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

Published online by Cambridge University Press:  16 October 2012

L.A. Anjos ,
R.W. Ávila ,
S.C. Ribeiro ,
W.O. Almeida  and
R.J. da Silva
L.A. Anjos*
Affiliation:
Departamento de Biologia e Zootecnia, Laboratório de Parasitologia e Zoologia, UNESP, Universidade Estadual Paulista, FEIS, Passeio Monção, 226, CEP 15 385-000, Ilha Solteira, SP, Brazil
R.W. Ávila
Affiliation:
CCBS/Depto. de Ciências Biológicas, Universidade Regional do Cariri, Campus do Pimenta, Rua Cel, Antonio Luiz, 1161, Bairro do Pimenta, 63 105-100, Crato, CE, Brazil
S.C. Ribeiro
Affiliation:
Universidade Federal da Paraíba - UFPB, PPG Ciências Biológicas (Zoologia), Cidade Universitária, Campus I, CEP 58059-900João Pessoa, PB, Brazil
W.O. Almeida
Affiliation:
CCBS/Depto. de Química Biológica, Universidade Regional do Cariri, Campus do Pimenta, CEP 63105-100, Crato, Ceará, Brazil
R.J. da Silva
Affiliation:
Departamento de Biologia e Zootecnia, Laboratório de Parasitologia e Zoologia, UNESP, Universidade Estadual Paulista, FEIS, Passeio Monção, 226, CEP 15 385-000, Ilha Solteira, SP, Brazil
*
*E-mail: [email protected]
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Abstract

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: Parapharyngodonsceleratus (Pharyngodonidae); Physalopteralutzi, Physalopteraretusa and Physalopteroidesvenancioi (Physalopteridae); and Strongylurisoscari (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.

Type
Research Papers
Information
Journal of Helminthology , Volume 87 , Issue 4 , December 2013 , pp. 443 - 449
Copyright
Copyright © Cambridge University Press 2012 

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