Molecular detection of Hepatozoon spp. and Cytauxzoon felis in wild carnivorans and domestic dogs in southern Pantanal wetlands of Brazil with new host records

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports Pub Date : 2025-03-10 DOI:10.1016/j.vprsr.2025.101233

Mario H. Alves , Nathana B. Martins , Aline S. Hora , Grazielle Soresini , Arnaud L.J. Desbiez , Jairo Alfonso Mendoza-Roldan , Domenico Otranto , Fernando Paiva

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Abstract

In this study, we investigated the occurrence of Hepatozoon spp. and Cytauxzoon felis in spleen samples from 26 wild carnivorans and blood samples from 28 semi-domiciled dogs collected in the Pantanal biome of Brazil. Partial 18S rRNA gene sequences of Hepatozoon spp. were detected in 15 (57.7 %) wild carnivorans and 3 (10.7 %) domestic dogs. A sequence obtained from a domestic dog was similar (99.04 %) to that of Hepatozoon canis from a crab-eating fox (Cerdocyon thous) in the same area of Brazil. Moreover, we report the neotropical otter (Lontra longicaudis) and the bush dog (Speothos venaticus) as new hosts for Hepatozoon spp. in free-ranging conditions. Additionally, C. felis was detected in two jaguars (Panthera onca), confirming the occurrence of this protozoan within this felid species, which could play a role in the maintenance of C. felis under natural conditions. Considering the above results, large-scale surveys are recommended to further assess the distribution of vector-borne pathogens and evaluate their virulence and zoonotic potential in wild carnivorans from the Pantanal.

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巴西南部潘塔纳尔湿地野生食肉动物和家狗中肝虫和猫胞虫的分子检测及新宿主记录

本研究对采集于巴西潘塔纳尔生物群系的26只野生食肉动物脾脏样本和28只半定居犬的血液样本进行了肝虫和猫细胞虫的调查。在15只野生食肉动物（57.7%）和3只家养狗（10.7%）中检测到肝虫属的部分18S rRNA基因序列。从一只家犬身上获得的序列与从巴西同一地区的食蟹狐（Cerdocyon thousand）身上获得的犬肝虫（Hepatozoon canis）相似（99.04%）。此外，我们还报道了新热带水獭（Lontra longicaudis）和丛林犬（Speothos venaticus）在自由放养条件下作为肝动物的新宿主。此外，在2只美洲虎（Panthera onca）体内检测到猫科动物，证实了该原生动物在该猫科物种中存在，可能在自然条件下猫科动物的维持中发挥作用。考虑到上述结果，建议开展大规模调查，以进一步评估潘塔纳尔野生食肉动物媒介传播病原体的分布，并评估其毒力和人畜共患的潜力。

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来源期刊

Veterinary parasitology, regional studies and reports Multiple-

CiteScore

2.90

自引率

7.10%

发文量

126

审稿时长

97 days

期刊介绍： Veterinary Parasitology: Regional Studies and Reports focuses on aspects of veterinary parasitology that are of regional concern, which is especially important in this era of climate change and the rapid and often unconstrained travel of people and animals. Relative to regions, this journal will accept papers of the highest quality dealing with all aspects of disease prevention, pathology, treatment, epidemiology, and control of parasites within the field of veterinary medicine. Also, case reports will be considered as they add to information related to local disease and its control; such papers must be concise and represent appropriate medical intervention. Papers on veterinary parasitology from wildlife species are acceptable, but only if they relate to the practice of veterinary medicine. Studies on vector-borne bacterial and viral agents are suitable, but only if the paper deals with vector transmission of these organisms to domesticated animals. Studies dealing with parasite control by means of natural products, both in vivo and in vitro, are more suited for one of the many journals that now specialize in papers of this type. However, due to the regional nature of much of this research, submissions may be considered based upon a case being made by the author(s) to the Editor. Circumstances relating to animal experimentation must meet the International Guiding Principles for Biomedical Research Involving Animals as issued by the Council for International Organizations of Medical Sciences (obtainable from: Executive Secretary C.I.O.M.S., c/o W.H.O., Via Appia, CH-1211 Geneva 27, Switzerland).