Seroprevalence of Toxoplasma gondii in Harbor Seals (Phoca vitulina) in Southern Puget Sound, Washington PDF Format - [58KB]

Seroprevalence of Toxoplasma gondii in Harbor Seals (Phoca vitulina) in Southern Puget Sound, Washington D. M. Lambourn, S. J. Jeffries, and J. P. Dubey ABSTRACT: As part of the Puget Sound Ambient Monitoring Program of the Washington Department of Fish and Wildlife, serum samples from 380 harbor seals (Phoca vitulina) were tested for antibodies to Toxoplasma gondii in the modified agglutination test (MAT) incorpo-rating formalin-fixed tachyzoites and mercaptoethanol. Antibodies to T. gondii were found in 29 of 380 (7.6%) seals with titers of 1:25 in 13, 1:50 in 14, and >1:500 in 2 seals. Results indicate natural exposure of these wild marine mammals to T. gondii oocysts. Related links: Observations of Harbor Seal Predation on Hood Canal Salmonids from 1998 to 2000 Trends and Status of Harbor Seals in Washington State: 1978–1999