Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors
Bivalve mollusks are an important resource due to their socioeconomic value and to the historical and genetic value of some species. Two nationally important oyster species-Portuguese oyster (Crassostrea angulata) and Japanese oyster (Crassostrea gigas) from distinctive areas in Portugal were studie...
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ftmdpi:oai:mdpi.com:/2077-1312/10/2/133/ 2023-08-20T04:06:04+02:00 Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors Daniel Pires Ana Grade Francisco Ruano Fernando Afonso agris 2022-01-20 application/pdf https://doi.org/10.3390/jmse10020133 EN eng Multidisciplinary Digital Publishing Institute Marine Biology https://dx.doi.org/10.3390/jmse10020133 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 10; Issue 2; Pages: 133 bivalve mollusks oysters histopathology parasites Text 2022 ftmdpi https://doi.org/10.3390/jmse10020133 2023-08-01T03:53:31Z Bivalve mollusks are an important resource due to their socioeconomic value and to the historical and genetic value of some species. Two nationally important oyster species-Portuguese oyster (Crassostrea angulata) and Japanese oyster (Crassostrea gigas) from distinctive areas in Portugal were studied to evaluate their sanitary status. Oysters were sampled from four different sites in Portugal. Oysters collected from Japanese oyster populations were cultivated in a strong ocean-influenced environment and Portuguese oyster populations were cultivated in wild-beds. The histopathological examination of both oyster species revealed the presence of parasites in gills, mantle epithelium, digestive gland tubules and connective tissue, with a moderate prevalence. In both populations was observed hemocytosis in the connective tissue, edema and metaplasia in the digestive gland and tissues necrosis. In wild populations from Sado and Mira estuaries the prevalence of mud blisters and gill lesions were higher than from populations produced on 0.50 m tables from mudflats. Biosecurity measures and diagnostic techniques are fundamental to control pathogenic agents, including the identification of pathogens at an early stage in their life cycles. This will prevent diseases and improve pathogen reduction on transport of animals from different countries and regions to new production areas to avoid the transmission of diseases. Text Crassostrea gigas MDPI Open Access Publishing Mira ENVELOPE(10.500,10.500,-70.417,-70.417) Journal of Marine Science and Engineering 10 2 133 |
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MDPI Open Access Publishing |
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English |
topic |
bivalve mollusks oysters histopathology parasites |
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bivalve mollusks oysters histopathology parasites Daniel Pires Ana Grade Francisco Ruano Fernando Afonso Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
topic_facet |
bivalve mollusks oysters histopathology parasites |
description |
Bivalve mollusks are an important resource due to their socioeconomic value and to the historical and genetic value of some species. Two nationally important oyster species-Portuguese oyster (Crassostrea angulata) and Japanese oyster (Crassostrea gigas) from distinctive areas in Portugal were studied to evaluate their sanitary status. Oysters were sampled from four different sites in Portugal. Oysters collected from Japanese oyster populations were cultivated in a strong ocean-influenced environment and Portuguese oyster populations were cultivated in wild-beds. The histopathological examination of both oyster species revealed the presence of parasites in gills, mantle epithelium, digestive gland tubules and connective tissue, with a moderate prevalence. In both populations was observed hemocytosis in the connective tissue, edema and metaplasia in the digestive gland and tissues necrosis. In wild populations from Sado and Mira estuaries the prevalence of mud blisters and gill lesions were higher than from populations produced on 0.50 m tables from mudflats. Biosecurity measures and diagnostic techniques are fundamental to control pathogenic agents, including the identification of pathogens at an early stage in their life cycles. This will prevent diseases and improve pathogen reduction on transport of animals from different countries and regions to new production areas to avoid the transmission of diseases. |
format |
Text |
author |
Daniel Pires Ana Grade Francisco Ruano Fernando Afonso |
author_facet |
Daniel Pires Ana Grade Francisco Ruano Fernando Afonso |
author_sort |
Daniel Pires |
title |
Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
title_short |
Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
title_full |
Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
title_fullStr |
Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
title_full_unstemmed |
Histopathologic Lesions in Bivalve Mollusks Found in Portugal: Etiology and Risk Factors |
title_sort |
histopathologic lesions in bivalve mollusks found in portugal: etiology and risk factors |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10020133 |
op_coverage |
agris |
long_lat |
ENVELOPE(10.500,10.500,-70.417,-70.417) |
geographic |
Mira |
geographic_facet |
Mira |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Journal of Marine Science and Engineering; Volume 10; Issue 2; Pages: 133 |
op_relation |
Marine Biology https://dx.doi.org/10.3390/jmse10020133 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse10020133 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
2 |
container_start_page |
133 |
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1774716981651439616 |