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[the life-history of sarcocystis singaporensis zaman and colley, 1976 in the definitive and intermediate host (author's transl)].sporulated oocysts and sporocysts (9.3 x 7.3 micrometer) of sarcocystis singaporensis - isolated from freshly imported snakes (python reticulatus) - were fed to various animals to test their function as suitable intermediate hosts (nmri-mice, albino rats, meriones unguiculatus, golden hamsters, guinea pigs, mastomys natalensis, field-voles [microtus arvalis], pigeons, and chickens). only in rats were muscle-cysts formed. the optimal dose was 150 sporocysts per rat. two generations of merogony co ...19806771934
sarcocystis singaporensis zaman and colley, (1975) 1976, sarcocystis villivilliso sp. n., and sarcocystis zamani sp. n.: development, morphology, and persistence in the laboratory rat, rattus norvegicus.sporocysts obtained in singapore in the feces of the boid snake, python reticulatus, were given by mouth to laboratory rats, mice, and a monkey (macaca mulatta). infections developed in rats only. schizonts were observed in vascular endothelium of various tissues of rats examined at 7 to 15 days of infection; and in each of 20 rats examined at 1 mo to 2 yr, cysts of three species of sarcocystis were observed. based on observations made by light and electron microscopy, one species was identified ...19816787185
fine structural development of microgamonts of sarcocystis singaporensis in python reticulatus.three 4-month-old reticulated pythons (python reticulatus), hatched from eggs laid by a newly caught female from singapore island, were fed on muscles of sarcocystis singaporensis-infected rattus rattus caught in singapore. snakes were sacrificed 5, 6 and 8 days later, the infected tissues were studied by transmission electron microscopy. the present communication summarizes findings on microgamont stages. both premature and mature microgamonts were already present in the snake sacrificed 5 days ...200011133107
ultrastructural study of the development of sarcocystis singaporensis sarcocysts in the muscles of its rat host.laboratory rats fed sporocysts of sarcocystis singaporensis (zaman & colley, 1975) zaman & colley, 1976 originating from singapore were euthanized 22, 23, 33 and 80 days later. sporocysts were extracted from feces of either naturally or laboratory-infected python reticulatus. electron microscopically examined longue and esophageal muscles yielded images of successive developing stages of sarcocysts. the primary wall evolved from a continuous thin layer into folds and later, into villar protrusio ...200212116862
fine structure of sarcocystis singaporensis merogony stages preceding sarcocyst formation in the rat.the fine structure of merogony stages of sarcocystis singaporensis (zaman and colley, 1975) is described from experimentally infected laboratory rats, 10 days after being fed sporocysts obtained from naturally infected python reticulatus from singapore. infection was shown to consist exclusively of s. singaporensis. parasites developed in the endothelial cells of the lungs, brain, kidney and heart. infection comprised meronts prior to division, dividing and divided meronts, and dispersed merozoi ...200211822741
fine structure of the development of sarcocystis singaporensis in python reticulatus from macrogamont to sporulated oocyst stage.three, 4-month old reticulated pythons (python reticulatus) hatched from eggs laid by a newly caught female from singapore island, were fed on muscles of sarcocystis singaporensis-infected rattus rattus caught in singapore. snakes were sacrificed five, six and eight days later. the infected tissues were studied by transmission electron microscope. the present communication summarizes findings on macrogamont and oocyst stages. in the premature stages, rough endoplasmic reticulum consolidate into ...200011031755
sarcocystis singaporensis: studies on host specificity, pathogenicity, and potential use as a biocontrol agent of wild rats.host specificity and pathogenicity of sarcocystis singaporensis were investigated as a prerequisite to a subsequent application of the parasite as a biocontrol agent of wild rats in egypt. after inoculation of 7 snake species comprising the families elapidae, viperidae, colubridae, and boidae with sarcocysts, sporocyst development was only observed in a reticulated python. among amphibians, reptiles, and rodents that orally received various sporocyst doses in the laboratory, 2 x 10(4) sporocysts ...19968604097
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