Hepatozoon parasites (Apicomplexa: Hepatozoidae) in fish Hoplias aimara (Characiformes, Erythrinidae) from the Eastern Amazon, Brazil

Cardoso, Wagner A; Perles, Lívia; Picelli, Amanda Maria; Correa, Jamille Karina Coelho; André, Marcos Rogério; Viana, Lúcio André

doi:10.1007/s00436-022-07462-2

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…(Adeleorina: Hepatozoidae) are apicomplexan vector-borne blood parasites with a complex life cycle [1,2]. Vertebrates serve as intermediate hosts, and hematophagous arthropods such as ticks, mites and fleas serve as both definitive hosts and vectors [3][4][5][6]. Unlike other vector-borne pathogens, Hepatozoon transmission is not achieved by arthropod blood feeding on the vertebrate host, but with the infection taking place when the intermediate host ingests the definitive host.…”

Section: Introductionmentioning

confidence: 99%

Diversity of Hepatozoon species in wild mammals and ticks in Europe

et al. 2023

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Background Hepatozoon spp. are tick-borne parasites causing subclinical to clinical disease in wild and domestic animals. Aim of this study was to determine Hepatozoon prevalence and species distribution among wild mammals and ticks in Europe. Methods Samples of wild mammals and ticks, originating from Austria, Bosnia and Herzegovina, Croatia, Belgium and the Netherlands, were tested with PCR to amplify a ~ 670-bp fragment of the small subunit ribosomal RNA gene. Results Of the 2801 mammal samples that were used for this study, 370 (13.2%) tested positive. Hepatozooncanis was detected in samples of 178 animals (3 Artiodactyla, 173 Carnivora, 1 Eulipotyphia, 1 Lagomorpha), H.martis in 125 (3 Artiodactyla, 122 Carnivora), H.sciuri in 13 (all Rodentia), Hepatozoon sp. in 47 (among which Hepatozoon sp. Vole isolate, all Rodentia) and H.ayorgbor in 4 (all Rodentia). Regarding origin, 2.9% (6/208) tested positive from Austria, 2.8% (1/36) from Bosnia and Herzegovina, 14.6% (173/1186) from Croatia and 13.9% (190/1371) from Belgium/the Netherlands. Of the 754 ticks collected, 0.0% (0/35) Hyalomma sp., 16.0% (4/25) Dermacentor spp., 0.0% (0/23) Haemaphysalis spp., 5.3% (24/50) Ixodes and 1.4% (3/221) Rhipicephalus spp. tested positive for Hepatozoon (4.2%; 32/754), most often H.canis (n = 22). Conclusions Hepatozooncanis is most present in mammals (especially in Carnivora such as gray wolves and golden jackals) and ticks, followed by H.martis, which was found merely in stone martens and pine martens. None of the rodent-associated Hepatozoon spp. were detected in the ticks, suggesting the possible implication of other arthropod species or non-vectorial routes in the transmission cycle of the hemoprotozoans in rodents. Our findings of H.canis in ticks other than R.sanguineus add to the observation that other ticks are also involved in the life cycle of Hepatozoon. Now that presence of Hepatozoon has been demonstrated in red foxes, gray wolves, mustelids and rodents from the Netherlands and/or Belgium, veterinary clinicians should be aware of the possibility of spill-over to domestic animals, such as dogs. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Diversity of Hepatozoon species in wild mammals and ticks in Europe

et al. 2023

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Detection of Hemopathogens in Chelonoidis carbonaria: Microscopic, Molecular, Hematological, and Clinical Biochemistry Aspects

Mendonça,

Fonseca,

Piedade

et al. 2023

Vector-Borne and Zoonotic Diseases

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Occurrence of Hepatozoon in Some Reptiles from Brazilian Biomes with Molecular and Morphological Characterization of Hepatozoon caimani

Clemente,

Gutierrez-Liberato,

Anjos

et al. 2023

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Amphibians and reptiles represent a considerable proportion of the vertebrate fauna in Brazil. Different blood parasitic infections have been reported in these groups, such as Haemogregarina, Hepatozoon, Trypanosoma and microfilariae. However, insufficient research on interactions between these parasites and their hosts has been carried out in some regions of the country. Samples were collected from populations of wild herpetofauna in different microhabitats throughout Brazil, totaling 111 samples of reptiles from the states of Mato Grosso and Pernambuco. We used an integrative approach, with classical microscopy, morphometry and molecular analysis, in order to identify hemoparasites present in the analyzed fauna. Genomic DNA was extracted for the PCR protocol based on the 18S ribosomal RNA gene for Hepatozoon spp. A total of 53 positives were obtained with molecular screening (47.7%), all confirmed as Hepatozoon spp. using DNA sequencing. Among positive samples, 23 slides were examined, confirming the presence of Hepatozoon spp. in 91.3% of the smears. The phylogenetic analysis performed with sequences from 43 samples resulted in a tree containing several distinct clades. Sequences were generally grouped according to the taxonomic order of the host. Co-infections with microfilariae and Trypanosoma spp. were also found in microscopy analyses. This study describes the presence of Hepatozoon caimani in a new host species (Paleosuchus palpebrosus) that can be a paratenic host in the natural environment. The existence of parasitic co-infections in alligator species underscores the significance of recognizing the impact of infections by various parasitic taxa on the host populations.

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Hepatozoon parasites (Apicomplexa: Hepatozoidae) in fish Hoplias aimara (Characiformes, Erythrinidae) from the Eastern Amazon, Brazil

Cited by 4 publications

References 27 publications

Diversity of Hepatozoon species in wild mammals and ticks in Europe

Diversity of Hepatozoon species in wild mammals and ticks in Europe

Detection of Hemopathogens in Chelonoidis carbonaria: Microscopic, Molecular, Hematological, and Clinical Biochemistry Aspects

Occurrence of Hepatozoon in Some Reptiles from Brazilian Biomes with Molecular and Morphological Characterization of Hepatozoon caimani

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