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Peer-reviewedCC BYInternational journal for parasitology. Parasites and wildlife

Internal parasites of the Eurasian beaver (Castor fiber) in Lesser Poland region (Poland) - occurrence and diversity.

  • Marta Basiaga1
  • Adam Wójcicki2
  • Jerzy Kowal1
  • Marek Wajdzik3
  1. 1University of Agriculture in Kraków, Faculty of Animal Science, Department of Zoology and Animal Welfare, Al. Mickiewicza 24/28, Kraków, 30-059, Poland.
  2. 2Forest Research Institute, Department of Forest Ecology, ul. Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland.
  3. 3University of Agriculture in Kraków, Faculty of Forestry, Department of Forest Biodiversity, Al. 29 Listopada 46, Kraków, 31-425, Poland.
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Abstract

Between 2017 and 2019, necropsies were performed on 26 Eurasian beavers (Castor fiber) from the Lesser Poland Voivodeship (Małopolska Region), Poland, to investigate the composition of their helminth fauna. Two host-specific helminth species were identified - Stichorchis subtriquetrus and Travassosius rufus. Trematode S. subtriquetrus was more prevalent, infecting 88.5% of beavers (95% CI: 69.8-97.6%) with a mean intensity of 132.7 ± 114.7 parasites per host (range: 2-454), whereas nematode T. rufus occurred in 69.2% of hosts (95% CI: 48.2-85.7%), with a mean intensity of 306.7 ± 493.3 (range: 7-2057). The abundance of neither S. subtriquetrus nor T. rufus was significantly associated with host sex, body mass, age or landscape type, season, and site (p > 0.05). Likewise, no significant correlation was found between the abundances of the two helminth species (p > 0.05). In contrast, the numbers of male and female T. rufus recovered from individual hosts were strongly positively correlated (r = 0.98, p < 0.001), with females consistently predominating. These findings are consistent with previous studies reporting the dominance of these species in beavers.

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Cite

BibTeXRIS
BibTeX
@article{basiaga2026internal,
  title = {{Internal parasites of the Eurasian beaver (Castor fiber) in Lesser Poland region (Poland) - occurrence and diversity.}},
  author = {Marta Basiaga and Adam Wójcicki and Jerzy Kowal and Marek Wajdzik},
  journal = {International journal for parasitology. Parasites and wildlife},
  year = {2026},
  month = oct,
  doi = {10.1016/j.ijppaw.2026.101305},
  url = {https://europepmc.org/article/MED/42921209},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Internal parasites of the Eurasian beaver (Castor fiber) in Lesser Poland region (Poland) - occurrence and diversity.
AU  - Marta Basiaga
AU  - Adam Wójcicki
AU  - Jerzy Kowal
AU  - Marek Wajdzik
PY  - 2026
DA  - 2026/10/16
JO  - International journal for parasitology. Parasites and wildlife
DO  - 10.1016/j.ijppaw.2026.101305
UR  - https://europepmc.org/article/MED/42921209
AB  - Between 2017 and 2019, necropsies were performed on 26 Eurasian beavers (Castor fiber) from the Lesser Poland Voivodeship (Małopolska Region), Poland, to investigate the composition of their helminth fauna. Two host-specific helminth species were identified - Stichorchis subtriquetrus and Travassosius rufus. Trematode S. subtriquetrus was more prevalent, infecting 88.5% of beavers (95% CI: 69.8-97.6%) with a mean intensity of 132.7 ± 114.7 parasites per host (range: 2-454), whereas nematode T. rufus occurred in 69.2% of hosts (95% CI: 48.2-85.7%), with a mean intensity of 306.7 ± 493.3 (range: 7-2057). The abundance of neither S. subtriquetrus nor T. rufus was significantly associated with host sex, body mass, age or landscape type, season, and site (p > 0.05). Likewise, no significant correlation was found between the abundances of the two helminth species (p > 0.05). In contrast, the numbers of male and female T. rufus recovered from individual hosts were strongly positively correlated (r = 0.98, p < 0.001), with females consistently predominating. These findings are consistent with previous studies reporting the dominance of these species in beavers.
SN  - 2213-2244
ER  -