First record of Litomosoides pardinasi (Nematoda: Onchocercidae) in native and exotic rodents from Chile

Carlos Landaeta-Aqueveque, Juliana Notarnicola, Juana P. Correa, Andrea Yáñez-Meza, Analía Henríquez, Pedro E. Cattan, Carezza Botto-Mahan, FERNANDO LEON TORRES PEREZ

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We report the first record of Litomosoides pardinasi in native and exotic rodents from Chile. Litomosoides pardinasi, described in the Argentine Patagonia parasitizing Phyllotis xanthopygus and Oligoryzomys longicaudatus, was found in Chile parasitizing the peritoneal and thoracic cavities of O. longicaudatus (prevalence (P)= 18.9%, mean intensity (MI)= 57.3) and Phyllotis darwini (P= 4.2%, MI= 10), and in the peritoneal cavity of Rattus rattus (P= 1.24%; MI= 22.5). Total P in native rodents from Chile was significantly lower than in Argentina, while the total MI was higher. Prevalence and MI of L. pardinasi in O. longicaudatus from Chile and Argentina showed non-significant differences; prevalence in P. darwini from Chile was significantly lower than in P. xanthopygus from Argentina and than in Chilean O. longicaudatus. Our results, together with those from Argentina, support the hypothesis that L. pardinasi is well established in O. longicaudatus, but seems to be recently acquired by P. darwini and the exotic R. rattus. Considering the known host distribution of Litomosoides species among the sigmodontines, our results also support the hypothesis that L. pardinasi first colonized the Oryzomyini tribe and later, by different phenomena of host-switching, colonized the Phyllotini tribe and the exotic R. rattus.

Original languageEnglish
Pages (from-to)1032-1037
Number of pages6
JournalRevista Mexicana de Biodiversidad
Volume85
Issue number4
DOIs
StatePublished - 1 Dec 2014

Keywords

  • Filarioid
  • Host-switching
  • Nematodes
  • Oligoryzomys
  • Phyllotis
  • Rattus
  • Sigmodontine rodents

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