ArticleParasitology research2023
Expanding the universe of Piroplasmids: morphological detection and phylogenetic positioning of putative novel piroplasmids in black-eared opossums (Didelphis aurita) from southeastern Brazil, with description of "South American Marsupialia Group" of Piroplasmida.
Article in Parasitology research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 12 citations in OpenAlex.
- Molecular detection and phylogenetic characterization of Babesia and Ehrlichia in free-living opossums from southeastern Brazil.Acta parasitologica · 2026Article
- Identification and phylogenetic analysis of novel Piroplasmida detected in the two-toed sloth (Choloepus didactylus).The Journal of veterinary medical science · 2025Article
- Survey of Piroplasmids in Wild Mammals, Unconventional Pets, and Ticks from Goiás State, Midwestern Brazil.Pathogens (Basel, Switzerland) · 2025Article
- Using Digital PCR to Unravel the Occurrence of Piroplasmids,Pathogens (Basel, Switzerland) · 2025Article
- Molecular survey of Hepatozoon spp. and piroplasmids in rodents and marsupials from midwestern Brazil, with evidence of a novel Piroplasmida clade ("South American Rodentia") in the echimyid rodent Thrichomys pachyurus.Parasitology research · 2025Article
- A novel genotype of Babesia microti-like group in Ixodes montoyanus ticks parasitizing the Andean bear (Tremarctos ornatus) in Ecuador.Experimental & applied acarology · 2025Article
- Molecular survey of Bartonella spp., Ehrlichia spp., Anaplasma spp. and hemoplasmas in small synanthropic mammals in urban areas of Brazil's northern Amazon region.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2025Article
- Diversity of piroplasmids in wild animals in Brazil: a review.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2025Review
- Tick-borne Apicomplexa in wildlife and ticks of French Guiana.Parasite (Paris, France) · 2024Article
- Phylogenetic Inferences Based on Distinct Molecular Markers Confirm a NovelMicroorganisms · 2023Article
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13 authors at 3 institutions in 1 country.
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Abstract
The growing proximity of wildlife to large urban niches arouses greater interest in understanding wild reservoirs in the epidemiology of diseases of importance to animal and human health. The aim of the present study was to investigate the presence of piroplasmids in opossums rescued from the metropolitan region of Rio de Janeiro state, Brazil. Blood and bone marrow samples were collected from 15 Didelphis aurita and subjected to DNA extraction and PCR using primers for the 18S rRNA, cox1, cox3, and hsp70 genes of piroplasmids. Clinical and hematological evaluation of the animals was also performed. Five (33.3%) of the 15 opossums tested positive for piroplasms in the nested PCR based on the 18S rRNA, and in two animals, it was possible to observe intra-erythrocytic structures compatible with merozoites. One of the positive animals showed clinical signs of infection such as jaundice, fever, and apathy. Anemia, low level of plasma protein, leukocytosis, and regenerative erythrocyte signs were observed in positive animals. Phylogenetic analysis based on both 18S rRNA and cox-3 genes demonstrated that the piroplasmids detected in D. aurita formed a unique sub-clade, albeit related to piroplasmids previously detected in Didelphis albiventris and associated ticks from Brazil. This study proposes the novel Piroplasmida Clade, namely "South American Marsupialia Group," and reinforces the need for new clinical-epidemiological surveys to understand the dynamics of these infections in didelphids in Brazil.
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