| experimental toxoplasma gondii infection in grey seals (halichoerus grypus). | laboratory-reared animals were used to assess the susceptibility of seals (halichoerus grypus) to toxoplasma gondii infection. four seals were each orally inoculated with 100 or 10,000 oocysts of t. gondii (veg strain), and another 4 seals served as negative controls. occasionally, mild behavioral changes were observed in all inoculated seals but not in control animals. a modified agglutination test revealed the presence of antibodies to t. gondii in sera collected from inoculated seals and mice ... | 2004 | 15165046 |
| seroprevalence of toxoplasma gondii in canadian pinnipeds. | sera (n = 328) collected from phocids (1995-97) from the east coast of canada, including harp seals (phoca groenlandica), hooded seals (cystophora cristata), grey seals (halichoerus grypus), and harbor seals (phoca vitulina), were diluted 1:25, 1:50, and 1:500 and tested by a modified agglutination test for antibodies to toxoplasma gondii. titers equal to or greater than 1:25 were considered evidence of exposure. grey seal (11/122, 9%), harbor seal (3/34, 9%), and hooded seal (1/60, 2%) had tite ... | 2004 | 15362830 |
| infectivity of toxoplasma gondii in northern traditional (country) foods prepared with meat from experimentally infected seals. | serological and clinical evidence of human toxoplasmosis in the canadian arctic indicates a food safety risk associated with the consumption of wild game meat. such meat often is eaten raw or partially cooked in locally prepared traditional (country) foods, but no data have been collected to describe survival of toxoplasma gondii forms in these foods. the muscle of grey seals (halichoerus grypus) experimentally infected with t. gondii oocysts was used to prepare three country foods: igunaq, a fe ... | 2009 | 19722415 |
| seroprevalence of toxoplasma gondii in north-eastern atlantic harbor seal (phoca vitulina vitulina) and grey seal (halichoerus grypus). | antibodies to toxoplasma gondii were determined in serum samples from 47 grey seals (halichoerus grypus) and 56 harbor seals (phoca vitulina vitulina) from the atlantic coasts of united kingdom and france. antibodies to t. gondii assayed by the modified agglutination test (mat) were found in 14 (13.6%; ic(95%): 7.0-20.2) of 103 seals tested, with titres of 1:25 in 13 seals and 1:50 in 1 seal. seroprevalence against t. gondii (mat 1:25 or higher) was significantly higher in grey seals (23.4%) com ... | 2011 | 21330059 |
| human pathogens in marine mammal meat – a northern perspective. | only a few countries worldwide hunt seals and whales commercially. in norway, hooded and harp seals and minke whales are commercially harvested, and coastal seals (harbour and grey seals) are hunted as game. marine mammal meat is sold to the public and thus included in general microbiological meat control regulations. slaughtering and dressing of marine mammals are performed in the open air on deck, and many factors on board sealing or whaling vessels may affect meat quality, such as the ice use ... | 2014 | 24344685 |