A Pilot Study on Deworming Wild Foxes for Echinococcus spp. in Qinghai, China
Abstract
Background: Wild foxes play an important role in echinococcosis epidemics. There have been a few studies investigating Echinococcus spp. in the Qinghai-Tibet Plateau area, China, but none on the prevention and control of Echinococcus spp. in wild foxes.
Methods: From 2016 March through December 2019, two wild fox dens were selected as two test sites based on prior long-term camera screening and observation. Anthelmintic praziquantel tablets were placed near the two dens of wild foxes, and the wild foxes freely consumed the anthelmintic drugs. Morphological methods were used to detect initially the parasite species, and PCR molecular methods were used to identify accurately parasite and host species.
Results: Parasite eggs of E. multilocularis (2/11, 18.2%) were found in 11 fecal samples. Importantly, the eggs of E. multilocularis (1/21, 4.8%) were found again in the feces of the foxes one year later; moreover, the eggs of E. multilocularis (2/19, 10.5%) still existed in the feces of the foxes two years later.
Conclusion: Wild foxes were repeatedly infected with E. multilocularis and that deworming for prevention and control is required at least twice per year. Prevention and control methods for echinococcosis in wild foxes were explored, providing a scientific basis for the prevention and control of echinococcosis in wild animals.
2. Wang Z, Wang X, Liu X. Echinococcosis in China, a review of the epidemiology of Echinococcus spp. Ecohealth. 2008;5(2):115-26.
3. Craig PS. Epidemiology of human alveolar echinococcosis in China. Parasitol Int. 2006;55 Suppl:S221-5.
4. Liu H, Xiao N, Yang SJ, et al. Epidemiological characteristics of canine Echinococcus infection in Qinghai, Tibet Plateau of China. Chinese Journal of Schistosomiasis Control. 2017;29(02):129-38. (In Chinese).
5. Kan W, Zhao QB, Ma RL, et al. Investigation of Echinococcus infections in dogs in Qinghai Province. Chinese Journal of Veterinary Medicine. 2017;53(01):45-7. (In Chinese).
6. Wu WP, Wang H, Wang Q, et al. A nationwide sampling survey on echinococcosis in China during 2012-2016. Chinese Journal of Parasitology and Parasitic Disease. 2018;36(01):1-14. (In Chinese).
7. Li W, Guo Z, Duo H, et al. Survey on helminths in the small intestine of wild foxes in Qinghai, China. J Vet Med Sci. 2013;75(10):1329-33.
8. Ulflmmelt, Thelen U, Eskens U. Investigation of Echinococcus multilocularis in red foxes and their possible relationship to human alveolar echinococcosis. Tierärztliche Umschau. 2009;64(4):199-211.
9. Nahorski WL, Knap JP, Pawlowski ZS, et al. Human alveolar echinococcosis in Poland: 1990-2011. PLoS Negl Trop Dis. 2013;7(1):e1986.
10. Schweiger A, Ammann RW, Candinas D, et al. Human alveolar echinococcosis after fox population increase, Switzerland. Emerg Infect Dis. 2007;13(6):878-82.
11. Ikeda T, Yoshimura M, Onoyama K, et al. Where to deliver baits for deworming urban red foxes for Echinococcus multilocularis control: new protocol for micro-habitat modeling of fox denning requirements. Parasites & Vectors. 2014;7:357.
12. Takahashi K, Uraguchi K, Hatakeyama H, et al. Efficacy of anthelmintic baiting of foxes against Echinococcus multilocularis in northern Japan. Vet Parasitol. 2013;198(1-2):122-6.
13. Umhang G, Possenti A, Colamesta V, et al. A systematic review and meta-analysis on anthelmintic control programs for Echinococcus multilocularis in wild and domestic carnivores. Food Waterborne Parasitol. 2019;15:e00042.
14. Nonaka N, Sano T, Inoue T, et al. Multiplex PCR system for identifying the carnivore origins of faeces for an epidemiological study on Echinococcus multilocularis in Hokkaido, Japan. Parasitol Res. 2009;106(1):75-83.
15. Guo ZH, Kubo M, Kudo M, et al. Growth and genotypes of Echinococcus granulosus found in cattle imported from Australia and fattened in Japan. Parasitol Int. 2011;60(4):498-502.
16. Navajas M, Cotton D, Kreiter S, et al. Molecular approach in spider mites (Acari: Tetranychidae): preliminary data on ribosomal DNA sequences. Exp Appl Acarol. 1992;15(4):211-8.
17. Guo Z, Li W, Peng M, et al. Epidemiological study and control trial of taeniid cestode infection in farm dogs in Qinghai Province, China. J Vet Med Sci. 2014;76(3):395-400.
18. Comte S, Raton V, Raoul F, et al. Fox baiting against Echinococcus multilocularis: contrasted achievements among two medium size cities. Prev Vet Med. 2013;111(1-2):147-55.
19. Janko C, Konig A. Disappearance rate of praziquantel-containing bait around villages and small towns in southern Bavaria, Germany. J Wildl Dis. 2011;47(2):373-80.
20. Wen H, Vuitton L, Tuxun T, et al. Echinococcosis: advances in the 21st century. Clin Microbiol Rev. 2019;32(2):e00075-18.
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Issue | Vol 16 No 4 (2021) | |
Section | Short Communication(s) | |
DOI | https://doi.org/10.18502/ijpa.v16i4.7880 | |
Keywords | ||
Echinococcus multilocularis Wild foxes Prevention and control Qinghai-Tibet Plateau area |
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