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industrial livestock farms. PhD thesis (Veterinary Sciences, 03.00.19. Parasitology). Minsk, 1–20 [In Russian]. Mironenko, V. M. 2007. Sporulation technique for Eimeria oocysts and device for its implementation. A collection of articles of young scientists “Youth and science in 21st century” . Belarus, Vitebsk, 2, 18–20 [In Russian]. Mironenko, V. M., Korchevskaia, H. A. 2014. IT-Identification of disease agents of parasitoses, 22−26. In: Parasitoses of animals in the National Park “Pripiatskii” and fight measures against them with usage of IT-technologies. Vitebsk

. A., LUCY, F.E., GRACZYK, T.K., BROADERS, M.A., TAMANG, L., CONNOLLY, M. (2009): Fate of Cryptosporidium parvum and Cryptosporidium hominis oocysts and Giardia duodenalis cysts during secondary wastewater treatments. Parasitol. Res., 105: 689 - 696. DOI: 10.1007/s00436-009-1440-y CUTOLO, S.A., MATTÉ, M.H., ROCHA, A.A. (2003): Monitoring of parasitological contamination in treated wastewater from activat ed sludge system. Manag. Enviro. Qual., 17(1): 45 - 56. DOI: 10.1108/14777830610639431 DEMAR, M., AJZENBERG, D., MAUBON, D., DJOSSOU, F., PANCHOE, D., PUNWASI, W

-115. Bangoura B., Mundt H.C., Schmäschke R., Westphal B., Daugschies A. (2011). Prevalence of Eimeria bovis and Eimeria zuernii in German cattle herds and factors influencing oocyst excretion. Parasitol Res., 109 Suppl. 1: S129-138. Baricco G., Rambozzi L., Birolo M., Menzano A., Rossi L. (2005). Efficacy of oregano essential oil in coccidiosis control of chronically infected goats. In: Proc. 9th ESVCN Congress, 22-24.09.2005, Grugliasco (TO), Italy, p. 5. Carroll J.A., Burdick N.C., Chase C.C. Jr, Coleman S.W., Spiers D.E. (2012). Influence of environmental temperature on

Summary

Virginia opossum, Didelphis virginiana, is a synanthropic mammal associated with peridomestic areas of Yucatán, However, little is known about the gastrointestinal parasite infections of this species. The infection prevalence, mean abundance and mean intensity of eggs and oocysts of gastrointestinal parasites, in opossums captured in the peridomestic areas were estimated in six rural localities of Yucatán, Mexico. Eighty-four faecal samples were processed by flotation technique. McMaster test was used to estimate the number of helminth eggs and protozoa oocysts per gram of feces. Seven genera of gastrointestinal parasites were identified, and then infection prevalence was estimated as follows: Protozoa Eimeria sp. (51.9 %) and Sarcocystis sp. (1 %); nematodes Ancylostoma sp. (80.56 %), Cruzia sp. (62.04 %), Trichuris sp. (60.19 %), Capillaria sp. (29.63 %), Turgida sp. (23.15 %), Toxocara sp. (11.11 %), and Ascaris sp. (1.85 %); and one acanthocephalan: Oligacanthorhynchus sp. (14.81 %). This is the first study on the diversity of gastrointestinal parasites in Virginia opossums, and first evidence about the potential role of opossums in the transmission of zoonotic gastrointestinal parasites in peridomestic areas of Yucatán, Mexico.

.A.: Identification of species and sources of Cryptosporidium oocysts in storm waters with a small-subunit rRNA based diagnostic and genotyping tool. Appl Environ Microbiol 2000, 66, 5492-5498.

-141603591-6.10023-5 de Souza LEB, da Cruz JF, Teixeira Neto MR, Albuquerque GR, Melo ADB, Tapia DMT (2015): Epidemiology of Eimeria infections in sheep raised extensively in a semiarid region of Brazil. Revista Brasileira de Parasitologia Veterinária, 24, 410-415. doi: 10.1590/S1984-29612015070. Dittmar K, Mundt HC, Daugschies A, Bangoura B (2010): Ovine coccidiosis in housed lambs in Saxony-Anhalt (Central Germany). Berliner und Münchener Tierärztliche Wochenschrift, 123, 49-57. Gauly M, Krauthahn C, Bauer C, Erhardt G (2001): Pattern of Eimeria oocyst output and repeatability in

References Abbas R.Z., Colwell D.D., Gilleard J. (2012). Botanicals: An alternative approach for the control of avian coccidiosis. World’s Poultry Sci. J., 68: 203-215. Anonymous(2008). Report from the Commission to the Council and the European Parliament on the use of coccidiostats and histomonostats as feed additives. Brussels, 5.05.2008, COM, 233. Arczewska- W łosek A., Świ ątkiewicz S. (2012). The effect ofadietary herbal extract blend on the performance of broilers challenged with Eimeria oocysts. J. Anim. Feed Sci., 21: 133-142. Arczewska- W łosek A., Świ

, H. C., Guy, C. S., McGarry, J. W., Guy, F., Willams, D. J. L., Kelly, D. F., Trees, A. J. (2001): Experimental studies on the transmission of Neospora caninum between cattle. Res. Vet. Sci., 70: 163–168 http://dx.doi.org/10.1053/rvsc.2001.0457 [12] Dijkstra, Th., Eysker, M., Schares, G., Conraths, F. J., Wouda, W., Barkema, H. W. (2001): Dogs shed Neospora caninum oocysts after ingestion of naturally infected bovine placenta but not after ingestion of colostrum spiked with Neospora caninum tachyzoites. Int. J. Parasitol., 31: 747–752 http://dx.doi.org/10.1016/S

is suitable for quantification of coccidia oocysts in bird droppings. Pakistan Veterinary Journal, 33, 291–295. Vila M, Basnou C, Pysek P, Josefsson M, Genovesi P, Gollasch S, Nentwig W, Olenin S, Roques A, Roy D, Hulme PE, DAISIE partners (2010): How well do we understand the impacts of alien species on ecosystem services? A pan-European, cross-taxa assessment. Frontiers in Ecology and the Environment, 8, 135–144. doi: 10.1890/080083. Woods CA, Contreras L, Willner-Chapman G, Whidden HP (1992): Myocastor coypus . Mammalian Species, 398, 1–8. doi: 10

’s sandpits with parasitic eggs and oocysts especially by Toxocara in Prague area. Čsl. Epidemiol. Mikrobiol. Imunol., 31(4): 232–235