The molecular diagnosis of Marteilia refringens and differentiation between Marteilia strains infecting oysters and mussels based on the rDNA IGS sequence

López-Flores, Inmaculada; Herrán, Roberto de la; Garrido-Ramos, Manuel A.; Navas, J.I.; Ruíz-Rejón, Carmelo; Ruíz-Rejón, Manuel

doi:10.1017/s0031182004005827

Cited by 57 publications

(67 citation statements)

References 13 publications

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“…Considering this result in a polyphasic approach, they supported the recognition of two species of Marteilia in Europe, M. refringens and M. maurini. However, since these results were published, an increasing number of reports, noticeably in the Iberian Peninsula, show that no strict correlation of Marteilia types to mussels or oysters can be established (Lopez-Flores et al 2004) and that M. maurini (M type) can be found in oysters and M. refringens (O type) in mussels in contrast to what was shown earlier . Practical implications of these findings are discussed later in this paper.…”

Section: The Palimpsest Of Paramyxean Taxonomymentioning

confidence: 69%

Marteiliosis in molluscs: A review

Berthe

Roux

Adlard

et al. 2004

Aquat. Living Resour.

100

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-Among mollusc pathogens, paramyxeans are an important group of protistan parasites belonging to the genera Marteilia and Marteilioides. Marteilia refringens and M. sydneyi are of particular concern given their potential impact on mollusc aquaculture world-wide. Aber disease and QX disease are currently listed by the OIE, the World Organisation for Animal Health. After more than thirty years of existence in the scientific literature, these organisms still pose questions and research challenges to investigators. This paper reviews current knowledge of the group and key references. The review was focused on taxonomy, epidemiology, pathology and potential control methods for these organisms in order to enhance understanding of paramyxean infection issues in mollusc aquaculture.Key words: Taxonomy / Epidemiology / Pathology / Diagnosis / Paramyxean parasites Résumé -Marteiliose des mollusques : une synthèse. Au nombre des agents pathogènes des mollusques, les paramyxéens, notamment les agents appartenant aux genres Marteilia et Marteilioides, sont des protistes parasites des plus importants. Marteilia refringens et M. sydneyi constituent un souci majeur compte tenu de leur impact potentiel sur la conchyliculture dans le monde. La maladie des Abers et la maladie du Queensland (QX) sont actuellement répertoriées par l'Office International des Epizooties. Après plus de trente années d'existence dans la littérature scientifique, ces organismes posent encore questions et défis aux investigateurs. Cet article fait l'état des connaissances sur le sujet en s'attachant plus particulièrement à la taxonomie, l'épidémiologie, la pathologie et les méthodes potentielles de contrôle de ces organismes dans l'optique d'une meilleure compréhension de la problématique des paramyxéens en conchyliculture.

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Section: The Palimpsest Of Paramyxean Taxonomymentioning

confidence: 69%

Marteiliosis in molluscs: A review

Berthe

Roux

Adlard

et al. 2004

Aquat. Living Resour.

100

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“…Nevertheless, the validity of these criteria to differentiate the mussel parasite from M. refringens was considered dubious (Villalba et al 1993a, Longshaw et al 2001. Molecular analyses also raised doubts about whether the mussel parasite was a different species from M. refringens (López-Flores et al 2004). The occurrence of M. refringens in the ovary of the planktonic copepod Paracartia grani led to the hypothesis that the copepod is an intermediate host of the parasite (Audemard et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Cockle Cerastoderma edule fishery collapse in the Ría de Arousa (Galicia, NW Spain) associated with the protistan parasite Marteilia cochillia

Villalba¹,

Iglesias²,

Ramilo³

et al. 2014

Dis. Aquat. Org.

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“…R. Soc. B 371: 20150215 distinct genetic lineages [33]. Polymorphic sites in the ITS-1 region of the ribosomal RNA gene complex distinguish an 'O' genotype more often detected in oysters from an 'M' genotype more often detected in mussels [34].…”

Section: The Paradox Of the List Of Notifiable Diseasesmentioning

confidence: 99%

Managing marine mollusc diseases in the context of regional and international commerce: policy issues and emerging concerns

Carnegie

Arzul

Bushek

2016

Phil. Trans. R. Soc. B

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Marine mollusc production contributes to food and economic security worldwide and provides valuable ecological services, yet diseases threaten these industries and wild populations. Although the infrastructure for mollusc aquaculture health management is well characterized, its foundations are not without flaws. Use of notifiable pathogen lists can leave blind spots with regard to detection of unlisted and emerging pathogens. Increased reliance on molecular tools has come without similar attention to diagnostic validation, raising questions about assay performance, and has been accompanied by a reduced emphasis on microscopic diagnostic expertise that could weaken pathogen detection capabilities. Persistent questions concerning pathogen biology and ecology promote regulatory paralysis that impedes trade and which could weaken biosecurity by driving commerce to surreptitious channels. Solutions that might be pursued to improve shellfish aquaculture health management include the establishment of more broad-based surveillance programmes, wider training and use of general methods like histopathology to ensure alertness to emerging diseases, an increased focus on assay assessment and validation as fundamental to assay development, investment in basic research, and application of risk analyses to improve regulation. A continual sharpening of diagnostic tools and approaches and deepening of scientific knowledge is necessary to manage diseases and promote sustainable molluscan shellfish industries.

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The molecular diagnosis of Marteilia refringens and differentiation between Marteilia strains infecting oysters and mussels based on the rDNA IGS sequence

Cited by 57 publications

References 13 publications

Marteiliosis in molluscs: A review

Marteiliosis in molluscs: A review

Cockle Cerastoderma edule fishery collapse in the Ría de Arousa (Galicia, NW Spain) associated with the protistan parasite Marteilia cochillia

Managing marine mollusc diseases in the context of regional and international commerce: policy issues and emerging concerns

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