title: Evidence of potential gene flow in Trichinella spiralis and in Trichinella britovi in nature.
abstract: During a study on the epidemiology of trichinellosis in Spain, 91 animals and 9 samples of sausages homemade with pork were found positive for Trichinella. Parasite identification at the species level was carried out by the polymerase chain reaction with a random primer on single muscle larvae. Seventy-one animals harbored Trichinella spiralis (17 domestic pigs, 53 wild boars, 1 fox), and 17 were infected with Trichinella britovi (1 domestic pig, 13 wild boars, 3 foxes). Sausages were infected with T. spiralis. Three wild boars (3.3% of infected animals) harbored both species. The presence of both T. spiralis and T. britovi in the same host suggests that infections with 2 isolates of the same species can also occur, permitting the gene flow within the species.
authors.affiliation: Laboratory of Parasitology, Istituto Superiore di Sanità, Rome, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Pozio
authors.forename: F J
authors.initials: FJ
authors.lastname: Serrano
authors.forename: G
authors.initials: G
authors.lastname: La Rosa
authors.forename: D
authors.initials: D
authors.lastname: Reina
authors.forename: E
authors.initials: E
authors.lastname: Perez-Martin
authors.forename: I
authors.initials: I
authors.lastname: Navarrete
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D000835:Animals, Wild; D003433:Crosses, Genetic; D018509:DNA, Helminth / Q000032:analysis; D005260:Female; D016266:Food Parasitology; D005589:Foxes / Q000469:parasitology*; D005787:Gene Frequency; D008461:Meat Products / Q000469:parasitology; D051379:Mice; D018482:Muscle, Skeletal / Q000469:parasitology; D019105:Random Amplified Polymorphic DNA Technique / Q000662:veterinary; D015203:Reproducibility of Results; D013030:Spain; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology*; D014234:Trichinella / Q000235:genetics*; D017160:Trichinella spiralis / Q000235:genetics*; D014235:Trichinellosis / Q000469:parasitology / Q000662:veterinary*
chemical_list: D018509:DNA, Helminth