Tropidurus hispidus Spix 1825 (Sauria, Tropiduridae): a new host for Oswaldofilaria petersi Bain &amp; Sulahian 1974 (Nematoda, Onchocercidae)

Silva, R.J.; Kohlsdorf, Tiana

doi:10.1590/s0102-09352003000300022

Cited by 9 publications

(6 citation statements)

References 3 publications

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“…Regarding all the T. hispidus populations that have been studied (Prieto, 1980; Silva & Kohlsdorf, 2003; Ávila et al , 2012; Pereira et al , 2012), the highest prevalence of parasites was found in the present study. However, the highest richness was reported by Ávila et al (2012), and this could be related to a greater number of localities sampled within the Caatinga biome, thus leading to an effect of species × area relationship (Poulin & Morand, 2004).…”

Section: Discussionsupporting

confidence: 46%

“…In spite of its wide distribution throughout several biomes, knowledge on parasitic fauna associated with this host species is patchy and has been reported for only a few localities along its range of distribution. The parasites so far reported infecting T. hispidus are Physaloptera retusa (Rudolphi 1819) in a host population from Venezuela (Prieto, 1980) and Oswaldofilaria petersi Bain and Sulahian 1974 (Silva & Kohlsdorf, 2003), Parapharyngodon sceleratus (Travassos 1923) (Lopes et al , 2009) and the pentastomid Raillietiella mottae Almeida, Freire and Lopes 2008 (Almeida et al , 2008) in specimens from Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Gastrointestinal nematodes of the lizardTropidurus hispidus(Squamata: Tropiduridae) from a semi-arid region of north-eastern Brazil

et al. 2012

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The tropidurid lizard Tropidurus hispidus has a wide distribution in South America. However, knowledge about its helminth fauna is patchy and has been reported for only a few localities along its range of distribution. This study presents data on helminth fauna composition and parameters of infection for a population of T. hispidus from an area within the Brazilian Caatinga biome (semi-arid physiognomy). We found five nematode species within the gastrointestinal tract of lizards: Parapharyngodon sceleratus (Pharyngodonidae); Physaloptera lutzi, Physaloptera retusa and Physalopteroides venancioi (Physalopteridae); and Strongyluris oscari (Heterakidae). The overall prevalence was 84.2% and the mean intensity of infection was 8.5 ± 1.1. The body size of adult male lizards influenced positively the intensity of infection. The infracommunities of nematodes presented an intermediate aggregated distribution (discrepancy index; D= 0.519) and a depauperate nematode fauna. The presence of generalist parasite species has contributed to an increase in the overall richness of the component community. This sampled host population presented the highest prevalence of parasites compared with other studies on T. hispidus, but their relatively low richness can be related to the disturbed environment of the study area.

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Section: Discussionsupporting

confidence: 46%

Section: Introductionmentioning

confidence: 99%

Gastrointestinal nematodes of the lizardTropidurus hispidus(Squamata: Tropiduridae) from a semi-arid region of north-eastern Brazil

et al. 2012

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“…This is reinforced when further reports are referred to. To take a recent example, the host range and geographic distribution of two species that were originally found in the amazonian region of Belem, Para, Brazil, have been extended: O. azevedoi described from Polychrus marmoratus (Polychrotidae) was reported from a tropidurid, Plica umbra Linnaeus, 1758, in the western part of the amazonian basin in Peru, at reserva Cuzco amazonica (Bursey et al, 2005); O. petersi, described from the teiid Tupinambis teguixin, was reported in Tropidurus hispidus Spix, 1825 in Bahia, Brazil (Silva & Kohlsdorf, 2003), but in this case the identification seems doubtful, because the typical numerous precloacal, aligned papillae are not figured and a gubernaculum is reported.…”

Section: Discussionmentioning

confidence: 99%

“…The present finding contrasts with the picture resulting from the rather numerous surveys of oswaldofilarine species parasitising lizards that were conducted in South america. all materials observed during the past thirty years in Brazil (Vicente, 1981;Vicente et al, 1993;Silva & Kohlsdorf, 2003), Paraguay (Bursey & Goldberg, 2004) and Peru (Bursey et al, 2005) were assigned to known species. Furthermore, in the neotropical region, the most recent description was that of a parasite from a crocodylid (marinkelle, 1981 (SVL 75.74 ± 13.62; range 42.1 -101.4 mm) were trapped.…”

Section: Introductionmentioning

confidence: 99%

Oswaldofilaria chabaudin. sp. (Nematoda: Onchocercidae) from a South American tropidurid lizard (Squamata: Iguania) with an update on Oswaldofilariinae

Pereira

Lima

Bain³

2010

Parasite

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Summary:A new species of Oswaldofilaria is described from Tropidurus torquatus (Tropiduridae: Iguania); its prevalence at the rocky study area at Juiz de Fora, Minas Gerais, Brazil, was approximately 30 % and its mean intensity 3.13 ± 2.51. Oswaldofilaria chabaudi n. sp. is distinct from the thirteen Oswaldofilaria species known in Australia, Africa and South-America in having the following characteristics: oesophagus medium-sized, left spicule 1 mm long and high spicular ratio (about 5), tail extremity ornated in both sexes with a bifurcated projection, and tooth-like structures near phasmids in the female. A long left spicule and high spicular ratio are convergent derived characters also found in a parasite of Australian crocodilians, O. kanbaya, and in several species of the closely related genus Befilaria, such as the Central American B. puertoricensis from polychrotids. Oswaldofilaria in South America is represented by eight species. Within these, a primitive group that is parasitic in Iguanidae, Polychrotidae (Iguania) and Crocodylidae and that possesses a long oesophagus is recognised, together with two distinct derived lines: three species with numerous, aligned precloacal papillae, parasitic in Teiidae (Laterata) and Scincidae (Scincomorpha), and O. chabaudi n. sp., in which this character is absent. Tropidurids (Tropiduris and Plica) had previously been reported in the host range of two oswaldofilarine genera, Oswaldofilaria and Piratuba, and their parasites assigned to known species described from other groups of lizards.

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“…Although the Caatinga is one of the largest semi-arid domains in the world, only relatively recently have researchers started to understand the helminth fauna of its lizards (e.g. Silva & Kohlsdorf, 2003; Almeida et al , 2009; Anjos et al , 2011; Ávila et al , 2012; Brito et al , 2014). The flat lizard, Tropidurus semitaeniatus , occurs in patches of rocky habitat within the matrix of the semi-arid Caatinga formation in Brazil (Carvalho et al , 2013).…”

Section: Introductionmentioning

confidence: 99%

Levels of helminth infection in the flat lizard Tropidurus semitaeniatus from north-eastern Brazil

et al. 2015

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Parasites represent a great, unknown component of animal biodiversity. Recent efforts have begun to uncover patterns of infection by helminth parasites in several Neotropical lizards. The present study reports, for the first time, levels of helminth infection in a population of the flat lizard Tropidurus semitaeniatus. One hundred and thirty-nine lizards were examined and evidence of five intestinal helminth species was found, comprising four species of nematodes, one species of cestode and an unidentified encysted larval nematode. The most frequently occurring species was the intestinal nematode Parapharyngodon alvarengai, which did not exhibit differences in prevalence and intensity of infection relative to host sex or age/body size. Furthermore, helminth species richness was not related to host body size.

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Tropidurus hispidus Spix 1825 (Sauria, Tropiduridae): a new host for Oswaldofilaria petersi Bain & Sulahian 1974 (Nematoda, Onchocercidae)

Cited by 9 publications

References 3 publications

Gastrointestinal nematodes of the lizardTropidurus hispidus(Squamata: Tropiduridae) from a semi-arid region of north-eastern Brazil

Gastrointestinal nematodes of the lizardTropidurus hispidus(Squamata: Tropiduridae) from a semi-arid region of north-eastern Brazil

Oswaldofilaria chabaudin. sp. (Nematoda: Onchocercidae) from a South American tropidurid lizard (Squamata: Iguania) with an update on Oswaldofilariinae

Levels of helminth infection in the flat lizard Tropidurus semitaeniatus from north-eastern Brazil

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