Evidence of potential gene flow in Trichinella spiralis and in Trichinella britovi in nature.
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.
Pozio
E
E
Laboratory of Parasitology, Istituto Superiore di Sanità, Rome, Italy.
Serrano
F J
FJ
La Rosa
G
G
Reina
D
D
Perez-Martin
E
E
Navarrete
I
I
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*
D018509:DNA, Helminth