A new species of Serpentirhabdias Tkach, Kuzmin & Snyder, 2014 (Nematoda: Rhabdiasidae) parasitic in the brown ground snake Atractus major Boulenger (Reptilia: Serpentes: Dipsadidae) in Brazil (original) (raw)
Related papers
2010
Rhabdias filicaudalis n. sp. (Nematoda: Rhabdiasidae) from the lung of Spilotes pullatus (Serpentes: Colubridae) is described. The host snake was captured in the municipality of Avaré, São Paulo State, Brazil. Rhabdias filicaudalis n. sp. differs from all other species by the combination of the following characters: straight body, truncated anterior end, six weakly developed lips arranged in two opposite groups of three, pre-equatorial vulva, oesophagus length/body length ratio (%) 4.9-7.5 (5.8^0.6), nerve ring distance from anterior end/oesophagus length ratio (%) 36.9-61.1 (49.8^6.4), tail length/body length ratio (%) 3.0-5.5 (4.0^0.5), vulva distance from anterior end/body length ratio (%) 39.9-51.7 (45.9^3.5), and a cuticular filiform tail tip.
Parasitology international, 2018
A new species of the genus Serpentirhabdias Tkach, Kuzmin et Snyder, 2014, S. moi n. sp., is described from a colubroid snake Chironius exoletus from Caxiuanã National Forest, State of Pará, Brazil. The species is characterised by having a triangular oral opening, absence of the buccal capsule, presence of six minute onchia in the oesophastome, and excretory glands of approximately the same length as the oesophagus. These qualitative morphological characters, as well as some measurements, differentiate the new species from other Neotropical and Nearctic Serpentirhabdias spp. The morphological description of parasitic adults of S. moi n. sp. is complemented by the description of free-living stages including males, females, and infective larvae. Comparative analysis of partial sequences of cox1 and 12S mitochondrial genes strongly supported the status of S. moi n. sp. as a new species. Molecular phylogeny based on sequences of the nuclear DNA region spanning the 3' end of the 18S ...
Systematic parasitology, 2021
Serpentirhabdias mamlambo n. sp. is described from the lung of the herald snake, Crotaphopeltis hotamboeia (Laurenti) in KwaZulu-Natal Province, South Africa. The new species is characterised by the small lips, the absence of the buccal capsule, the large excretory glands (1.5-2.3 times longer than the oesophagus), and the numerous eggs in uteri. Serpentirhabdias mamlambo n. sp. differs from other Serpentirhabdias spp. in the presence of M-shaped cuticular folds on dorsal and ventral sides of apical surface, the eye-shaped internal labial papillae, and the distinct dilatation of the oesophagus at its mid-length. Morphological differentiation of S. mamlambo n. sp. from its congeners is supported by molecular evidence based on cox1 mitochondrial gene, and ITS and partial 28S region of nuclear rDNA. Serpentirhabdias mamlambo n. sp. is the first species of the genus Serpentirhabdias described from the Afrotropical Realm.
Journal of Venomous Animals and Toxins including Tropical Diseases, 2007
The aim of the present study was to evaluate the frequency of rhabdiasid nematodes in recently captured Crotalus durissus terrificus snakes from São Paulo State, Brazil. Fifty snakes (34 males and 16 females) were studied and each one was evaluated for the presence of that nematode at the moment of receipt at the Institution and after 90 days of quarantine inside individual cages. Tracheopulmonary washes were examined. Snakes that died during quarantine underwent necropsy and lung examination. Analysis of the results obtained at the two evaluation times (0 and 90 days), in addition to the data obtained during necropsies, showed that 44% (18 males and 4 females) of the C. d. terrificus snakes were naturally infected by rhabdiasid nematodes. These data demonstrate the parasitism level in natural conditions and are important for the sanitary handling of these reptiles in captivity.
Snakes of Campo Grande municipality, Mato Grosso do Sul state, Central Brazil
2018
The Cerrado harbors one of the most global richness biodiversity of Squamates. I the past years, several new localities have been sampled, providing important data regarding the snake diversity within this domain. Few reptile and/or snake inventories have been performed in the state of Mato Grosso do Sul, and none carried out in the municipality of Campo Grande. In this paper, we present the first list of snake species registered in the municipality of Campo Grande based on specimens housed in the Colecao Zoologica da Universidade Federal de Mato Grosso do Sul. We recorded 38 species distributed in the families Dipsadidae (21), Colubridae (6), Viperidae (5), Elapidae (2); and the families Anomalepididae, Boidae, Leptotyphlopidae and Typhlopidae were composed by solely on species each. The fauna of snakes registered in Campo Grande is characterized by species typical from domains of open formations, which some are Cerrado endemics (e.g. Trilepida koppesi , Chironius flavolineatus , C...
Revista Brasileira de Zoologia, 2003
Ascaridoid nematodes of Ophidascaris Baylis, 1921 are commonly found parasitizing snakes worldwide. This paper reports to the description of O. durissus sp. nov., with basis on nematodes recovered from the rattlesnake Crotalus durissus L., 1758, in Brazil. MATERIALS AND METHODS In August 1997, sixteen adult (eight males and eight females) and seven immature (four males and three females) nematodes were recovered from one specimen of the rattlesnake Crotalus durissus Linnaeus, 1758 found dead in the area of the Itaipu Binacional Reserve, Foz do Iguaçu, State of Paraná, Brazil. Nematodes were fixed in hot 70º GL ethanol and processed for study as described elsewhere (PINTO et al. 2001). Measurements are in millimeters, unless otherwise indicated, with means in parenthesis. "En face" jelly mounts were obtained in accordance with ANDERSON (1958). Figures were made with the aid of a drawing tube connected to a Olympus microscope. Type and voucher specimens were deposited in the Helminthological Collection of the Oswaldo Cruz Institute (CHIOC), preserved as whole mounts or as wet material.