Description of a metacercaria of a zoogonid trematode Steganoderma cf. eamiqtrema Blend and Racz, 2020 (Microphalloidea: Zoogonidae), with notes on the phylogenetic position of the genus Steganoderma Stafford, 1904, and resurrection of the subfamily Lecithostaphylinae Odhner, 1911

Соколов, С. Г.; Shchenkov, Sergei V.; Гордеев, И. И.; Ryazanova, T. V.

doi:10.1007/s00436-021-07151-6

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…The family Zoogonidae Odhner, 1902 is one of the taxonomically problematic groups of trematodes, which was periodically revised on the basis of the morphological and biological features of its representatives (Bray and Gibson, 1986;Bray, 1986, Bray, 2008, Blend et al, 2020Sokolov et al, 2021a, Kremnev et al, 2023. Bray (2008) recognised two subfamilies within the family Zoogonidae: Zoogoninae Odhner, 1902 andLepidophyllinae Stossich, 1903. Recently, the subfamilies Cephaloporinae Yamaguti, 1934 andLecithostaphyllinae Odhner, 1911 were resurrected within Zoogonidae (Blend et al, 2020;Sokolov et al, 2021a). According to Bray (2008), the subfamily Zoogoninae comprises nine genera of intestinal trematodes of marine, anadromous, and amphidromic fishes.…”

Section: Introductionmentioning

confidence: 99%

“…Bray (2008) recognised two subfamilies within the family Zoogonidae: Zoogoninae Odhner, 1902 and Lepidophyllinae Stossich, 1903. Recently, the subfamilies Cephaloporinae Yamaguti, 1934 and Lecithostaphyllinae Odhner, 1911 were resurrected within Zoogonidae (Blend et al , 2020; Sokolov et al , 2021a). According to Bray (2008), the subfamily Zoogoninae comprises nine genera of intestinal trematodes of marine, anadromous, and amphidromic fishes.…”

Section: Introductionmentioning

confidence: 99%

“…(Olson et al , 2003; Kremnev et al , 2023). Results of several phylogenetic studies based on molecular data show that Zoogonodae is non-monophyletic, but formed strongly supported monophyly with representatives of Faustulidae; the problem actively discussed and still unresolved (Hall et al , 1999; Sun et al , 2014; Sokolov et al , 2021a; 2021b).…”

Section: Introductionmentioning

confidence: 99%

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Morphological and molecular data on Pseudozoogonoides ugui Shimazu, 1974 (Digenea: Microphalloidea: Zoogonidae) ex Pseudaspius hakonensis (Günther, 1877) and taxonomic problems in Zoogoninae genera

Atopkin,

Ivashko,

Izrailskaia

et al. 2024

J. Helminthol.

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New morphological and molecular data were generated for trematodes recovered from the intestines of the fish Pseudaspius hakonensis from two locations in the south of the Russian Far East. Morphologically, these trematodes are identical to Pseudozoogonoides ugui (Microphalloidea: Zoogonidae) from Japan. According to results of phylogenetic analysis based on 28S rDNA sequence data, P. ugui was closely related to Zoogonoides viviparus, and P. subaequiporus appears as a sister taxon to these two species. Genetic distance values, calculated based on both 28S rDNA and ITS2 rDNA, between P. ugui and Z. viviparus represents an interspecific differentiation level. Our results have an ambiguous explanation, indicating that the implication of the presence of one or two compact vitellarial aggregations for the differentiation of Zoogonoides and Pseudozoogonoides should be reconsidered or that our results open up the question of the taxonomical status of trematodes previously denoted as Z. viviparus and P. subaequiporus.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological and molecular data on Pseudozoogonoides ugui Shimazu, 1974 (Digenea: Microphalloidea: Zoogonidae) ex Pseudaspius hakonensis (Günther, 1877) and taxonomic problems in Zoogoninae genera

Atopkin,

Ivashko,

Izrailskaia

et al. 2024

J. Helminthol.

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“…However, Bray [3,5] moved Anarhichotrema into the Zoogonidae based on the understanding that lissorchiids did not typically parasitise marine fish. According to the current zoogonid concept, Anarhichotrema is affiliated to the Lecithostaphylinae Odhner, 1911 sensu lato [6]. However, the lack of molecular genetic data for this genus significantly complicates evaluation of its phylogenetic position.…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Evidence for the Lissorchiid Concept of the Genus Anarhichotrema Shimazu, 1973 (Trematoda, Digenea)

2022

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Anarhichotrema Shimazu, 1973 is a monotypic digenean genus, with the type- and only species, Anarhichotrema ochotense Shimazu, 1973, known to infect North Pacific fishes. This genus was originally described as a member of the Lissorchiidae (Monorchioidea) and later moved to the Zoogonidae (Microphalloidea). Its exact phylogenetic position has remained unresolved due to the lack of molecular data. In this study, we isolated specimens of A. ochotense from the Bering wolffish, Anarhichas orientalis Pallas, 1814 caught in the Sea of Okhotsk, described them morphologically and performed a molecular phylogenetic analysis of their nuclear 18S and 28S rDNA regions. The specimens examined in our study generally corresponded to previous morphological descriptions of A. ochotense but were noticeably smaller, possibly due to the crowding effect. The phylogenetic analysis placed Anarhichotrema within the Lissorchiidae as a sister taxon to the group comprising freshwater lissorchiids. Thus, we restore Anarhichotrema to the Lissorchiidae, as originally assigned.

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New trematode species Lecithostaphylus halongi n. sp. (Zoogonidae, Microphalloidea) and Gymnotergestia strongyluri n. sp. (Fellodistomidae, Gymnophalloidea) from beloniform fishes in Vietnam

Atopkin

Besprozvannykh

et al. 2022

J. Helminthol.

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In this study we described two new trematode species, Lecithostaphylus halongi n. sp. (Zoogonidae, Lecithostaphylinae) and Gymnotergestia strongyluri n. sp. (Fellodistomidae, Tergestiinae), on the basis of morphological and molecular data. Adult worms of these two species were collected from, respectively, Hemiramphus spp. (Hemiramphidae) and Strongylura strongylura (Belonidae) caught in the coastal waters of Vietnam. Adult worms of L. halongi n. sp. are morphologically close to Lecithostaphylus gibsoni Cribb, Bray & Barker, 1992 ex Abudefduf whitleyi from Heron Island and Lecithostaphylus depauperati Yamaguti, 1970 ex Hemiramphus depauperatus from Hawaii, but differ from these species in having a larger cirrus sac and a different arrangement of vitelline fields. They also differ from Lecithostaphylus brayi Cabañas-Granillo, Solórzano-García, Mendoza-Garfias & Pérez-Ponce de León, 2020 in the 28S ribosomal DNA (rDNA) sequence data at the interspecific level. Adult worms of G. strongyluri n. sp. ex S. strongylura are morphologically similar to Gymnotergestia chaetodipteri, the only previously known species of this genus, described from Chaetodipterus faber in Jamaica. The new species differs from G. chaetodipteri in body shape, testicular arrangement and the size of the pharynx and eggs. The 28S rDNA-based phylogenetic analysis indicates that G. strongyluri n. sp. is closely related to Tergestia spp., rendering Tergestia paraphyletic. Genetic divergence values between G. strongyluri n. sp. and Tergestia spp. are similar to those among species in the genera Tergestia, Steringophorus and Proctoeces. Our molecular results indicate that G. strongyluri n. sp. and Tergestia spp. may belong the same genus, but additional molecular data are needed for the final conclusion.

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Description of a metacercaria of a zoogonid trematode Steganoderma cf. eamiqtrema Blend and Racz, 2020 (Microphalloidea: Zoogonidae), with notes on the phylogenetic position of the genus Steganoderma Stafford, 1904, and resurrection of the subfamily Lecithostaphylinae Odhner, 1911

Cited by 5 publications

References 32 publications

Morphological and molecular data on Pseudozoogonoides ugui Shimazu, 1974 (Digenea: Microphalloidea: Zoogonidae) ex Pseudaspius hakonensis (Günther, 1877) and taxonomic problems in Zoogoninae genera

Morphological and molecular data on Pseudozoogonoides ugui Shimazu, 1974 (Digenea: Microphalloidea: Zoogonidae) ex Pseudaspius hakonensis (Günther, 1877) and taxonomic problems in Zoogoninae genera

Phylogenetic Evidence for the Lissorchiid Concept of the Genus Anarhichotrema Shimazu, 1973 (Trematoda, Digenea)

New trematode species Lecithostaphylus halongi n. sp. (Zoogonidae, Microphalloidea) and Gymnotergestia strongyluri n. sp. (Fellodistomidae, Gymnophalloidea) from beloniform fishes in Vietnam

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