First molecular identification, biological diversity, and infection features of myxozoan parasites in Whiting Merlangius merlangus along the Turkish coast of the Black Sea

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dc.contributor.authorGurkanli, Cem Tolga
dc.contributor.authorOkkay, Sevilay
dc.contributor.authorCiftci, Yilmaz
dc.contributor.authorOzer, Ahmet
dc.date.accessioned2026-04-25T14:20:09Z
dc.date.available2026-04-25T14:20:09Z
dc.date.issued2025
dc.departmentSinop Üniversitesi
dc.description.abstractObjective Myxosporean parasites are worldwide-distributed cnidarians that infect the organs and tissues of marine and freshwater organisms, primarily fish. Based on morphological peculiarities, two myxosporean species, Myxidium gadi and Ceratomyxa merlangi, from the gallbladder content of Whiting Merlangius merlangus inhabiting four sampling localities (Kocaeli, Sinop, Ordu, and Trabzon) along the Black Sea coast of T & uuml;rkiye have been identified.Methods Concordant with the morphological data, the first phylogenetic analyses on the nucleotide sequences of 18S ribosomal DNA confirmed our Myxidium specimens to be M. gadi. This study also provided the first molecular data on C. merlangi, which appeared to be the closest species to C. cretensis and C. arcuata on the phylogenetic trees. The infection prevalence (%) and density values of each parasite species were calculated according to season and sampling localities of Whiting.Results Ceratomyxa merlangi had a higher overall prevalence value (39.6%) than M. gadi (25.7%). The density values of both parasite species ranged between 2+ and 3+ in all fish samples. When the infection indices in sampling localities were compared for both parasite species, C. merlangi and M. gadi had the highest infection prevalence values in Sinop samples (66.3%); the highest density of infection (3+) was recorded in Sinop samples for C. merlangi and in Ordu samples for M. gadi.Conclusions This study provides the first molecular data on M. gadi and C. merlangi, revealing their phylogenetic positions. In addition, seasonal and regional infection data for these species in the southern Black Sea region are reported for the first time, and it has been determined that both species can occur together. This study reveals the prevalence and distribution of two fish parasites in the southern Black Sea. The results of the study help to understand when and where these parasites infect fish, contributing to fish health monitoring and marine ecosystem protection.
dc.description.sponsorshipScientific Research Projects Coordination Unit of Ordu University in Ordu, Turkiye [D-2106]
dc.description.sponsorshipThis study was financially supported by the Scientific Research Projects Coordination Unit of Ordu University in Ordu, Turkiye, with Project Number D-2106.
dc.identifier.doi10.1093/jahafs/vsaf010
dc.identifier.endpage183
dc.identifier.issn0899-7659
dc.identifier.issn1548-8667
dc.identifier.issue4
dc.identifier.orcid0000-0003-4440-3525
dc.identifier.pmid41042941
dc.identifier.scopus2-s2.0-105025713340
dc.identifier.scopusqualityQ2
dc.identifier.startpage170
dc.identifier.urihttps://doi.org/10.1093/jahafs/vsaf010
dc.identifier.urihttps://hdl.handle.net/11486/8406
dc.identifier.volume37
dc.identifier.wosWOS:001586215400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherOxford Univ Press
dc.relation.ispartofJournal of Aquatic Animal Health
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260420
dc.subjectBlack Sea
dc.subjectCeratomyxa
dc.subjectclimate change
dc.subjectMerlangius merlangus
dc.subjectMyxidium
dc.subjectmyxozoa
dc.titleFirst molecular identification, biological diversity, and infection features of myxozoan parasites in Whiting Merlangius merlangus along the Turkish coast of the Black Sea
dc.typeArticle

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