New insights into the systematics of Cyclocoelidae (Trematoda: Echinostomatoidea) based on novel morphological and molecular data, with description of a new species and a new genus.

Autor: Vainutis KS; A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russian Federation. vainutisk@gmail.com.; Water Bioresources and Aquaculture Department, Fishery and Aquaculture Institute, The Far Eastern State Technical Fisheries University (FESTFU), Vladivostok, Russian Federation. vainutisk@gmail.com., Voronova AN; Pacific Branch of the Federal State Budget Scientific Institution 'Russian Federal Research Institute of Fisheries and Oceanography', Vladivostok, Russian Federation., Andreev ME; Far Eastern Federal University, Vladivostok, Russian Federation., Shchelkanov MY; A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russian Federation.; Far Eastern Federal University, Vladivostok, Russian Federation.; G.P. Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russian Federation.; Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch of the RAS, Vladivostok, Russian Federation.
Jazyk: angličtina
Zdroj: Systematic parasitology [Syst Parasitol] 2024 Oct 26; Vol. 101 (6), pp. 71. Date of Electronic Publication: 2024 Oct 26.
DOI: 10.1007/s11230-024-10192-x
Abstrakt: In light of the morphological and molecular data for cyclocoelids observed from the air sacs of Mareca strepera (Linnaeus) (Anatidae, Anseriformes) caught in the southern region of the Russian Far East, we suggest new insights into the systematics of the family Cyclocoelidae. A comparative morphological and phylogenetic analyzes revealed that new cyclocoelids represented the new genus and species Paracyclocoelum lobatum. Based on the 28S rRNA gene fragment we showed the significant genetic divergence of P. lobatum from the type species of the type genus for the family, Cyclocoelum mutabile (Zeder, 1800) Brandes, 1892 and along with the confusing morphological similarity by the prepharyngeal position of the genital pore it most likely indicate homologous development of the reproductive system of Paracyclocoelum and Cyclocoelum. Here, we provide a new dichotomous key for five cyclocoelid genera from the subfamily Cyclocoelinae including Paracyclocoelum n. g. The new genus Paracyclocoelum had sister relationship to the cyclocoelin genus Circumvitellatrema. Based on the polyphyletic interrelationships of Cyclocoelum and Circumvitellatrema the Cyclocoelinae were assigned with the status sensu lato.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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