Histological Examination of Perna canaliculus Mussels During a Summer Mortality Event in New Zealand

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aut.relation.endpage10
aut.relation.journalAquaculture Research
aut.relation.startpage1
aut.relation.volume2024
dc.contributor.authorMuznebin, Farhana
dc.contributor.authorVan Nguyen, Thao
dc.contributor.authorWebb, Stephen C
dc.contributor.authorAlfaro, Andrea C
dc.contributor.editorAbdelrahman, Hisham
dc.date.accessioned2024-04-29T23:51:42Z
dc.date.available2024-04-29T23:51:42Z
dc.date.issued2024-04-12
dc.description.abstractThe New Zealand Greenshell™ mussel (Perna canaliculus) is endemic to New Zealand and contributes to the success of the country’s aquaculture industry. However, summer mortality and potential disease outbreak events are having an increasing effect on the growth of this industry. The cause of these mortalities remains unknown, and histopathological studies of the pathogen and parasites in mussels are still incomplete. In the present study, a histological approach was used to identify pathogens and parasites, as well as immunological tissue responses in unhealthy- and healthy-looking P. canaliculus during a summer mortality event in 2018. A highly significant association between health conditions and the presence of Perkinsus olseni in mussels was observed. A higher prevalence of P. olseni, Apicomplexan-X (APX), and bacterial (rods and cocci) infections were noted in the unhealthy-looking mussels than in the healthy-looking mussels. In an assessment of stains, hematoxylin and eosin (H&E) staining appeared to be the best method for general pathological and anatomical characterization, while Giemsa provided the clearest visual definition of bacteria. In this aspect, it was comparable to Ziehl–Neelsen (ZN) in apparent sensitivity. Although Gram and ZN staining revealed bacterial cells marginally better than with H&E, their differential staining could not be assessed as no Gram-positive or acid-fast bacteria were seen, and no mussel-positive controls were available for comparison. This study also provides an illustrated guide to some significant mussel health indicators.
dc.identifier.citationAquaculture Research, ISSN: 1355-557X (Print); 1365-2109 (Online), Hindawi Limited, 2024, 1-10. doi: 10.1155/2024/6679103
dc.identifier.doi10.1155/2024/6679103
dc.identifier.issn1355-557X
dc.identifier.issn1365-2109
dc.identifier.urihttp://hdl.handle.net/10292/17475
dc.languageen
dc.publisherHindawi Limited
dc.relation.urihttps://www.hindawi.com/journals/are/2024/6679103/
dc.rights© 2024 Farhana Muznebin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.accessrightsOpenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject30 Agricultural, Veterinary and Food Sciences
dc.subject3005 Fisheries Sciences
dc.subjectBiodefense
dc.subjectPrevention
dc.subjectInfectious Diseases
dc.subjectEmerging Infectious Diseases
dc.subjectVaccine Related
dc.subjectInfection
dc.subject3 Good Health and Well Being
dc.subject0704 Fisheries Sciences
dc.subjectFisheries
dc.subject3005 Fisheries sciences
dc.titleHistological Examination of Perna canaliculus Mussels During a Summer Mortality Event in New Zealand
dc.typeJournal Article
pubs.elements-id546402
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