First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina

The studies of helminth parasites in Argentine amphibians have focused on the Dry and Humid Chaco ecoregions; in the Dry Chaco the reports are from the Chaco and Formosa provinces. The aim of this work was to report the first record of Aplectana hylambatis (Baylis, 1927) Travassos, 1931 (Nematoda:...

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Main Authors: Maria Alejandra Villegas-Ojeda, Guido Fernández-Marinone, Mariana Jofré, Cynthya González
Format: Article
Language:English
Published: Universidad Nacional Autónoma de México 2025-02-01
Series:Revista Mexicana de Biodiversidad
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Online Access:https://revista.ib.unam.mx/index.php/bio/article/view/5370
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author Maria Alejandra Villegas-Ojeda
Guido Fernández-Marinone
Mariana Jofré
Cynthya González
author_facet Maria Alejandra Villegas-Ojeda
Guido Fernández-Marinone
Mariana Jofré
Cynthya González
author_sort Maria Alejandra Villegas-Ojeda
collection DOAJ
description The studies of helminth parasites in Argentine amphibians have focused on the Dry and Humid Chaco ecoregions; in the Dry Chaco the reports are from the Chaco and Formosa provinces. The aim of this work was to report the first record of Aplectana hylambatis (Baylis, 1927) Travassos, 1931 (Nematoda: Cosmocercidae) from San Luis province and the southernmost record for the Dry Chaco ecoregion. Specimens of Rhinella arenarum (Hensel, 1867) (n = 6), Leptodactylus mystacinus (Burmeister, 1861) (n = 13), and Odontophrynus cf. asper (n = 6) were analyzed. Specimens of A. hylambatis were collected from the large intestine of these hosts and were studied using light and scanning electron microscopy (SEM). In addition, relevant features are described, including the number and arrangement of caudal papillae, and of mamelon-like cuticular protuberances associated to the vulva. The morphological characteristics are compared and discussed in relation to those of specimens collected from other hosts in other localities of the country. The presence of A. hylambatis in localities of the Dry Chaco represents an expansion of the geographic range of this cosmocercid and the first record in L. mystacinus and O. cf. asper from Argentina.
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spelling doaj-art-e1953598b61f41f7852e7d14384db1472025-08-20T01:49:19ZengUniversidad Nacional Autónoma de MéxicoRevista Mexicana de Biodiversidad1870-34532007-87062025-02-019610.22201/ib.20078706e.2025.96.5370First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, ArgentinaMaria Alejandra Villegas-Ojeda0Guido Fernández-Marinone1Mariana Jofré2Cynthya González3Universidad Nacional de San LuisUniversidad Nacional de San Luis Universidad Nacional de San LuisUniversidad Nacional del Nordeste The studies of helminth parasites in Argentine amphibians have focused on the Dry and Humid Chaco ecoregions; in the Dry Chaco the reports are from the Chaco and Formosa provinces. The aim of this work was to report the first record of Aplectana hylambatis (Baylis, 1927) Travassos, 1931 (Nematoda: Cosmocercidae) from San Luis province and the southernmost record for the Dry Chaco ecoregion. Specimens of Rhinella arenarum (Hensel, 1867) (n = 6), Leptodactylus mystacinus (Burmeister, 1861) (n = 13), and Odontophrynus cf. asper (n = 6) were analyzed. Specimens of A. hylambatis were collected from the large intestine of these hosts and were studied using light and scanning electron microscopy (SEM). In addition, relevant features are described, including the number and arrangement of caudal papillae, and of mamelon-like cuticular protuberances associated to the vulva. The morphological characteristics are compared and discussed in relation to those of specimens collected from other hosts in other localities of the country. The presence of A. hylambatis in localities of the Dry Chaco represents an expansion of the geographic range of this cosmocercid and the first record in L. mystacinus and O. cf. asper from Argentina. https://revista.ib.unam.mx/index.php/bio/article/view/5370Aplectana hylambatisBufonidaeCosmocercidaeDry ChacoLeptodactylidaeOdontophrynidae
spellingShingle Maria Alejandra Villegas-Ojeda
Guido Fernández-Marinone
Mariana Jofré
Cynthya González
First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
Revista Mexicana de Biodiversidad
Aplectana hylambatis
Bufonidae
Cosmocercidae
Dry Chaco
Leptodactylidae
Odontophrynidae
title First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
title_full First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
title_fullStr First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
title_full_unstemmed First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
title_short First report of Aplectana hylambatis (Nematoda: Cosmocercidae) in amphibians from the San Luis province, Argentina
title_sort first report of aplectana hylambatis nematoda cosmocercidae in amphibians from the san luis province argentina
topic Aplectana hylambatis
Bufonidae
Cosmocercidae
Dry Chaco
Leptodactylidae
Odontophrynidae
url https://revista.ib.unam.mx/index.php/bio/article/view/5370
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