Abstract
The morphological and molecular identification of Hysterothylacium larval morphotypes in the Black Sea remains unresolved and incomplete. The aim of current study was to provide a detailed morphological identification with rDNA whole ITS (ITS‒1, 5.8S subunit, ITS‒2) and mtDNA cox2 sequences data of Hysterothylacium larval morphotypes infecting four commonly edible marine fish species, including European anchovy, Engraulis encrasicolus (L.), horse mackerel, Trachurus trachurus (L.), whiting, Merlangius merlangus (L.), and red mullet, Mullus barbatus ponticus (E.) in the Black Sea (FAO fishing area 37.4.2). Hysterothylacium larval morphotypes were morphologically classified, followed by whole ITS and cox2 sequencing. Four Hysterothylacium larval morphotypes, III, IV, VIII, and IX, are described based on morphological and molecular data. The present study provides the first study reporting whole ITS and cox2 sequences for Hysterothylacium larval morphotypes III, IV, VIII and III, IV, VIII, IX, respectively, in the Black Sea. Here, we offer a foundation for future research on the distribution, morphologic and molecular identification of Hysterothylacium larval morphotypes infecting edible some marine fish in the Black Sea.
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Data availability
Data supporting the conclusions of this article are included within the article. Nucleotide sequences generated in this study were deposited in the GenBank database under the accession numbers MZ313180‒MZ313183 and MZ313477‒ MZ313488.
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This study was supported by the Scientific Research Council of Ondokuz Mayis University, Samsun, Türkiye [grant number PYO.VET.1904.20.022].
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G.Z.P. supervised and coordinated the present study. G.Z.P. came up with the study idea and drafted the initial proposal. G.Z.P. and M.Y.G. carried out the laboratory analyses. G.Z.P. and M.Y.G. have also read and approved the final manuscript. This work is also summarized from the master thesis of M.Y.G., Ondokuz Mayis University, Samsun, Türkiye, in 2021.
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Gelen, M.Y., Pekmezci, G.Z. Morphological and molecular characterization of Hysterothylacium larval morphotypes (Nematoda: Raphidascarididae) infecting edible marine fish in the Black Sea. Parasitol Res 122, 1863–1872 (2023). https://doi.org/10.1007/s00436-023-07887-3
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DOI: https://doi.org/10.1007/s00436-023-07887-3