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- Title
Morphological and molecular characterization and phylogenetic relationships of a new species of trypanosome in Tapirus terrestris (lowland tapir), Trypanosoma teixeirae sp. nov., from Atlantic Rainforest of southeastern Brazil.
- Authors
Lima Acosta, Igor da Cunha; Pereira da Costa, Andrea; Nunes, Pablo Henrique; Naegeli Gondim, Maria Fernanda; Gatti, Andressa; Rossi Jr., João Luiz; Gennari, Solange Maria; Marcili, Arlei
- Abstract
Background The Lowland tapir (Tapirus terrestris) is the largest Brazilian mammal and despite being distributed in various Brazilian biomes, it is seriously endangered in the Atlantic Rainforest. These hosts were never evaluated for the presence of Trypanosoma parasites. Methods The Lowland tapirs were captured in the Brazilian southeastern Atlantic Rainforest, Espírito Santo state. Trypanosomes were isolated by hemoculture, and the molecular phylogeny based on small subunit rDNA (SSU rDNA) and glycosomal-3-phosphate dehydrogenase (gGAPDH) gene sequences and the ultrastructural features seen via light microscopy and scanning and transmission electron microscopy are described. Results Phylogenetic trees using combined SSU rDNA and gGAPDH data sets clustered the trypanosomes of Lowland tapirs, which were highly divergent from other trypanosome species. The phylogenetic position and morphological discontinuities, mainly in epimastigote culture forms, made it possible to classify the trypanosomes from Lowland tapirs as a separate species. Conclusions The isolated trypanosomes from Tapirus terrestris are a new species, Trypanosoma teixeirae sp. n., and were positioned in a new Trypanosoma clade, named T. teixeirae clade.
- Subjects
SOUTHEAST Brazil; TRYPANOSOMA; MORPHOLOGY of protozoa; PROTOZOAN phylogeny; MOLECULAR parasitology; MAMMAL parasites; TAPIRS; RAIN forests
- Publication
Parasites & Vectors, 2013, Vol 6, Issue 1, p1
- ISSN
1756-3305
- Publication type
Article
- DOI
10.1186/1756-3305-6-349