Parasite species diversity in stray dogs from the city of Sofia

Authors

DOI:

https://doi.org/10.61308/ITBA6831

Keywords:

parasite species diversity, stray dogs, helminths, protozoa, city of Sofia

Abstract

A coprological examination was conducted on stray dogs captured in Sofia as part of other preventive veterinary measures. The animals were divided into three age groups: ≤1 year, 1–5 years, and >5 years. Routine coproscopic methods were employed, including isolation of tapeworm segments, fecal flotation with both sodium chloride and magnesium sulfate, and larvoscopy using the modified Baermann technique. The overall prevalence of parasitic infection in the studied dogs was 81.32%. The results revealed the presence of reproductive stages (eggs, oocysts, larvae, and mature proglottids) of the following helminths and parasitic protozoa: Ancylostomatidae (42.59%), Trichuris spp. (28.70%), Toxocara canis (27.78%), Toxascaris leonina (9.26%), Dipylidium caninum (4.63%), Taenia hydatigena (1.85%), Isospora spp. (1.85%), and Angiostrongylus vasorum (0.93%). The highest prevalence of parasitic infection was observed in dogs from the youngest age group (90.91%). These findings confirm that stray dogs in Sofia serve as significant reservoirs and disseminators of parasites, posing a potential risk of transmission to domestic dogs and humans.

References

Calvopina, M., Cabezas-Moreno, M., Cisneros-Vásquez, E., Paredes-Betancourt, I. & Bastidas-Caldes, C. (2023). Diversity and prevalence of gastrointestinal helminths of free-roaming dogs on coastal beaches in Ecuador: Potential for zoonotic transmission. Veterinary Parasitology: Regional Studies and Reports, 40 (2023), 100859. DOI: https://doi.org/10.1016/j.vprsr.2023.100859

Georgieva, D., Ivanov, A. & Prelesov, P. (1999). Studies on the parasitic fauna in stray dogs in the Stara Zagora region. Bulgarian Journal of Veterinary Medicine, 2 (2/3), 121 - 124.

Iliev, P., Kirkova, Z. & Tonev, A. (2020). Preliminary study on the prevalence of endoparasite infections and vector-borne diseases in outdoor dogs in Bulgaria. Helminthologia, Slovak Academy of Sciences, 57(2), 171 - 178. DOI: https://doi.org/10.2478/helm-2020-0016

Iliev, P., Kirkova, Z., Ivanov, A., Prelezov, P., Tonev, A. & Kalkanov, I. (2017). Retrospective analysis on helminthic and protozoan infections in dogs and cats in Bulgaria. Bulgarian Journal of Veterinary Medicine, 20(1), 389 - 393.

Kamenov, Y., Kanchev, K. & Radev, V. (2009). Studies on helminth infestation in canids from Northwestern Bulgaria. In: Proceedings of the Jubilee Conference with International Participation “Traditions and Modernity in Veterinary Medicine” of the Faculty of Veterinary Medicine, University of Forestry, Sofia, 298 - 303.

Kirkova, Z., Georgieva , D. & Raychev , E. (2006). Study on the prevalence of trichuriasis in different categories of dogs and wild carnivores. Bulgarian Journal of Veterinary Medicine, 9(2), 141 - 147.

Kanchev, K., Radev, V. & Kamenov, Y. (2016). Guide for Practical Lessons in Veterinary Parasitology. Publishing House of the University of Forestry, Sofia. ISBN 978-954-332-142-1 (Bg).

Kanchev, K., Kamenov, Y., Salamitova, K. & Radeva, P. (2016). Helminth status of domestic dogs with gastro-enteritis from Sofia town region. “Proceeding from Ann. Int. Conf. “20 years FVM in UF” ISSN 1313-4337, Yundola, 2014, 159 - 168 (Bg).

Lalkovski, N. & Sabev, P. (2009). Studies on the prevalence of endoparasites in dogs in Sofia, Bulgaria. In: Proceedings of the Scientific Conference of NDRVMI, 169 - 172.

Otranto, D., Dantas-Torres, F., Mihalca, A. D., Traub, R. J., Lappin, M. & Baneth, G. (2017). Zoonotic Parasites of Sheltered and Stray Dogs in the Era of the Global Economic and Political Crisis. Trends Parasitology, 33(10), 813 - 825. DOI: https://doi.org/10.1016/j.pt.2017.05.013

Panayotova-Pencheva, M. (2022). Biodiversity of endoparasites in domestic cats and dogs from the city of Sofia, Bulgaria. Acta Morphologica et Anthropologica, 29, 53 - 61. DOI: https://doi.org/10.7546/AMA.29.1-2.2022.08

Radev, V., Lalkovski, N., Zhelyazkov, P., Kostova, T., Sabev, P., Nedelchev, N. & Vassileva, R. (2016). Prevalence of gastrointestinal parasites and Dirofilaria spp. in stray dogs from some regions in Bulgaria. Bulgarian Journal of Veterinary Medicine, 19(1), 57 - 62. DOI: https://doi.org/10.15547/bjvm.872

Radev, V., Sabev, P., Kostova, T., Katerinova, I. & Nedelchev, N. (2011). Parasitic diseases associated with dogs and cats – conditions for emergence and spread. In: Proceedings of the Jubilee Scientific Conference “110 Years of NDRVMI”, 147 - 151.

Stoimenov, K. & Zhelyazkov, P. (1994). Study on the cestode fauna of stray dogs in the Sofia region. Veterinary Collection, 6 - 7, 24.

Taylor, M. A., Coop, R. L. & Wall, R. L. (2016) Veterinary parasitology. 4th ed. Oxford: Wiley-Blackwell. Ltd Atrium South Gate Chichester West Sussex PO19 8SQ UK.

Zajac, A. M. & Conboy, G. A. (2012) Veterinary Clinical Parasitology. 8th ed. John Wiley & Sons; Blacksburg, VA, USA.

Zurliyski, P. (1983). Study on the prevalence of Toxocara canis in dogs and an attempt at therapy with fenbendazole. Veterinary Collection, 81(12), 21 - 25.

Downloads

Published

29.10.2026

How to Cite

Rafailov, R., Ivanov, S., & Kanchev, K. (2026). Parasite species diversity in stray dogs from the city of Sofia. Bulgarian Journal of Animal Husbandry, 63(5), 63-67. https://doi.org/10.61308/ITBA6831