Health assessment of fan mussels in the southern part of the Sea of Marmara

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dc.authorid0000-0003-2733-3254
dc.authorid0000-0003-2830-6979
dc.contributor.authorKaradurmus, Ugur
dc.contributor.authorGurkan, Selin Erturk
dc.contributor.authorGurkan, Mert
dc.contributor.authorKunili, IBrahim Ender
dc.contributor.authorTurgay, Emre
dc.contributor.authorSari, Mustafa
dc.date.accessioned2026-02-03T12:00:26Z
dc.date.available2026-02-03T12:00:26Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe fan mussel (Pinna nobilis Linnaeus, 1758), a critically endangered species in the Mediterranean Sea, has experienced mass mortality events (MME) due to various pathogens, particularly the protozoan parasite Haplosporidium pinnae. Despite these challenges, the Sea of Marmara (SoM) still has significant populations of fan mussels, with no infection-related MME reported so far. This study aimed to assess the general health status of fan mussels in the SoM and understand the factors that contribute to their survival. The samples were collected on September 25, 2023, around the Kap & imath;da & gbreve; Peninsula in the southern part of the SoM, a critical area for fan mussel populations, where a total of 20 live specimens were included in advanced laboratory analysis from four stations. Findings revealed that Haplosporidium and Mycobacterium species were present in P. nobilis across all stations, with higher oxidative stress indicators in the digestive gland tissues. Results also observed different life stages of Haplosporidium in the mantle and digestive gland. Molecular analyses revealed the presence of haplosporidian parasites, Perkinsus sp., andMycobacteri-um sp. in some samples. Phylogenetic analysis showed that Haplosporidium isolates form a distinct clade separate from H. pinnae, suggesting they belong to a different species. The detected Haplosporidium species in the SoM displayed genetic differences from H. pinnae found in the Mediterranean Sea, potentially indicating a less virulent variant. This study raised the question of whether interactions between the detected Haplosporidium parasite and other pathogens or region-specific ecological characteristics were effective in the absence of a mass mortality in fan mussels in the SoM.
dc.description.sponsorshipScientific Research Projects Coordination Unit of Bandimath;rma Onyedi Eyluel University [BAP-20-1003-006, BAP-23-1003-004]
dc.description.sponsorshipThis work was supported by the Scientific Research Projects Coordination Unit of Band & imath;rma Onyedi Eylul University [Project numbers: BAP-20-1003-006 and BAP-23-1003-004] . We would like to thank Ozleyi & scedil; Ya & gbreve;mur B & Idot;NAY for her devoted assistance in laborato-ry studies. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. All authors read and approved the final man-uscript. The data that support the findings of this study are available from the corresponding author upon reason-able request.
dc.identifier.doi10.12681/mms.38406
dc.identifier.issn1108-393X
dc.identifier.issue3
dc.identifier.scopus2-s2.0-105016008080
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.12681/mms.38406
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34609
dc.identifier.volume26
dc.identifier.wosWOS:001589472100003
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherNatl Centre Marine Research
dc.relation.ispartofMediterranean Marine Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectPinna nobilis
dc.subjectcritically endangered
dc.subjectmass mortality event
dc.subjectHaplosporida
dc.subjectMediterraneanSea
dc.titleHealth assessment of fan mussels in the southern part of the Sea of Marmara
dc.typeArticle

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