Survey of Trichinella in American minks (Neovison vison Schreber, 1777) and wild rodents (Muridae and Cricetidae) in Chile

Espinoza-Rojas, Hellen; Lobos-Chavez, Felipe; Silva-dela Fuente C.; Echeverry, Diana; Muñoz-Galaz, Javiera; Yañéz-Crisóstomo, Claudio; Oyarzún-Ruiz P.; Ortega, René; Sandoval, Daniel; Henríquez AnaLía; Moreno Salas, Lucila; Acosta, Gerardo; Landaeta-Aqueveque, Carlos

Keywords: chile, mammals, rats, mink, zoonoses, trichinella

Abstract

Trichinellosis is a zoonosis with worldwide distribution. Several hosts have been recognized around the world; however, there is a lack of knowledge of the role of feral mammals in Chile in its transmission. Herein, we tested muscle samples from 555 individuals among American minks (Neovison vison Schreber, 1777. n = 100) and several myomorph rodent species (Muridae and Cricetidae. n = 455) from southern Chile by artificial digestion to detect Trichinella larvae and identified the larvae at the species level through molecular analyses. Rodents were captured in agricultural and wild protected areas of several administrative regions (hereafter: region), while minks were captured in agricultural areas of the Los Ríos region. Trichinella spiralis larvae were detected in a synanthropic black rat (0.24%) of the Ñuble region and in seven minks (7%) trapped in agricultural areas of the Los Ríos region. The present results suggest that T. spiralis circulation is restricted to synanthropic rodents and minks living in agricultural areas where the parasite circulates among domesticated pigs. This study represents the first record of T. spiralis in a mustelid mammal in South America, increasing the number of feral species that could participate in the reservoir.

Más información

Título de la Revista: ZOONOSES AND PUBLIC HEALTH
Volumen: 021;68:
Fecha de publicación: 2021
Página de inicio: 842
Página final: 848
Idioma: Inglés
DOI:

https://doi.org/10.1111/zph.12845

Notas: ISI