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Comparative analysis of the helminth fauna of Dasypus hybridus and Chaetophractus villosus (Xenarthra: Cingulata) in the Pampas region, Argentina

María Cecilia Ezquiaga ORCID logo, Tatiana Agustina Rios, Agustín Manuel Abba and Graciela Teresa Navone
From the journal Mammalia

Abstract

Chaetophractus villosus and Dasypus hybridus are the most widespread and abundant armadillos inhabiting the Pampas grasslands. Studies on the parasitic fauna from an ecological perspective are scarce in both species. We describe and compare the component communities of C. villosus and D. hybridus in the Pampas ecoregion of Argentina and analyse if the composition and structure of the parasitic communities of these host species reveal trophic behaviour and/or habitat use. In the population of C. villosus 10 species of helminths were found, namely Ancylostoma caninum, Aspidodera fasciata, Aspidodera scoleciformis, Mazzia bialata, Moennigia celinae, Orihelia anticlava, Strongyloides sp., Trichohelix tuberculata (Nematoda) and Mathevotaenia sp. (Cestoda), whereas in the population of D. hybridus four species were found, A. fasciata, Delicata abbai, Pterygodermatites chaetophracti and Strongyloides sp. Only A. fasciata and Strongyloides sp. were present in both species. Prevalences and intensities were similar in Strongyloides sp. In A. fasciata, however, there were differences regarding mean intensity. Diversity was higher in C. villosus than in D. hybridus. The differences may be related to the diet, behaviour, evolutionary histories or immune response of the species studied. A combination of several of these factors would possibly influence the composition of their parasitic fauna.


Corresponding author: María Cecilia Ezquiaga, Centro de Estudios Parasitológicos y de Vectores (CONICET, UNLP), Boulevard 120 s/n entre 60 y 64, 1900La Plata, Buenos Aires, Argentina, E-mail:

Funding source: Universidad Nacional de La Plata

Award Identifier / Grant number: N861

Funding source: Agencia Nacional de Promoción Científica y Tecnológica

Award Identifier / Grant number: PICT 2016–0691

Acknowledgments

We thank Luis G. Pagano, Fernando C. Galliari, Luis Rossi and Juan P. Luaces for their invaluable help in the field, and Rosario Iglesias for her aid with the map.

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Researchfunding: This work was supported by the Universidad Nacional de La Plata (grant number N861) and the Agencia Nacional de Promoción Científica y Tecnológica (grant number PICT 2016–0691).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-07-13
Accepted: 2020-09-11
Published Online: 2020-10-27
Published in Print: 2021-03-26

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