Skip to main content Accessibility help

Loss of helminth species diversity in the large hairy armadillo Chaetophractus villosus on the Tierra del Fuego Island, Argentina

  • M.C. Ezquiaga (a1), A.M. Abba (a2) and G.T. Navone (a1)


The aim of this work is to compare the taxonomic diversity of parasite species of the large hairy armadillo Chaetophractus villosus in its native range and in another recently introduced population (Tierra del Fuego island), and to evaluate whether the isolation of the latter determines a decrease in its parasitic diversity. Forty specimens from Buenos Aires and Tierra del Fuego Provinces were collected and examined for helminths. Eleven parasite species were found in the native population, and only one species was present in Tierra del Fuego (Trichohelix tuberculata). This may be explained because isolation and climatic conditions prevent encounters between potential host species and infective forms of parasites. Further sampling will be needed throughout the entire Patagonia steppe to confirm how the characteristic parasitic fauna of C. villosus behaves across the armadillo's southern distribution.


Corresponding author


Hide All
Abba, A.M. & Cassini, M.H. (2008) Ecology and conservation of three species of armadillos in the Pampas region, Argentina. pp. 300305 in Vizcaíno, S.F. & Loughry, J.W. (Eds) Biology of the Xenarthra. Florida, University Press of Florida.
Abba, A.M., Tognelli, M.F., Seitz, V.P., Bender, J.B. & Vizcaíno, S.F. (2012) Distribution of extant xenarthrans (Mammalia: Xenarthra) in Argentina using species distribution models. Mammalia 76, 123136.
Abba, A.M., Poljak, S. & Superina, M. (2014a) Chaetophractus villosus. The IUCN Red List of Threatened Species. Version 2014.2. Available at (accessed accessed 15 August 2014).
Abba, A.M., Poljak, S., Gabrielli, M., Teta, P. & Pardiñas, U.F.J. (2014b) Armored invaders in Patagonia: recent southward dispersion of armadillos (Cingulata, Dasypodidae). Mastozoología Neotropical 21, 311318.
Anderson, R.C. (2000) Nematode parasites of vertebrates. Their development and transmission. 2nd edn. 650 pp. Farnham Royal, UK, CABI Publishing.
Burkart, R., Bárbaro, N.O., Sánchez, R.O. & Gómez, D.A. (1999) Eco-regiones de la Argentina. 43 pp. Buenos Aires, Administración de Parques Nacionales, PRODIA.
Carlini, A.A. & Scillato-Yané, G.J. (1999) Evolution of quaternary xenarthrans (Mammalia) of Argentina. pp. 149–176 in Rabassa, J. & Salemme, M.C. (Eds) Quaternary of South America and Antarctic Peninsula, vol. 10. Rotterdam, Balkema.
Fujita, O., Abe, N., Oku, Y., Sanabria, L., Inchaustti, A. & Kamiya, M. (1995) Nematodes of armadillos in Paraguay: a description of a new species Aspidodera esperanzae (Nematoda: Aspidoderidae). Journal of Parasitology 81, 936941.
Hoppe, E.G.L., Araújo de Lima, R.C., Tebaldi, J.H., Athayde, A.C.R. & Nascimento, A.A. (2009) Helminthological records of six-banded Armadillos Euphractus sexcinctus (Linnaeus, 1758) from the Brazilian semi-arid region, Patos county, Paraíba state, including new morphological data on Trichohelix tuberculata (Parona and Stossich, 1901) Ortlepp, 1922 and proposal of Hadrostrongylus ransomi nov. comb. Brazilian Journal of Biology 69, 423428.
MacArthur, R.H. & Wilson, E.O. (1967) The theory of island biogeography. 203 pp. Princeton, Princeton University Press.
Magnanou, E. & Morand, S. (2006) Insularity and micromammal–macroparasite relationships. pp. 295318 in Morand, S., Krasnov, B. & Poulin, R. (Eds) Micromammals and macroparasites. From evolutionary ecology to management. Japan, Springer.
Massoia, E. & Chebez, J.C. (1993) Mamíferos silvestres del archipiélago fueguino. 261 pp. Buenos Aires, LOLA (Literature of Latin America).
Morand, S., Krasnov, B.R., Poulin, R. & Degen, A.A. (2006) Who is who and how they interact? in Morand, S., Krasnov, B. & Poulin, R. (Eds) Micromammals and macroparasites. Japan, Springer.
Navone, G.T. (1987) Estudios parasitológicos en edentados argentinos. III. Trichostrongílidos, Macielia elongata sp. nov.; Moennigia virilis sp. nov. y Trichohelix tuberculata (Parona y Stossich, 1901) Ortlepp, 1922 (Molineidae-Anoplostrongylinae) parásitos de Chaetophractus villosus Desmarest y Tolypeutes matacus (Desmarest) (Xenarthra-Dasypodidae). Neotropica 33, 105117.
Navone, G.T. (1990) Estudio de la distribución, porcentaje y microecología de los parásitos de algunas especies de edentados argentinos. Studies on Neotropical Fauna and Environment 25, 199210.
Navone, G.T. & Merino, M. (1989) Contribución al conocimiento de la fauna endoparasitaria de Lama guanicoe Muller, 1776, de la Península Mitre, Tierra del Fuego, Argentina. Boletín Chileno de Parasitología 44, 4651.
Poljak, S., Escobar, J., Deferrari, G. & Lizarralde, M. (2007) Un nuevo mamífero introducido en la Tierra del Fuego: el ‘peludo’ Chaetophractus villosus (Mammalia, Dasypodidae) en Isla Grande. Revista Chilena de Historia Natural 80, 285294.
Poljak, S., Confalonieri, V., Fasanella, M., Gabrielli, M. & Lizarralde, M. (2010) Phylogeography of the armadillo Chaetophractus villosus (Dasypodidae, Xenarthra): Post-glacial range expansion from Pampas to Patagonia (Argentina). Molecular Phylogenetics and Evolution 55, 3846.
Poulin, R. & Morand, S. (2004) Parasite biodiversity. 216 pp. Washington, Smithsonian Books.
Reiczigel, J. & Rózsa, L. (2005) Quantitative Parasitology 3.0. Budapest, Distributed by the authors.
Roberts, L.S. & Janovy, J. Jr (2009) Gerald D. Schmidt & Larry S. Roberts' Foundations of Parasitology. 8th edn. 701 pp. Dubuque, Iowa, McGraw-Hill.
Rózsa, L., Reiczigel, J. & Majoros, G. (2000) Quantifying parasites in samples of hosts. Journal of Parasitology 86, 228232.
Sarà, M. & Morand, S. (2002) Island incidence and mainland population density: mammals from Mediterranean islands. Diversity and Distributions 8, 19.
Soibelzon, E., Carlini, A.A., Tonni, E.P. & Soibelzon, L.H. (2006) Chaetophractus vellerosus (Mammalia: Dasypodidae) in the Ensenadan (Early–Middle Pleistocene) the southeastern Pampean region (Argentina). Paleozoogeographical and paleoclimatic aspects. Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen 12, 734748.
Torchin, M.E. & Mitchell, C.E. (2004) Parasites, pathogens, and invasions by plants and animals. Frontiers in Ecology and the Environment 2, 183190.
Torchin, M.E., Lafferty, K.D., Dobson, A.P., McKenzie, V.J. & Kuris, A.M. (2003) Introduced species and their missing parasites. Nature 421, 628630.
Yamaguti, S. (1959) Systema Helminthum. Volume II. The cestodes of vertebrates. 860 pp. New York, Interscience Publisher.
Zanini, F., Laferrara, M., Bitsch, M., Pérez, H. & Elissondo, M.C. (2006) Epidemiological studies on intestinal helminth parasites of the Patagonian grey fox (Pseudalopex griseus) in Tierra del Fuego, Patagonia, Argentina. Veterinary Parasitology 136, 329334.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Helminthology
  • ISSN: 0022-149X
  • EISSN: 1475-2697
  • URL: /core/journals/journal-of-helminthology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed