Rickettsial Infection in Ticks from a National Park in the Cerrado Biome, Midwestern Brazil

被引：2

作者：

Paludo, Raquel Loren dos Reis ^{[1
,2
]}

Paula, Warley Vieira de Freitas ^{[1
]}

Neves, Lucianne Cardoso ^{[1
]}

de Paula, Luiza Gabriella Ferreira ^{[1
]}

de Lima, Nicolas Jalowitzki ^{[1
]}

da Silva, Bianca Barbara Fonseca ^{[1
]}

Pereira, Brenda Gomes ^{[1
]}

Padua, Gracielle Teles ^{[1
]}

Dantas-Torres, Filipe ^{[3
]}

Labruna, Marcelo B. ^{[4
]}

Martins, Thiago Fernandes ^{[4
,5
]}

Sponchiado, Jonas ^{[6
]}

Sousa-Paula, Lucas Christian de ^{[7
]}

Hannibal, Wellington ^{[8
]}

Krawczak, Felipe da Silva ^{[1
]}

机构：

[1] Univ Fed Goias UFG, Dept Med Vet, Setor Med Vet Prevent, Escola Vet & Zootecnia, BR-74690900 Goiania, Brazil

[2] Ctr Univ Mineiros UNIFIMES, BR-75833130 Mineiros, Brazil

[3] Fundacao Oswaldo Cruz Fiocruz, Dept Imunol, Inst Ageu Magalhaes IAM, BR-50740465 Recife, Brazil

[4] Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Med Vet Prevent & Saude Anim, BR-05508270 Sao Paulo, Brazil

[5] Secretaria Estado Saude Sao Paulo, Inst Pasteur, Area Tecn Doencas Vinculadas Vetores & Hospedeiros, BR-01027000 Sao Paulo, Brazil

[6] Inst Fed Educ Ciencia & Tecnol Farroupilha, Campus Alegrete, BR-97541000 Alegrete, Brazil

[7] NIAID, Tick Pathogen Transmiss Unit, Lab Bacteriol, Hamilton, MT 59840 USA

[8] Univ Estadual Goias UEG, Lab Ecol & Biogeog Mamiferos, BR-75860000 Quirinopolis, Brazil

来源：

PATHOGENS | 2024年 / 13卷 / 01期

关键词：

Amblyomma sculptum; Amblyomma triste; Rickettsia parkeri; Rickettsia tillamookensis; FEVER-ENDEMIC AREA; ATLANTIC RAIN-FOREST; FREE-LIVING TICKS; SPOTTED-FEVER; AMBLYOMMA-CAJENNENSE; SMALL MAMMALS; SAO-PAULO; ACARI IXODIDAE; STATE; ANIMALS;

D O I：

10.3390/pathogens13010013

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

This study was carried out from February 2020 to September 2021 in Parque Nacional das Emas (PNE), a national park located in the Cerrado biome, midwestern Brazil, as well as in surrounding rural properties. Serum and tick samples were collected from dogs, terrestrial small mammals, and humans. Ticks were also collected from the environment. Dogs were infested with Rhipicephalus linnaei adults, whereas small mammals were infested by immature stages of Amblyomma spp., Amblyomma triste, Amblyomma dubitatum, and Amblyomma coelebs. Ticks collected from vegetation belonged to several species of the genus Amblyomma, including A. coelebs, A. dubitatum, Amblyomma naponense, Amblyomma sculptum, and A. triste. Two Rickettsia species were molecularly detected in ticks: Rickettsia parkeri in A. triste from the vegetation and a Rickettsia sp. (designated Rickettsia sp. strain PNE) in A. sculptum and A. triste collected from lowland tapirs (Tapirus terrestris). Based on short gltA gene fragments, this rickettsial organism showed 99.7-100% to Rickettsia tillamookensis. Seroreactivity to Rickettsia antigens was detected in 21.9% of dogs, 15.4% of small mammals, and 23.5% of humans. The present study reveals the richness of ticks and demonstrates the circulation of rickettsial agents in one of the largest conservation units in the Cerrado biome in Brazil. To our knowledge, this is the first report of a rickettsial phylogenetically related to R. tillamookensis in Brazil.

引用

页数：15