Tick-borne pathogens in dogs, wild small mammals and their ectoparasites in the semi-arid Caatinga biome, northeastern Brazil

Oliveira, Glauber Meneses Barboza de; Silva, Ivo Wesley Gomes da; Evaristo, Anna Maria da Cruz Ferreira; Serpa, Maria Carolina de Azevedo; Campos, Amanda Noeli Silva; Dutra, Valéria; Nakazato, Luciano; Aguiar, Daniel Moura de; Labruna, Marcelo Bahia; Horta, Maurício Cláudio

doi:10.1016/j.ttbdis.2020.101409

Cited by 25 publications

(25 citation statements)

References 45 publications

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“…Considering the exposure to R. amblyommatis among the dogs studied here, it can be suggested that ticks of the genus Amblyomma were present in Vila de Jericoacoara. Furthermore, C. felis felis fleas were previously found to be infected with R. felis in Ceará (Oliveira et al, 2020). However, the dogs tested in the present study did not show titers that would correspond to exposure to the species R. felis, although C. felis felis fleas were found on three animals.…”

Section: Discussioncontrasting

confidence: 71%

“…Although these pathogens had previously been reported infecting dogs in other states in Brazil (Saito et al, 2008;Ramos et al, 2010;Spolidorio et al, 2011;Vieira et al, 2011;Costa et al, 2015; Tick-borne pathogens in dogs in Ceará, Brazil Miranda et al, 2014;Rotondano et al, 2015Rotondano et al, , 2017Lopes et al, 2019;Oliveira et al, 2020), data relating to Ceará were very scarce, and were mainly from the coastal region. Recently, R. rickettsii, R. amblyommatis and E. canis were reported infecting dogs in the National Forest (FLONA) of Araripe-Apodi, in the municipality of Crato, state of Ceará (Oliveira et al, 2020). However, there had not been any previous reports of H. canis and B. vogeli in dogs in this state.…”

Section: Discussionmentioning

confidence: 99%

“…According to these authors, environmental factors such as the semiarid climate and the typical xeric forest of the Caatinga biome may have had an association with the absence of tick vectors of the genus Amblyomma in the study region. On the other hand, Oliveira et al (2020) proved that dogs in the FLONA of Araripe-Apodi were infested with R. sanguineus s.l., Amblyomma parvum and C. felis felis; and that specimens of A. parvum and C. felis felis were infected with Rickettsia spp. Parasitism by other tick species in dogs in Vila de Jericoacoara should not be ruled out, given the presence of anti-R. amblyommatis antibodies in the animals studied.…”

Section: Discussionmentioning

confidence: 99%

“…Rickettsia amblyommatis has been reported infecting Amblyomma auricularium, A. parvum (Saraiva et al, 2013;Lugarini et al, 2015;Oliveira et al, 2020), Amblyomma longirostre (Ogrzewalska et al, 2011;Lugarini et al, 2015;McIntosh et al, 2015), Amblyomma cajennense sensu stricto (ss) (Costa et al, 2017), Amblyomma pseudoconcolor (Silva et al, 2018) and Amblyomma varium (Lugarini et al, 2015) in northeastern Brazil. Although the pathogenicity of R. amblyommatis to humans has not yet been proven, some cases of Rocky Mountain spotted fever in the United States may have been caused by this bacterium (Apperson et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

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Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

Fonsêca

Oliveira

Jorge

et al. 2022

Rev. Bras. Parasitol. Vet.

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The aim of this study was to determine the occurrence of tick-borne pathogens (Ehrlichia canis, Babesia vogeli, Hepatozoon spp. and Rickettsia spp.) in dogs in Vila de Jericoacoara, coastal region of Ceará, Brazil. Blood samples were collected from 153 animals and analyzed using molecular and serological methods. Sixty animals were found to be infected or exposed to at least one of the pathogens studied. Babesia vogeli was the most prevalent pathogen (15%), followed by E. canis (13.7%) and Hepatozoon spp. (11.8%), which was identified as Hepatozoon canis through sequencing. Twenty dogs (13%) were seroreactive to Rickettsia spp. Rhipicephalus sanguineus sensu lato was observed on 11.8% of the animals. There were associations between age (< 3 years old) and positivity for B. vogeli, and between habitation (stray dogs) and positivity for H. canis. There were also associations between anemia and infection with H. canis, and between leukopenia and exposure to Rickettsia spp. No association was detected between clinical alterations and infection with or exposure to the pathogens studied. The results confirmed that pathogens of veterinary importance are circulating in northeastern Brazil and showed that dogs are exposed to Rickettsia species with zoonotic potential, thus indicating a need for vector control measures.

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Section: Discussioncontrasting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

Fonsêca

Oliveira

Jorge

et al. 2022

Rev. Bras. Parasitol. Vet.

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“…Rosicky, 1957; Dudich, 1989, 1992, 1995). On the other hand, possible losses of fleas from dead host individuals [in comparison with amount of fleas collected from live animals (Krasnov et al ., 1998; de Oliveira et al ., 2020 a.o.)] are compensated by a large amount of evaluated material (see below).…”

Section: Methodsmentioning

confidence: 99%

Diversity, distribution and changes in communities of fleas on small mammals along the elevational gradient from the Pannonian Plain to the Carpathian Mountains

et al. 2020

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The causal chain of parasite–host–environment interactions, the so-called ‘dual parasite environment’, makes studying parasites more complicated than other wild organisms. A sample of 65 282 fleas taken from 336 different locations were analysed for changes in the distribution, diversity and compensation of flea communities found on small mammals along an elevational diversity gradient ranging from the Pannonian Plain to the base of the Carpathian summits. The fleas were divided into four groups, which were derived from changes in abundance and occurrence determined from cluster analysis. They are (1) flea species whose range seems unrelated to any change in elevation; (2) species that avoid high altitudes; (3) a group that can be subdivided into two types: (i) host-specific fleas and (ii) mountains species and (4) species opting for high altitudes on the gradient or preferring lower to middle elevations below 1000 m. Our study showed a unimodal pattern of flea diversity along the elevational gradient. It indicated that seasonality significantly conditions changes in biodiversity and patterns of spatial change along the elevational gradient, with specific flea species influenced by their host, while the impact of environmental conditions is more pronounced in opportunistic flea species.

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Tick-Borne Microorganisms in Neotropical Vertebrates

Bermúdez C.,

Zieman,

Tarragona

et al. 2024

Ecology of Wildlife Diseases in the Neotropics

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Tick-borne pathogens in dogs, wild small mammals and their ectoparasites in the semi-arid Caatinga biome, northeastern Brazil

Cited by 25 publications

References 45 publications

Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

Occurrence of tick-borne pathogens in dogs in a coastal region of the state of Ceará, northeastern Brazil

Diversity, distribution and changes in communities of fleas on small mammals along the elevational gradient from the Pannonian Plain to the Carpathian Mountains

Tick-Borne Microorganisms in Neotropical Vertebrates

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