| the prevalence of serum antibodies to toxoplasma gondii in ontario mammals. | the prevalence of seropositive reactions to toxoplasma gondii was studied in farm animals, companion animals, wild rodents and birds. of the animals tested, 17% of cattle, 65% of sheep, 45% of pigs, 9% of horses, 33% of dogs and 20% of cats were seropositive by the sabin-feldman dye test. in addition 11% of mice (mus musculus), 5% of deer mice (peromyscus), 3% of rats (rattus norvegicus) and less than 2% of sparrows (passer domestcus) were seropositive. all samples from short-tailed field mice ( ... | 1978 | 667705 |
| transfer coefficient of 226ra from vegetation to meadow voles, microtus pennsylvanicus, on u mill tailings. | the 226ra level in vegetation growing on u mine tailings in elliot lake, ontario, canada, was 211 + 22 mbq g-1 (dry weight) compared to less than 7 mbq g-1 (dry weight) in material from a control site. skeletons of meadow voles (microtus pennsylvanicus) established on the tailings had concentrations of 226ra of 6,083 +/- 673 mbq per animal in winter; 7,163 +/- 1,077 mbq per animal in spring; 1,506 +/- 625 mbq per animal in summer; and 703 +/- 59 mbq per animal in fall, compared to less than 7 mb ... | 1986 | 3519533 |
| toxoplasmosis: a serological survey in ontario wildlife. | sera from seven species of wild animals in ontario were examined for antibody to toxoplasma gondii using the sabin-feldman dye test. of 158 sera tested, 53% of the red foxes (vulpes vulpes), 56% of the striped skunks (mephitis mephitis), 78% of the coyotes (canis latrans), 33% of the black bears (ursus americanus), 18% of the short tailed shrews (blarina brevicauda) and none of the field voles (microtus pennsylvanicus) had antibody. antibody to t. gondii was present in sera from wild animals cap ... | 1976 | 16502687 |