Species which may act as vectors or reservoirs of diseases covered by the Animal Health Law: Listed pathogens of molluscs
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Author
EFSA Panel on Animal Health and Welfare (AHAW)
Nielsen, Søren Saxmose
Alvarez, Julio
Bicout, Dominique
Calistri, Paolo
Canali, Elisabetta
Drewe, Julian Ashley
Garin-Bastuji, Bruno
Gonzales Rojas, José Louis
Gortazar Smith, Christian
Herskin, Mette
Michel, Virginie
Miranda Chueca, Miguel Angel
Padalino, Barbara
Roberts, Helen
Spoolder, Hans
Ståhl, Karl
Viltrop, Arvo
Winckler, Christoph
Arzul, Isabelle
Dharmaveer, Shetty
Olesen, Niels Jørgen
Schiøtt, Morten
Sindre, Hilde
Stone, David
Vendramin, Niccoló
Antoniou, Sotiria-Eleni
Dhollander, Sofie
Karagianni, Anna Eleonora
Kero, Linnea Lindgren
Gnocchi, Marzia
Aznar, Inma
Barizzone, Fulvio
Munoz Guajardo, Irene Pilar
Roberts, Helen
Publication date
2023-08-01ISSN
1831-4732
Abstract
Vector or reservoir species of five mollusc diseases listed in the Animal Health Law were identified, based on evidence generated through an extensive literature review, to support a possible updating of Regulation (EU) 2018/1882. Mollusc species on or in which Mikrocytos mackini, Perkinsus marinus, Bonamia exitiosa, Bonamia ostreae and Marteilia refringens were detected, in the field or during experiments, were classified as reservoir species with different levels of certainty depending on the diagnostic tests used. Where experimental evidence indicated transmission of the pathogen from a studied species to another known susceptible species, this studied species was classified as a vector species. Although the quantification of the risk of spread of the pathogens by the vectors or reservoir species was not part of the terms of reference, such risks do exist for the vector species, since transmission from infected vector species to susceptible species was proven. Where evidence for transmission from infected molluscs was not found, these were defined as reservoir. Nonetheless, the risk of the spread of the pathogens from infected reservoir species cannot be excluded. Evidence identifying conditions that may prevent transmission by vectors or reservoir mollusc species during transport was collected from scientific literature. It was concluded that it is very likely to almost certain (90–100%) that M. mackini, P. marinus, B. exitiosa B. ostreae and M. refringens will remain infective at any possible transport condition. Therefore, vector or reservoir species that may have been exposed to these pathogens in an affected area in the wild or at aquaculture establishments or through contaminated water supply can possibly transmit these pathogens. For transmission of M. refringens, the presence of an intermediate host, a copepod, is necessary.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
636 - Animal husbandry and breeding in general. Livestock rearing. Breeding of domestic animals
Pages
34
Publisher
Wiley Open Access
Is part of
EFSA Journal
Citation
Nielsen, Søren Saxmose, Julio Alvarez, Dominique Joseph Bicout, Paolo Calistri, Elisabetta Canali, Julian Ashley Drewe and Bruno Garin‐Bastuji et al. 2023. " Species which may act as vectors or reservoirs of diseases covered by the Animal Health Law: Listed pathogens of molluscs". EFSA Journal 21 (8). doi:10.2903/j.efsa. 2023.8173.
Program
Benestar Animal
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2555]
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