| Author | Varella, Karina | |
| Author | Vilela, Roberto do Val | |
| Author | Gentile, Rosana | |
| Author | Cardoso, Thiago dos Santos | |
| Author | Costa Neto, Sócrates Fraga da | |
| Author | Maldonado Junior, Arnaldo | |
| Access date | 2022-06-23T18:23:41Z | |
| Available date | 2022-06-23T18:23:41Z | |
| Document date | 2022 | |
| Citation | VARELLA, Karina et al. Population genetic structure and phenotypic diversity of Aspidodera raillieti (Nematoda: Heterakoidea), a parasite of Didelphini marsupials in Brazil’s South and Southeast Atlantic Forest. Parasites & Vectors, v. 15, 203, p. 1 - 19, 2022. | pt_BR |
| ISSN | 1756-3305 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/53453 | |
| Language | eng | pt_BR |
| Publisher | BMC | pt_BR |
| Rights | open access | |
| Subject in Portuguese | Estrutura genética da população | pt_BR |
| Subject in Portuguese | Diversidade fenotípica | pt_BR |
| Subject in Portuguese | Aspidodera raillieti (Nematoda: Heterakoidea) | pt_BR |
| Subject in Portuguese | Marsupiais Didelphini | pt_BR |
| Subject in Portuguese | Sul do Brasil | pt_BR |
| Subject in Portuguese | Mata Atlântica Sudeste | pt_BR |
| Title | Population genetic structure and phenotypic diversity of Aspidodera raillieti (Nematoda: Heterakoidea), a parasite of Didelphini marsupials in Brazil’s South and Southeast Atlantic Forest | pt_BR |
| Type | Article | |
| DOI | 10.1186/s13071-022-05288-6 | |
| Abstract | Background: The population genetics of parasites may be influenced by host specificity, life cycle, host geographical
range, evolutionary history, and host population structure. The nematode Aspidodera raillieti infects different marsupial
and rodent hosts in the Nearctic and Neotropical regions, implying a gene flow among populations. However, niche
diversification of the main hosts of A. raillieti in superimposed areas may provide conditions for population genetic
structuring within this parasite species. We examined the genetic structuring of A. raillieti infecting three marsupial
species co-occurring along the South and Southeast Brazilian Atlantic Forest, a hotspot of biodiversity.
Methods: We employed morphometric analyses and partial mitochondrial cytochrome c oxidase I gene sequences
(MT-CO1) to characterize populations via phylogenetic and phylogeographic analyses.
Results: Among 175 A. raillieti specimens recovered from the marsupial hosts Didelphis aurita, D. albiventris, and Philander
quica, we identified 99 MT-CO1 haplotypes forming four haplogroups and four clades in networks and phylogenetic
trees, respectively. Clades I and II encompassed parasites of D. albiventris from the South region, clade III comprised
parasites of D. aurita from the South and Southeast regions, and clade IV encompassed parasites of D. aurita
and D. albiventris from the South and Southeast regions and parasites of P. quica from the South region. High genetic
differentiation between clades, with a high fixation index and greater genetic variation in the analysis of molecular
variance (AMOVA), indicated low gene flow between clades. Haplotypes shared among host species revealed a lack
of host specificity. A significant correlation in the Mantel test suggested parasite isolation by distance, while there
was no evidence of geographical structure between populations. Negative neutrality test values for clades III and IV
suggested recent population expansion. Morphometric differentiation between A. raillieti specimens recovered from
different host species, as well as from different localities, was more evident in males. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Programa de Pós‑Graduação em Biologia Parasitária (PPGBP). Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Fiocruz Mata Atlântica. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Programa de Pós‑Graduação em Biologia Parasitária (PPGBP). Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Subject | Population genetic structure | pt_BR |
| Subject | Phenotypic diversity | pt_BR |
| Subject | Aspidodera raillieti (Nematoda: Heterakoidea) | pt_BR |
| Subject | Didelphini marsupials | pt_BR |
| Subject | Brazil’s South | pt_BR |
| Subject | Southeast Atlantic Forest | pt_BR |
| xmlui.metadata.dc.subject.ods | 10 Redução das desigualdades | |
| xmlui.metadata.dc.subject.ods | 15 Vida terrestre | |
