A 10-year wildlife survey of 15 species of Canadian carnivores identifies new hosts or geographic locations for Trichinella genotypes T2, T4, T5, and T6

Veterinary Parasitology
Alvin A Gajadhar, Lorry Forbes

Abstract

A survey of wild carnivores in Canada was conducted over a 10-year period to determine the prevalence and genotypes of Trichinella. Muscle samples collected from 1409 animals representing 15 hosts species were enzymatically digested to recover Trichinella larvae. Larvae were recovered from a total of 287 (20.4%) animals and PCR identified four genotypes of Trichinella. Trichinella nativa was found in 5 host species and was the most commonly found genotype. Trichinella T6 was present in 7 species of carnivores, and coyote and badger are new host records for this genotype. The recovery of T. pseudospiralis and T. murrelli from cougars is the first documentation of these species in Canada and in cougars. The cougar was also the only host species in which all four genotypes of Trichinella were identified. Black bears and walruses had the highest tissue levels of larvae in this study and are also the species most frequently associated with human trichinellosis in Canada. This work identifies additional host species and expanded geographic ranges for 4 genotypes of Trichinella in North America. Failure to demonstrate T. spiralis in wildlife and continued negative results from ongoing surveillance activities in swine provide additiona...Continue Reading

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Citations

Dec 10, 2013·Trends in Parasitology·Edoardo Pozio
Jul 3, 2013·International Journal for Parasitology·Edoardo Pozio, Dante S Zarlenga
Jul 14, 2012·International Journal of Circumpolar Health·Sylvain LarratJean-François Proulx
Jul 5, 2011·Veterinary Parasitology·Mason V ReichardEdoardo Pozio
Feb 5, 2015·Parasites & Vectors·Mason V ReichardEdoardo Pozio
Jan 24, 2012·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Detiger B Dunams-MorelBenjamin M Rosenthal
Apr 27, 2016·Veterinary Parasitology·Edoardo Pozio
Aug 28, 2010·Veterinary Parasitology·Kjetil AsbakkChristian M O Kapel
Mar 23, 2017·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Daniel DalcinAndrea K Boggild
Apr 5, 2017·Journal of Helminthology·J Dupouy-CametH Yera
Aug 3, 2012·The American Journal of Tropical Medicine and Hygiene·Rebecca L HallJeffrey L Jones
Jul 11, 2019·International Journal for Parasitology. Parasites and Wildlife·Rajnish SharmaEmily Jenkins
May 27, 2021·Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária·Diana Maritza EcheverryCarlos Landaeta-Aqueveque
Sep 4, 2021·Veterinary Parasitology : Regional Studies and Reports·Mason V ReichardEdoardo Pozio

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