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Short Note

New Experimental Data on the Laboratory Rat as a Definitive Host of Sarcocystis rodentifelis

Nauji eksperimentiniai duomenys: laboratorinė žiurkė kaip definityvinis Sarcocystis rodentifelis šeimininkas

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Pages 121-124 | Accepted 02 Feb 1998, Published online: 28 Aug 2012
 

Abstract

An experiment on 30 Wistar Norway laboratory rats was carried out. The animals were infected by feeding them with ground skeletal muscles of 10 laboratory rats with high intensity of muscle cysts Sarcocystis rodentifelis. From the 8th to the 47th day p.i. fully sporulated oocysts and from the 10th to the 70th day p.i.—sporocysts, typical of genus Sarcocystis, were found in mucosal scrapings and in the rest of the small intestine wall in 23 out of 26 rats. The average size of oocysts was 14,6±0,07 × 11,0±0,1 (14,0–16,0 × 9,2–12,5) μm (n=58), sporocysts −10,6±0,08 × 7,5±0,05 (9,4–12,3 × 7,0–8,5) μm (n=58). These data allow us to assume that the laboratory rat serves both as the intermediate and definitive host for the species S. rodentifelis. This is the first record on the finding of Sarcocystis oocysts and sporocysts in the mucosa of the small intestine of rodents.

Reziumė

Eksperimente su 30 laboratorinių žiurkių (Rattus norvegicus) nustatyta, kad žiurkė gali būti ne tik tarpinis, bet ir definityvinis Sarcocystis rodentifelis šeimininkas. Sušėrus žiurkėms faršo, paruošto iš 10 Žiurkių raumenų, intensyviai užkrėstų sarkocistomis, jų plonosios žarnos gleivinėje susiformuoja pilnai sporuliavusios oocistos ir sporocistos. Oocistos aptiktos nuo 8 iki 47 dienos, o sporocistos—nuo 10 iki 70 d. Vidutinis oocistų dydis buvo 14,6±0,07 × 11,0±0,1 (14,0−16,0 × 9,2−12,5) μm (n=58), sporocistų −10,6±0,08 × 7,5±0,05 (9,4−12,3 × 7,0−8,5) μm (n=58). Tai pirmas atvejis, kai Sarcocystis oocistos ir sporocistos rastos graužikų plonosios žarnos gleivinėje.

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