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      A new species of Torrestrongylus (Trichostrongylidae, Anoplostrongylinae) from Macrotus waterhousii (Chiroptera: Phyllostomidae) in Central Mexico Translated title: Une nouvelle espèce de Torrestrongylus (Trichostrongylidae, Anoplostrongylinae) parasite de Macrotus waterhousii (Chiroptera: Phyllostomidae) du Mexique central

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          Abstract

          A new species of nematode, Torrestrongylus tetradorsalis n. sp., is described herein, based on specimens recovered from the small intestine of the leaf-nosed bat, Macrotus waterhousii, from the Biosphere Reserve “Sierra de Huautla” in the state of Morelos, Mexico. The new species is included in Torrestrongylus because it features a bursa of the type 3 – 2, a divided cephalic vesicle with an anterior half in the shape of an umbrella, and a posterior widened half. The new species can be distinguished from the only other congener T. torrei Pérez-Vigueras, 1935 by four key features: first, by the absence of cervical alae in both males and females; second, by the relatively longer second half of the cephalic cap; third, by the configuration of the dorsal ray, that does not have a medial terminal ray, and finally, by the structure of the spicules. This is the second species in the genus, previously known from bats of the families Phyllostomidae and Molossidae in Cuba, and now in Mexico.

          Translated abstract

          Une nouvelle espèce de nématode, Torrestrongylus tetradorsalis n. sp. est décrite ici, à partir de spécimens collectés dans l’intestin grêle du chiroptère Phyllostomidae Macrotus waterhousii, de la Réserve de la Biosphère « Sierra de Huautla » dans l’État de Morelos au Mexique. La nouvelle espèce est incluses dans Torrestrongylus car elle possède une bourse de type 3-2, une vésicule céphalique divisée avec une moitié antérieure en forme de parapluie et une moitié postérieure élargie. La nouvelle espèce est distinguée de la seule espèce congénère T. torrei Pérez-Vigueras 1935 par quatre caractéristiques clés ; premièrement l’absence d’ailes cervicales chez les mâles et les femelles ; deuxièmement, la seconde moitié de la capsule céphalique relativement plus longue ; troisièmement, la configuration du rayon dorsal, qui ne possède pas de rayon médian terminal ; finalement, par la structure des spicules. Ceci est la deuxième espèce du genre, déjà connu des chauves-souris des familles Phyllostomidae et Molossidae à Cuba, et maintenant au Mexique.

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          Trichostrongyloid nematodes and their vertebrate hosts: reconstruction of the phylogeny of a parasitic group.

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            The relationships of marsupial-dwelling Viannaiidae and description of Travassostrongylus scheibelorum sp. n. (Trichostrongylina: Heligmosomoidea) from mouse opossums (Didelphidae) from French Guiana.

            The trichostrongylid nematode Travassostrongylus scheibelorum sp. n. from the Linnaeus' mouse opossum, Marmosa murina (Linnaeus) (type host), and the woolly mouse opossum, Marmosa demerarae (Thomas), from French Guiana is described. The nematodes have a synlophe with ridges frontally oriented from right to left, six dorsal and six ventral, at midbody; seven dorsal and seven ventral posterior to the vulva, and two cuticular thickenings within the lateral spaces; a long dorsal ray and a pointed cuticular flap covering the vulva. This is the 12th species of Travassostrongylus Orloff, 1933, which includes species featuring ridges around the synlophe and a didelphic condition. These traits contrast with those in other genera in the Viannaiidae Neveu-Lemaire, 1934, which feature ventral ridges on the synlophe of adults and a monodelphic condition. Members of the family are chiefly Neotropical and are diagnosed based on the presence of a bursa of the type 2-2-1, 2-1-2 or irregular, and cuticle without ridges on the dorsal side (at least during one stage of their development). Herein, we present a reconstruction of the ancestral states of the didelphic/monodelphic condition and the cuticular ridges that form the synlophe in opossum-dwelling trichostrongyles, namely Travassostrongylus and Viannaia Travassos, 1914. Our investigations suggest they are not reciprocal sister taxa and that the change from didelphy to monodelphy and the loss of dorsal ridges, occurred in the common ancestor of species of Viannaia. These results suggest a synlophe with three ventral ridges is not plesiomorphic in the opossum dwelling trichostrongylids.
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              Author and article information

              Journal
              Parasite
              Parasite
              parasite
              Parasite
              EDP Sciences
              1252-607X
              1776-1042
              2015
              29 October 2015
              : 22
              : ( publisher-idID: parasite/2015/01 )
              : 29
              Affiliations
              [1 ] Laboratorio de Parasitología de Animales Silvestres, Facultad de Ciencias Biológicas, Universidad Autónoma del Estado de Morelos Av. Universidad No. 1001, Col. Chamilpa C.P. 62210 Cuernavaca Morelos Mexico
              [2 ] Centro de Investigaciones Biológicas, Universidad Autónoma del Estado de Morelos Av. Universidad No. 1001, Col. Chamilpa C.P. 62210 Cuernavaca Morelos Mexico
              [3 ] Facultad de Ciencias Agropecuarias, Universidad Autónoma del Estado de Morelos Av. Universidad No. 1001, Col. Chamilpa C.P. 62210 Cuernavaca Morelos Mexico
              [4 ] Department of Zoology, Southern Illinois University 62901-6501 Carbondale Illinois USA
              Author notes
              Article
              parasite150062 10.1051/parasite/2015029
              10.1051/parasite/2015029
              4626622
              26514594
              c3daaf88-d925-4084-8595-b02a3d1eb9d1
              © J.M. Caspeta-Mandujano et al., published by EDP Sciences, 2015

              This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

              History
              : 10 August 2015
              : 08 October 2015
              Page count
              Figures: 4, Tables: 1, Equations: 0, References: 23, Pages: 8
              Funding
              Funded by: Universidad Autónoma del Estado de Morelos
              Award ID: PROMEP-UAEMOR/07/203
              Award ID: PIFI-UAEM 2010–2011
              Funded by: Consejo Nacional de Ciencia y Tecnología http://dx.doi.org/10.13039/501100003141
              Award ID: 241472
              Categories
              Research Article

              nematode,parasite,torrestrongylus tetradorsalis,macrotus waterhousii,chiroptera,mexico

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