Ortholinea nupchi n. sp. (Myxosporea: Ortholineidae) from the urinary bladder of the cultured olive flounder Paralichthys olivaceus, South Korea

Shin, Sook; Jin, Chang Nam; Sohn, Hanchang; Kim, Jeongeun; Lee, Jehee

doi:10.1016/j.parint.2023.102734

Cited by 2 publications

(3 citation statements)

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“…Ortholinea (Shulman, 1962), the target myxozoan genus in this study, is composed of coelozoic 26 binominal parasite species that infect mainly the urinary bladder of mostly marine and rarely freshwater fishes (Lom and Dyková, 2006;Shin et al, 2023). Despite its limited biological diversity when compared with some other myxosporean genera such as Myxobolus, Myxidium, etc., reported species from fishes of this genus reveal a worldwide distribution (Lom and Dyková, 1992;Rangel et al, 2014Rangel et al, , 2015Rangel et al, , 2017Gürkanlı et al, 2018;Shin et al, 2023). Concordant with this data, 4 Ortholinea species (O. divergens, O. gobiusi, O. orientalis, O. mullusi) have been reported from the Black Sea coasts of Türkiye thus far (Özer et al, 2015a, 2015bGürkanlı et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Ortholinea is probably a genus known to have ancestors reviving marine habitats and it has recently been transferred from Ortholineidae to Myxobilatidae due to phylogenetic proximity (Karlsbakk et al ., 2017 ). This genus is represented by 26 species worldwide including 4 species that have been reported from marine fishes in the Black Sea coasts of Türkiye (Lom and Dyková, 1992 ; Karlsbakk, 2001 , Rangel et al ., 2014 , 2015 , 2017 ; Özer et al ., 2015 a , 2015 b ; Gürkanlı et al ., 2018 ; Shin et al ., 2023 ). Most of the Ortholinea species have been generally reported in the urinary bladder, but rarely in the kidney, gallbladder, and gill tissues of their host fishes (Rangel et al ., 2014 , 2015 , 2017 ; Gürkanlı et al ., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

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New molecular evidence on the members of the genus Ortholinea (Cnidaria, Myxozoa) and the description of Ortholinea hamsiensis n. sp. infecting the urinary bladder of European anchovy Engraulis engrasicolus in the Black Sea

Okkay,

Gürkanlı,

Çiftçi

et al. 2024

Parasitology

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Members of the genus Ortholinea are among the worldwide distributed myxozoan parasites that mainly infect marine fish. In this study, a new myxosporean species, Ortholinea hamsiensis n. sp., was isolated from the urinary bladder of European anchovy Engraulis engrasicolus collected from the Sinop coasts of the Black Sea. The prevalence and density values of infection were 1.4% and 1–5 individuals in the field of view (1 + ), respectively. Mature myxospores are subspherical with slight tapering down to the less pronounced tip in the frontal view and subspherical in the sutural view. Myxospores measured 9.1 ± 0.25 (8.8–9.9) μm in length, 9.2 ± 0.11 (8.9–9.4) μm in thickness, and 8.4 ± 0.33 (8.2-9.1) μm in width. Two polar capsules equal in size measured 3.1 ± 0.11 (3.0–3.3) μm in length and 2.7 ± 0.11 (2.6–2.9) μm in width. The polar tubule had 3–4 coils. Along with morphological peculiarities, the results of the 18S rDNA also revealed it to be a new species for science compared to the other species of the genus. In this study, another myxosporean species O. gobiusi was also detected in round goby Neogobius melanostomus with a prevalence of infection value of 4.8% and a density of 1–5 individuals in the field of view (1 + ). The present study also provided the first data of 18S rDNA of O. gobiusi from N. melanostomus and type species of the genus O. divergens from Gobius niger and the phylogenetic relationships of these species with other Ortholinea species have been revealed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New molecular evidence on the members of the genus Ortholinea (Cnidaria, Myxozoa) and the description of Ortholinea hamsiensis n. sp. infecting the urinary bladder of European anchovy Engraulis engrasicolus in the Black Sea

Okkay,

Gürkanlı,

Çiftçi

et al. 2024

Parasitology

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“…Another 6 Ortholinea SSU rDNA sequences are available, but are unpublished records (DQ333433, KP637274, MH197371, MK937851, MZ474836, KU301052). A single large subunit ribosomal RNA gene (LSU rDNA) sequence is also available for Ortholinea nupchi Shin et al, 2023 . Genetic interspecific variation between Ortholinea SSU rDNA sequences ranges between 1.65% and 29.1%.…”

Section: Introductionmentioning

confidence: 99%

Synopsis of the species of Ortholinea Shulman, 1962 (Cnidaria: Myxosporea: Ortholineidae)

Rangel,

Rocha,

Santos

2024

Syst Parasitol

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A synopsis of Ortholinea Shulman, 1962 (Cnidaria: Myxosporea: Ortholineidae) is presented and identifies 26 nominal species presently allocated within this genus. Species morphological and morphometric features, tissue tropism, type-host, and type-locality are provided from original descriptions. Data from subsequent redescriptions and reports is also given. Accession numbers to sequences deposited in GenBank are indicated when available, and the myxospores were redrawn based on original descriptions. The information gathered shows that Ortholinea infect a wide taxonomic variety of freshwater and marine fish. Nonetheless, the broad host specificity reported for several species is not fully supported by morphological descriptions and requires molecular corroboration. The members of this genus are coelozoic and mainly parasitize the urinary system, with few species occurring in the gallbladder. Ortholinea visakhapatnamensis is the only exception, being histozoic in the visceral peritoneum. Molecular data of the small subunit ribosomal RNA gene (SSU rDNA) is available for about one third of Ortholinea species, with genetic interspecific variation ranging between 1.65% and 29.1%. Phylogenetic analyses reveal Ortholinea to be polyphyletic, with available SSU rDNA sequences clustering within the subclades of the highly heterogenous freshwater urinary clade of the oligochaete-infecting lineage. The life cycles of two Ortholinea species have been clarified based on molecular inferences and identify triactinomyxon actinospores as counterparts, and marine oligochaetes of the family Naididae as permissive hosts to this genus.

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Ortholinea nupchi n. sp. (Myxosporea: Ortholineidae) from the urinary bladder of the cultured olive flounder Paralichthys olivaceus, South Korea

Cited by 2 publications

References 38 publications

New molecular evidence on the members of the genus Ortholinea (Cnidaria, Myxozoa) and the description of Ortholinea hamsiensis n. sp. infecting the urinary bladder of European anchovy Engraulis engrasicolus in the Black Sea

New molecular evidence on the members of the genus Ortholinea (Cnidaria, Myxozoa) and the description of Ortholinea hamsiensis n. sp. infecting the urinary bladder of European anchovy Engraulis engrasicolus in the Black Sea

Synopsis of the species of Ortholinea Shulman, 1962 (Cnidaria: Myxosporea: Ortholineidae)

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