Genetic characterization of far eastern species of the genus &amp;lt;i&amp;gt;Crepidostomum&amp;lt;/i&amp;gt; (Trematoda: Allocreadiidae) by means of 28S ribosomal DNA sequences

Atopkin, D. M.; Shedko, M. B.

doi:10.4236/abb.2014.53027

Cited by 22 publications

(5 citation statements)

References 23 publications

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“…Among allocreadiids from the Holarctic region, our results using the 28S rDNA gene corroborate the validity of the genus Megalogonia as proposed by Curran et al [ 16 ], and the paraphyletic condition of the Crepidostomum observed by Atopkin and Shedko [ 3 ], Pérez-Ponce de León et al [ 45 ], Petkevičiūtė et al [ 49 ], and Atopkin et al [ 5 ].…”

Section: Discussionsupporting

confidence: 88%

“…New sequences obtained for the present study are in bold. Digeneans Host Host order Locality GenBank ID Reference 28S rDNA COI mtDNA Allocreadiidae Acrolichanus auriculatus Acipenser schrenckii ; Acipenser ruthenus ; Huso dauricus Acipenseriformes Russia MN524579 – MN524580 ; MN524583 ; MN524583 ; FR821397 – FR821398 – [ 3 , 5 ] Allocreadium gotoi Misgurnus anguillicaudatus Cypriniformes Iiyama City, Japan LC215274 – [ 59 ] Allocreadium isoporum Alburnus alburnus Cypriniformes Oster Lake, Karelia GU462125 – GU462126 …”

Section: Methodsmentioning

confidence: 99%

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Three new species of Creptotrema (Trematoda, Allocreadiidae) with an amended diagnosis of the genus and reassignment of Auriculostoma (Allocreadiidae), based on morphological and molecular evidence

et al. 2021

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Diversity of Creptotrema was investigated using morphological and molecular tools, including data for Creptotrema creptotrema (type-species). Three new species, parasites of Brazilian fishes, are described: Creptotrema conconae n. sp. (type-host, Imparfinis mirini Haseman), Creptotrema schubarti n. sp. (type-host, Characidium schubarti Travassos) and Creptotrema megacetabularis n. sp. (type-host, Auchenipterus osteomystax (Miranda Ribeiro)). The diagnosis of the genus was amended to include new features. The new species differ from each other mainly in terms of body shape, relative sucker size, and testes position. DNA sequences were obtained from Creptotrema spp. from Brazil, including 28S, ITS and COI. Genetic divergences among the new species and C. creptotrema varied from 2.1 to 5.2% (21–49 bp) for 28S, and 6.6 to 16.4% (21–45 bp) for COI. Phylogenetic analysis (28S) placed the newly generated DNA sequences of Creptotrema in a clade (Creptotrema clade sensu stricto) composed of C. creptotrema, the new species described herein, and all species previously described as Auriculostoma, revealing that Auriculostoma is best interpreted as a synonym of Creptotrema based on the principle of priority of zoological nomenclature. Creptotrema funduli, the single sequence of the genus previously available, was not grouped within the Creptotrema clade sensu stricto, suggesting the need for reevaluation of the taxonomic status of this species. Our results showed that Creptotrema represents a monophyletic genus of trematodes widely distributed across the Americas, which currently comprises 19 valid species of parasites of teleosts and anurans.

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Section: Discussionsupporting

confidence: 88%

Section: Methodsmentioning

confidence: 99%

Three new species of Creptotrema (Trematoda, Allocreadiidae) with an amended diagnosis of the genus and reassignment of Auriculostoma (Allocreadiidae), based on morphological and molecular evidence

et al. 2021

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“…Furthermore, if we accept that the only species of the genus for which molecular data are available, C. funduli , from fundulids in USA, is actually a member of the genus (see contrary opinions in Manter, 1962; Brooks, 1976), then molecular phylogenetic analyses shed light on the paraphyly of Creptotrema . Other studies have already demonstrated, through molecular analyses of the 28S rRNA gene, cases of paraphyletic genera within Allocreadiidae, which contrast with the morphological concept on which these genera were erected (see Atopkin & Shedko, 2014; Pérez-Ponce de León et al , 2016; Petkevičiūtė, 2018). Recent molecular phylogenetic analyses of the Allocreadiidae show that the ‘papillose allocreadiids’ ( sensu Hopkins, 1937) do not form a monophyletic assemblage; oral lobes apparently either arose or were secondarily lost several times during the evolutionary history of the group, depending on the plesiomorphic condition (see Hernández-Mena et al ., 2016, 2019; Pérez-Ponce de León et al ., 2016; Atopkin et al ., 2020).…”

Section: Discussionmentioning

confidence: 97%

Disentangling the evolutionary and biogeographical history of the freshwater fish trematode genus Creptotrema (Digenea: Allocreadiidae) using an integrative taxonomy approach: the case of Creptotrema agonostomi in Middle American mountain mullets

et al. 2020

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Species of the allocreadiid genus Creptotrema are parasites of freshwater fishes in the Americas. Species in the genus possess one pair of muscular oral lobes on the oral sucker. Currently, the genus contains eight species, six distributed in South America, one in Middle America and one in North America. Genetic data are only available for the North American species, Creptotrema funduli, a parasite of fundulids originally described from Oneida Lake, New York State. In this study, we obtained 28S ribosomal DNA sequences of trematodes morphologically similar to Creptotrema agonostomi from the mountain mullet, Dajaus monticola, across a wide geographical range in Middle America. Our molecular phylogenetic analyses showed that (1) the genus Creptotrema, as currently conceived, is not monophyletic; (2) the allocreadiids in mountain mullets should be re-allocated in the genus Pseudoparacreptotrema; and (3) the allocreadiid trematodes from D. monticola across Middle America represent four morphologically similar species, three of which can be distinguished genetically. These three new species are described herein using an integrative taxonomy approach. We contend that accurate estimates of species diversity and phylogenetic relationships among allocreadiids, and most likely other species of trematodes, necessarily require an integrative taxonomy approach that should consider at least DNA sequences and scanning electron microscopy.

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“…The distribution of these parasites coincides with the range of sturgeon (Skryabina, 1974;. Molecular-genetic data do not prove that C. auriculatum belongs to the Crepidostomum (Braun, 1900) genus (Atopkin & Shedko, 2014;Soldanova et al, 2017). The genus status of this parasite requires confirmation.…”

Section: Fig 3 Crepidostomum Auriculatum (Wedl 1858)mentioning

confidence: 90%

The parasitofauna of the Siberian sterlet Acipenser ruthenus marsiglii of the Lower Irtysh

Liberman¹,

Voropaeva

2018

Regul. Mech. Biosyst.

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In the Ob-Irtysh basin, studies on the parasitofauna of the Siberian sterlet are very limited and confined to the middle of the twentieth century. The decrease in the numbers of sterlet over the past half century may have led to a change in the qualitative and quantitative composition of the parasitofauna. The aim of this work is to study the parasitofauna of the Siberian sterlet in the rivers Irtysh and Tobol. 85 specimens of Siberian sterlet (L = 27.8–51.5 cm, 2+ – 6+) from the Tobol and Irtysh rivers were examined by the method of complete parasitological dissection during the periods from 5 to 21 June and from 14 to 22 July 2017. A comparison of the biodiversity of parasites was performed using the indices: Berger-Parker. 11 species of parasites were found, including four species specific to sturgeons: Cryptobia acipenseris (Joff, Lewashow, Boschenko, 1926), Haemogregarina acipenseris (Nawrotzky, 1914), Crepidostomum auriculatum (Wedl, 1858), Capillospirura ovotrichura (Skrjabin, 1924). Seven broadly specific species: Trichodina sp., Proteocephalus sp. (plerocercoids), Diplostomum chromatophorum mtc. (Vrown, 1931), Echinorhynchus cinctulus (Porta, 1905), Piscicola geometra (Linnaeus., 1761), Ergasilus sieboldi (Nordmann, 1832), Unionidae gen. sp. Cryptobia acipenseris and H. acipenseris were recorded for the first time in the Ob-Irtysh basin. C. acipenseris was found only in three fish from the total number of examined sterlet (3.5%). In the River Tobol the extent of infestation H. acipenseris was higher (22.7%) than in the River Irtysh 11.1%. The carriers of C. acipenseris and H. acipenseris in the Lower Irtysh are allegedly leeches of Piscicola geometra (10.6%). The most common parasites found were C. auriculatum (32.9%) and C. ovotrichura (15.3%). In the River Irtysh, metacercariae of Diplostomum chromatophorum (Vrown, 1931) (metacercariae) were discovered in the lens of the eye in the studied fish. The maximum EI of this parasite was noted in the fish sample near the city of Tobolsk – 12.5% with AI – 1 and IO – 0.12. In the Gornoslinkino area in June and July, the infection level was low (EI 4.3% and 8.3%, respectively). In the June sample of fish from the River Tobol no metacercariae of this species were detected. Single cases of infection of Proteocephalus sp. (plerocercoid), E. cinctulus, E. sieboldi, Unionidae gen. sp. were found. In the River Irtysh the parasitofauna was dominated by C. ovotrichura, in the River Tobol – C. auriculatum. The number of parasite species noted in the Siberian sterlet in the Ob-Irtysh basin according to our own and literary data is greater than that found in sterlet from the River Yenisei: 18 and 11 respectively. Common to the sterlet of the two basins are 8 species of parasites: Cryptobia acipenseris, Diclybothrium armatum, Crepidostomum auriculatum, Capillospirura ovotrichuria, Truttaedacnitis clitellarius, Echinorhynchus cinctulus, Piscicola geometra, Unionidae gen. sp. The fauna of the Ob-Irtysh basin was enriched by the "southern" narrowly specific parasite of sturgeon – H. acipenseris. For many years the infection of C. auriculatum has practically not changed.

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Genetic characterization of far eastern species of the genus <i>Crepidostomum</i> (Trematoda: Allocreadiidae) by means of 28S ribosomal DNA sequences

Cited by 22 publications

References 23 publications

Three new species of Creptotrema (Trematoda, Allocreadiidae) with an amended diagnosis of the genus and reassignment of Auriculostoma (Allocreadiidae), based on morphological and molecular evidence

Three new species of Creptotrema (Trematoda, Allocreadiidae) with an amended diagnosis of the genus and reassignment of Auriculostoma (Allocreadiidae), based on morphological and molecular evidence

Disentangling the evolutionary and biogeographical history of the freshwater fish trematode genus Creptotrema (Digenea: Allocreadiidae) using an integrative taxonomy approach: the case of Creptotrema agonostomi in Middle American mountain mullets

The parasitofauna of the Siberian sterlet Acipenser ruthenus marsiglii of the Lower Irtysh

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