New record of Haplometroides intercaecalis (Digenea, Plagiorchiidae) infecting a Brazilian snake

Three valid species of Haplometroides Odhner, 1910 parasitise snakes and amphisbaenians from South America. This study provides additional data on morphometric and molecular phylogenetic position inferred from the nuclear ribosomal gene 28S (partial). DNA sequences were isolated from Haplometroides intercaecalis Silva, Ferreira and Strüssmann, 2007 found in one specimen of Phalotris matogrossensis Lema, D'Agostini and Cappellari, 2005. Five digenean specimens were recovered from the esophagus of this snake, and four specimens were used for morphometrical studies and one specimen for molecular analysis. Phylogenetic analysis using maximum likelihood and Bayesian methods was conducted with sequences available for the order Plagiorchiida and its phylogenetic position places H. intercaecalis among the brachycoeliids Brachycoelium (Dujardin, 1845) Stiles and Hassall, 1898 and Parabrachycoelium Pérez-Ponce de León, Mendoza-Garfias, Razo-Mendivil and Parra-Olea, 2011, and the mesocoeliid Mesocoelium Odhner, 1910, not closely related to plagiorchids as expected. Due to morphological differences among these families, it may be necessary to create a new family to accommodate Haplometroides spp. However, more genera/taxa as well as other molecular markers should be added in future studies to confirm our results and resolve this matter. This is the first phylogenetic positioning of digeneans of the genus Haplometroides, contributing to the systematic analysis of the helminthological biodiversity of Neotropical snakes.

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Molecular phylogenetic position of Haplometroides intercaecalis (Digenea, Plagiorchiidae)

Müller

Morais

Silva

2018

Acta Parasitologica

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Helminths infecting Dryadosaura nordestina (Squamata: Gymnophthalmidae) from Atlantic Forest, northeastern Brazil

et al. 2018

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SummaryWe analyzed the patterns of infection by helminths in populations of the Gymnophthalmidae lizard Dryadosaura nordestina from three Atlantic Forest fragments in Northeast Brazil. Prevalence and mean intensity of infection by location showed the following results: ARIE Mata de Goiamunduba (60.8 % and 10.4 ± 8), RPPN Engenho Gargaú (83.3 % and 20.8 ± 19.7) and Benjamim Maranhão Botanical Garden (70.4 % and 7.78 ± 5.8). We provide the first records of helminth infection for the lizard D. nordestina, in which three species of nematodes, Aplectana sp., Cosmocerca sp. and Physaloptera lutzi and one trematode Haplometroides odhneri were recovered. Trematodes of the genus Haplometroides were previously known as parasites only in snake and amphisbaenian hosts in South America. Now, our study provides the first record of a species belonging to this genus parasitizing lizards. In conclusion, our study shows that D. nordestina have a depleted helminth fauna (three species at maximum), similar to other studies with lizards of this family in Brazil and that its parasite abundance is related to host snout-vent length, but not to the sex.

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Parasitismo em serpentes

et al. 2020

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A criação cativa de serpentes tem sido cada vez mais intensificada devido ao seu uso como pet, conservação de animais selvagens, importância em pesquisas, desenvolvimento tecnológico, produção de soro antipeçonha e outros produtos. O parasitismo nestes animais é frequente, podendo atingir alta carga parasitária, a qual pode ser intensificada com o estresse de cativeiro que leva à depressão do sistema imunológico. Os parasitos não apenas influenciam na viabilidade dos animais mantidos em cativeiro, como também podem ter potencial zoonótico. Esta revisão visa auxiliar profissionais da área na manutenção adequada de serpentes em cativeiro.

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New record of Haplometroides intercaecalis (Digenea, Plagiorchiidae) infecting a Brazilian snake

Cited by 3 publications

References 1 publication

Molecular phylogenetic position of Haplometroides intercaecalis (Digenea, Plagiorchiidae)

Molecular phylogenetic position of Haplometroides intercaecalis (Digenea, Plagiorchiidae)

Helminths infecting Dryadosaura nordestina (Squamata: Gymnophthalmidae) from Atlantic Forest, northeastern Brazil

Parasitismo em serpentes

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