Waterborne protozoan and microsporidian parasites in Eurasian beavers (Castor fiber)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00618152" target="_blank" >RIV/60077344:_____/25:00618152 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12220/25:43911216

Result on the web

<a href="https://doi.org/10.1016/j.ijppaw.2025.101050" target="_blank" >https://doi.org/10.1016/j.ijppaw.2025.101050</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijppaw.2025.101050" target="_blank" >10.1016/j.ijppaw.2025.101050</a>

Result language

angličtina

Original language name

Waterborne protozoan and microsporidian parasites in Eurasian beavers (Castor fiber)

Original language description

The Eurasian beaver (Castor fiber) is an expanding species in Europe in recent decades due to reintroductions and natural population growth. Beavers expanded rapidly in the second half of the 20th century, and their expansion was particularly rapid in the Danube basin. Nowadays, the majority of the continuous population located in the central and eastern parts of the continent and a large disjunct population in Norway and Sweden. Despite the increasing population size, the role of the beaver as a source of waterborne pathogens is not firmly established or is often inferred from circumstantial data. In order to extend knowledge about the composition of the parasite fauna of beavers occurring in Slovakia, 21 faecal samples taken near their burrows from three sites (located in the Topl'a, Poprad and Danube river basin) were examined microscopically and by polymerase chain reaction (PCR). PCR-positive specimens were further examined by DNA sequencing. Parasites were detected in 21% of the examined beavers, specifically the protozoa Cryptosporidium spp. (n = 2), Blastocystis sp. (n = 1), and microsporidia Enterocytozoon bieneusi (n = 1) and Encephalitozoon spp. (n = 1). Using the sequence analysis, two variants of Cryptosporidium proliferans, a new subtype of Blastocystis sp., genotype D of E. bieneusi and Encephalitozoon intestinalis were identified. A putatively novel Blastocystis subtype (ST), originated from a site near the Danube river (southwestern Slovakia), was proposed based on high genetic divergence from the closest described subtype ST12 (11.9%) and unique phylogenetic position in a clade composed of ST's 35-38. The increased risk of zoonotic transmission or transmission to other animals was particularly evident in the site near the Topl'a river (northeastern Slovakia), where fungal spores of zoonotic genotype D of E. bieneusi and E. intestinalis, together with oocysts of the potentially zoonotic C. proliferans, were found.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30303 - Infectious Diseases

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal for Parasitology: Parasites and Wildlife

ISSN

2213-2244

e-ISSN

2213-2244

Volume of the periodical

26

Issue of the periodical within the volume

APR

Country of publishing house

AU - AUSTRALIA

Number of pages

8

Pages from-to

101050

UT code for WoS article

001439430400001

EID of the result in the Scopus database

2-s2.0-85218995729