemocytes into the alimentary canal and, as the exposure continued, hemocyte migration into the connective tissue between the gonadal follicles. Evidence of lipid peroxidation, similar to the detoxification pathway described for various xenobiotics, was found; insoluble lipofuchsin granules formed (ceroidosis), and hemocytes carried the granules to the alimentary canal, thus eliminating putative dinoflagellate toxins in feces. As the number of circulating hemocytes in A. fundyense-exposed mussels became depleted, mussels were immunocompromised, and pathological changes followed, i.e., increased prevalences of ceroidosis and trematodes after 9 days of exposure. Moreover, the total number of pathological changes increased from the beginning of the exposure until the last day (day 9). After 6 days of the exposure, mussels in one of the three tanks exposed to A. fundyense mass spawned; these mussels showed more severe effects of the toxic algae than non-spawning mussels exposed to A. fundyense. No significant differences were found between the two treatments during the recovery period, indicating rapid homeostatic processes in tissues and circulating hemocytes. This study has been supported by a grant from the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) to the first author and partially financed by the RTA04- 023 INIA research project. Peer reviewed 2009-09-01T11:38:26Z 2009-09-01T11:38:26Z 2008-02-23 artículo http://purl.org/coar/resource_type/c_6501 Harmful Algae 7(5): 702-711 (2008) 1568-9883 http://hdl.handle.net/10261/16519 10.1016/j.hal.2008.02.006 en https://doi.org/10.1016/j.hal.2008.02.006 none 22195 bytes application/pdf Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Alexandrium fundyense
Harmful algal blooms
Hemocyte
Histopathology
Immunology
Mytilus edulis
Alexandrium fundyense
Harmful algal blooms
Hemocyte
Histopathology
Immunology
Mytilus edulis
spellingShingle Alexandrium fundyense
Harmful algal blooms
Hemocyte
Histopathology
Immunology
Mytilus edulis
Alexandrium fundyense
Harmful algal blooms
Hemocyte
Histopathology
Immunology
Mytilus edulis
Galimany, Eve
Sunila, Inke
Hégaret, Hélène
Ramón, Montserrat
Wikfors, Gary H.
Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
description 10 pages, 8 figures, 1 table.-- Printed version published Aug 2008.
format artículo
topic_facet Alexandrium fundyense
Harmful algal blooms
Hemocyte
Histopathology
Immunology
Mytilus edulis
author Galimany, Eve
Sunila, Inke
Hégaret, Hélène
Ramón, Montserrat
Wikfors, Gary H.
author_facet Galimany, Eve
Sunila, Inke
Hégaret, Hélène
Ramón, Montserrat
Wikfors, Gary H.
author_sort Galimany, Eve
title Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
title_short Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
title_full Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
title_fullStr Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
title_full_unstemmed Experimental exposure of the blue mussel (Mytilus edulis, L.) to the toxic dinoflagellate Alexandrium fundyense: Histopathology, immune responses, and recovery
title_sort experimental exposure of the blue mussel (mytilus edulis, l.) to the toxic dinoflagellate alexandrium fundyense: histopathology, immune responses, and recovery
publisher Elsevier
publishDate 2008-02-23
url http://hdl.handle.net/10261/16519
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AT ramonmontserrat experimentalexposureofthebluemusselmytilusedulisltothetoxicdinoflagellatealexandriumfundyensehistopathologyimmuneresponsesandrecovery
AT wikforsgaryh experimentalexposureofthebluemusselmytilusedulisltothetoxicdinoflagellatealexandriumfundyensehistopathologyimmuneresponsesandrecovery
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