Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites

Introduced species may lose their natural parasites when invading a new habitat, may acquire new, local parasites or may introduce parasites from their native range. We studied the gastro-intestinal helminth fauna associated with the red-bellied squirrel Callosciurus erythraeus (Pallas, 1778) introd...

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Autores principales: Gozzi, Ana Cecilia, Guichon, María Laura, Benítez, Verónica Victoria, Troyelli, Adrián, Navone, Graciela Teresa
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ecología
Ciencias Naturales
Invasive squirrel
Helminth survey
Nematodes
Parasite release
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/93018
https://ri.conicet.gov.ar/handle/11336/9867
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-93018
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ecología
Ciencias Naturales
Invasive squirrel
Helminth survey
Nematodes
Parasite release
spellingShingle Ecología
Ciencias Naturales
Invasive squirrel
Helminth survey
Nematodes
Parasite release
Gozzi, Ana Cecilia
Guichon, María Laura
Benítez, Verónica Victoria
Troyelli, Adrián
Navone, Graciela Teresa
Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
topic_facet Ecología
Ciencias Naturales
Invasive squirrel
Helminth survey
Nematodes
Parasite release
description Introduced species may lose their natural parasites when invading a new habitat, may acquire new, local parasites or may introduce parasites from their native range. We studied the gastro-intestinal helminth fauna associated with the red-bellied squirrel Callosciurus erythraeus (Pallas, 1778) introduced in Argentina to evaluate its role as a host of either specific or acquired parasites in two invasion foci. We analyzed entire digestive tracts of 72 red-bellied squirrels captured in the main invasion focus (Luján, province of Buenos Aires) between February and May 2011, and in a secondary focus (Cañada de Gómez, province of Santa Fe) in December 2008. We only found two nematode specimens: an adult male belonging to the genus Pterygodermatites (Paucipectines) Quentin, 1969 and another adult male belonging to the genus Stilestrongylus (Freitas, Lent and Almeida, 1973). None of these genera were previously listed for the red-bellied squirrel in introduced areas, but a species of the genus Pterygodermatites was previously reported for this squirrel in its native habitat. These results indicate that, to date, the red-bellied squirrel in Argentina is accidentally parasitised by nematodes acquired in its new environment and has no specific gastro-intestinal helminths. This could be related with a “founder effect” and/or the lack of sciurid rodents that prevent the red-bellied squirrel to be colonized by pre-adapted helminth taxa. Other factors that may play a role are the small number of mammals with arboreal habits and some “encounter barriers” in the new environment that prevent the acquisition of helminths with a wide host spectrum.
format Articulo
Articulo
author Gozzi, Ana Cecilia
Guichon, María Laura
Benítez, Verónica Victoria
Troyelli, Adrián
Navone, Graciela Teresa
author_facet Gozzi, Ana Cecilia
Guichon, María Laura
Benítez, Verónica Victoria
Troyelli, Adrián
Navone, Graciela Teresa
author_sort Gozzi, Ana Cecilia
title Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
title_short Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
title_full Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
title_fullStr Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
title_full_unstemmed Gastro-intestinal helminths in the red-bellied squirrel introduced in Argentina: accidental acquisitions and lack of specific parasites
title_sort gastro-intestinal helminths in the red-bellied squirrel introduced in argentina: accidental acquisitions and lack of specific parasites
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/93018
https://ri.conicet.gov.ar/handle/11336/9867
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