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In 2013, Brucella melitensis biovar 1 was recovered from the stomach contents of a scimitar-horned Oryx - SHO (Oryx dammah) aborted foetus, and from the articular fluid of a sand gazelle (Gazella marica) in a captive wildlife collection near Abu Dhabi, United Arab Emirates. Other evidence of exposure to the pathogen was collected through serological testing (Rose Bengal test) and B. melitensis-specific PCR of samples from captive wildlife kept in six different enclosures. A Multiple Locus Variable Number of Tandem Repeats (VNTR) Analysis (MLVA) using 15 markers showed that the two strains isolated in animals kept in enclosures, located 1300 m apart from each other, shared an identical genotype. The phylogenetic analysis of MLVA-15 profiles retrieved from the public database suggested that these strains belong to the African clade, clustering regionally in the UAE, Oman and Qatar. This is the first confirmed case of B. melitensis in a SHO, an African antelope extinct in the wild and warrants further investigation.
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http://dx.doi.org/10.1016/j.vetmic.2022.109360 | DOI Listing |
J Wildl Dis
September 2025
Minnesota Center for Prion Research and Outreach, University of Minnesota, 1971 Commonwealth Avenue, Saint Paul, Minnesota 55108, USA.
Effective biosecurity practices are essential for mitigating the risks of pathogen transmission in human-wildlife interactions, yet it is unclear how infection control policies are put into action by those working with wildlife. We evaluated biosecurity practices among professionals working with cervids in the US and Canada via an electronic survey conducted between March 2024 and June 2024. The objectives were to identify pathogens of concern, describe current biosecurity protocols, evaluate the appropriateness of disinfecting practices, and explore associations between biosecurity practices and factors such as profession, regional disease status, and the nature of interactions with cervids.
View Article and Find Full Text PDFRes Vet Sci
August 2025
Unidad de Farmacología y Terapéutica, Departamento de Clínicas y Hospital Veterinario, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay. Electronic address:
The antelope Addax nasomaculatus is a wild ruminant that is critically endangered and difficult to manipulate in vivo. There is limited information regarding the gastrointestinal nematode genera (GIN) present in the species and their pharmacological sensitivity to antiparasitic drugs. This study aimed to evaluate the seasonal prevalence of gastrointestinal nematode genera in the addax antelope and its relationship with in vitro sensitivity to macrocyclic lactones and imidazothiazoles in captivity.
View Article and Find Full Text PDFISME J
September 2025
School of Life Science, Shandong University, Qingdao 266237, China.
The gut microbiota is a key regulator of host energy metabolism, but its role in seasonal adaptation and evolution of bears is still unclear. Although giant pandas are considered an extraordinary member of the Ursidae family due to their specialized herbivory and low metabolic rate, there is still controversy over whether the metabolic regulation mechanism of their gut microbiota is unique. This study analyzed the seasonal dynamics of gut microbiota in giant pandas (Ailuropoda melanoleuca), Asian black bears (Ursus thibetanus), brown bears (Ursus arctos), and polar bears (Ursus maritimus), and combined with fecal microbiota transplantation (FMT) experiments, revealed the following findings.
View Article and Find Full Text PDFActa Vet Scand
September 2025
Department of Animal Sciences (DCA), Federal University of the Semi-Arid Region - UFERSA, Avenida Francisco Mota, 572, Costa e Silva, Mossoró, 59625-900, RN, Brazil.
Background: Research on cancer in wild animals provides important insights into the mechanisms of carcinogenesis. Histiocytic sarcomas comprise a rare malignant macrophage-dendritic cell lineage neoplasm in wildlife. This study reports a case of histiocytic sarcoma in the small intestine of a collared peccary (Pecari tajacu), describing its clinical, anatomopathological, and immunohistochemical aspects.
View Article and Find Full Text PDFInfect Genet Evol
August 2025
Parasitology Unit, Department of Veterinary Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand; Biomarkers in Animals Parasitology Research Unit, Chulalongkorn University, Bangkok, 10330, Thailand. Electronic address:
Gastrointestinal strongyle nematodes pose significant health risks to captive megaherbivores, including Asian elephants (Elephas maximus) and white rhinoceroses (Ceratotherium simum). Traditional diagnostic methods often fail to accurately identify species due to morphological similarities, limiting understanding of parasite diversity and host-specificity. This study is among the first in Southeast Asia to apply high-throughput internal transcribed spacer-2 (ITS-2) rDNA metabarcoding to characterize strongyle nematode communities in these endangered hosts.
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