The purpose of the research was to examine the effects of Trypanosoma brucei infection on different stages of gestation in female albino rats (Rattus norvegicus). The animals were divided into ten groups as follows: 15 animals infected on each of the following periods of pregnancy (days) 1-3, 4-6, 7-9, 10-12, 13-15, 16-18, and 19-21; 35 uninfected animals, out of which 10 were sacrificed immedi...

Many papers have been published on leptospira-positive rodents in selected areas of Japan. Rattus norvegicus, R. rattus, and R. rattus alexandrius trapped in urban areas and certain swamp rice fields in rural areas were found to carry L. icterohaemor-The latter two species of rodents are caught generally in the field and forest in rural areas. data), have been isolated from the rodent in Japan....

Toxocariasis is currently considered an important zoonosis in many countries and is usually attributed to larvae of Toxocara canis Werner, 1782 but less frequently, T. cat. This study attempts to compare the migration routes followed by T. canis and Toxocara cati (Schrank, 1788) in Rattus norvegicus Berkenhout, 1769 and to determine the percentage of larvae recovered in each organ of experiment...

Ingestion of novel prey by vertebrate predators that is followed by illness typically decreases the predators' eating the prey more readily than their pursuing or killing it. We used artificial prey-food items (rolling ball bearings that predicted food pellets) to model and extend this finding in laboratory rats. During daily experimental sessions presentations of a novel bearing-food combinati...

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Mitochondrial DNA from an Old World mouse, Mus musculus, and from an Old World rat, Rattus norvegicus, contain 19 and 22 distinct sites, respectively, for the 8 restriction endonucleases, BamHI, EcoRI, HaeII, HhaI, HincII, HindIII, HpaI and PstI. The relative positions of the sites have been mapped by the study of partial and double enzyme digests. Some sites may been conserverd between the mou...