The first discovery of Microphallus abortivus trematode in the Black Sea: Morphological and molecular characteristics

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  • Authors: Y. Andryushina1, D. Atopkin2
  • Affiliations:
    1. A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Sevastopol, Russian Federation
    2. Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS, Vladivostok, Russian Federation
  • Keywords: trematode, metacercaria, Microphallus abortivus, gastropods, Hydrobia acuta, Black Sea, morphology, molecular data
  • UDC: 595.122.2-14(262.5)

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Abstract

Morphological and molecular data were obtained for encysted metacercariae found in the digestive gland of a mollusc Hydrobia acuta from the Black Sea. Morphologically, these metacercariae correspond to the family Microphallidae and the genus Microphallus. Results of phylogenetic analyses based on partial 28S rDNA sequence data provide evidence for the fact that the metacercariae from H. acuta are closely related to Microphallus abortivus, with high statistical support. Our survey shows that M. abortivus completes its life cycle in the Black Sea, and gastropods H. acuta are used as the second intermediate hosts, while marine and coastal birds can serve as the definitive hosts. This study extends the range of M. abortivus to the Black Sea.

Keywords: trematode, metacercaria, Microphallus abortivus, gastropods, Hydrobia acuta, Black Sea, morphology, molecular data

Authors

Y. Andryushina

junior researcher

A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Sevastopol, Russian Federation

https://orcid.org/0000-0002-2627-8727

https://elibrary.ru/author_items.asp?id=770725

D. Atopkin

leading researcher, PhD

Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS, Vladivostok, Russian Federation

https://orcid.org/0000-0001-8417-3424

https://elibrary.ru/author_items.asp?id=761612

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Funding

This work was carried out within the framework of IBSS state research assignment “Biodiversity as the basis for the sustainable functioning of marine ecosystems, criteria and scientific principles for its conservation” (No. 124022400148-4).