Abstract
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 titers of 1:25 and 1:50. Harp seals (n = 112) were seronegative. Probable maternal antibody transfer was observed in one harbor and one grey seal pup at 10 and 14 day of age, respectively. Transmission of T gondii in the marine environment is not understood. The discovery of T. gondii in marine mammals might indicate natural infections unknown because of lack of study or might indicate recent contamination of the marine environment from the terrestrial environment by natural or anthropogenic activities.
Citations
Sep 17, 2005·Animal Health Research Reviews·Dolores E HillJ P Dubey
Oct 15, 2011·Vector Borne and Zoonotic Diseases·Stacey A ElmoreChester G Moore
Mar 28, 2012·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Patrick D MathewsSolange M Gennari
May 23, 2008·Ecological Applications : a Publication of the Ecological Society of America·Kathy A BurekTodd M O'Hara
Nov 12, 2015·Journal of Wildlife Diseases·Christian BellehumeurCarl A Gagnon
Feb 19, 2011·Veterinary Parasitology·O CabezónS Almería
Jun 30, 2009·Veterinary Parasitology·J Owen D Slocombe
Oct 24, 2007·Veterinary Parasitology·Kristin Wear PrestrudAntti Oksanen
Sep 15, 2005·International Journal for Parasitology·P A ConradM E Grigg
Feb 11, 2015·Trends in Parasitology·Emily J JenkinsCraig Stephen
Jun 26, 2012·Veterinary Parasitology·Claudia Rengifo-HerreraSusana Pedraza-Díaz
Aug 5, 2011·Parasitology·A SimonN H Ogden
Sep 27, 2016·Diseases of Aquatic Organisms·Michelle M BarbieriCharles L Littnan
Sep 28, 2018·Diseases of Aquatic Organisms·Asma IqbalBrent Dixon
Sep 25, 2008·Zoonoses and Public Health·V MessierB Dixon
Jul 8, 2010·EcoHealth·Cassandra M KirkTodd M O'Hara
Nov 16, 2010·Canadian Journal of Microbiology·Benoît LévesqueDonald Murphy
Apr 5, 2019·Parasites & Vectors·Nicholas BachandEmily Jenkins
Oct 28, 2019·BMC Veterinary Research·Marie Christine M ObusanLemnuel V Aragones
Jul 31, 2020·Pathogens·Giuliana TerraccianoStefania Perrucci
Sep 3, 2009·Journal of Food Protection·Lorry B ForbesAlvin Gajadhar
Dec 4, 2020·Diseases of Aquatic Organisms·Caroline C SauvéPierre-Yves Daoust
Feb 26, 2020·Food and Waterborne Parasitology·Sarah J ReilingBrent R Dixon
Jul 17, 2012·The Veterinary Record·S-K JensenA Hall
Nov 21, 2020·Science·Jeremy M CohenJason R Rohr
Jul 14, 2021·Zoonoses and Public Health·Julie DucrocqDenis Talbot
Aug 19, 2021·PloS One·Marie-Lazarine PoulleCamille Lebarbenchon
Aug 20, 2021·Journal of Wildlife Diseases·Lena N Measures, Ron A M Fouchier