Monitoring Wildlife Health: Surveillance and Management of Infectious Diseases

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Veterinary Microbiology, Parasitology and Immunology".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 4625

Special Issue Editors


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Guest Editor
Institute of Veterinary Medicine of Serbia, Janisa Janulisa 14, 11000 Belgrade, Serbia
Interests: veterinary pathology; zoonotic infectious diseases

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Guest Editor
Institute for the Application of Nuclear Energy—INEP, University of Belgrade, Banatska 31b, 11080 Zemun-Belgrade, Serbia
Interests: veterinary virology and immunology; vector-borne diseases and zoonoses

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Guest Editor
Department of Pathology, University of Sarajevo—Veterinary Faculty, 71000 Sarajevo, Bosnia and Herzegovina
Interests: veterinary pathology

Special Issue Information

Dear Colleagues,

Monitoring the health of wildlife is crucial as the expansion of human activities into natural habitats heightens the risk of zoonotic diseases. The movement of wildlife across borders has led to transboundary diseases becoming a primary concern for both animals and humans. While populations of certain species are growing, little is known about the pathogens they carry, some of which can pose risks to humans. However, wildlife can also provide valuable information that informs decision-making and guides preventive measures and disease control efforts. The surveillance and management of infectious diseases in wildlife are critical for safeguarding biodiversity, human health, and domestic animal populations. This Special Issue highlights the growing recognition of wildlife disease monitoring as a frontline defense against emerging zoonoses, exemplified by lessons from the SARS-CoV-2 pandemic, which underscored the interconnectedness of human, animal, and environmental health. Effective surveillance requires standardized methodologies, such as passive mortality reporting, hunter–harvest sampling, and non-invasive techniques (e.g., environmental DNA), to detect pathogens and assess the prevalence of disease. However, challenges persist due to ecological complexities, including fluctuations in host population dynamics and disease prevalence, which can bias surveillance outcomes and undermine risk assessments. Innovative approaches, such as agent-based modeling, have emerged to address sampling biases and optimize surveillance strategies, as demonstrated in the monitoring of chronic wasting disease in white-tailed deer. Case studies on sarcoptic mange in Alpine chamois and tuberculosis in wild boar further illustrate the importance of integrating epidemiological research into adaptive management. This Special Issue therefore advocates for national and international frameworks that harmonize wildlife health surveillance with One Health initiatives, emphasizing early detection, cross-sector collaboration, and capacity-building to mitigate the threat posed by endemic and emerging pathogens.

Dr. Branislav Kureljušić
Dr. Diana Lupulović
Dr. Amer Alić
Guest Editors

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Keywords

  • wildlife disease surveillance 
  • zoonotic diseases 
  • emerging infectious diseases 
  • non-invasive sampling 
  • population fluctuations 
  • one Health approach 
  • chronic wasting disease 
  • biodiversity conservation 
  • pathogen detection 
  • surveillance frameworks

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Published Papers (4 papers)

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Research

12 pages, 2110 KiB  
Article
Gut Microbiota Dynamics in Hibernating and Active Nyctalus noctula: Hibernation-Associated Loss of Diversity and Anaerobe Enrichment
by Ilia V. Popov, Daria A. Peshkova, Ekaterina A. Lukbanova, Inna S. Tsurkova, Sergey A. Emelyantsev, Anastasya A. Krikunova, Aleksey V. Malinovkin, Michael L. Chikindas, Alexey M. Ermakov and Igor V. Popov
Vet. Sci. 2025, 12(6), 559; https://doi.org/10.3390/vetsci12060559 - 6 Jun 2025
Viewed by 494
Abstract
Hibernation in mammals entails profound physiological changes that are known to impact host-associated microbial communities, yet its effects on the gut microbiota of synanthropic bats remain underexplored. In this study, we investigated the gut bacterial composition and diversity of Nyctalus noctula before and [...] Read more.
Hibernation in mammals entails profound physiological changes that are known to impact host-associated microbial communities, yet its effects on the gut microbiota of synanthropic bats remain underexplored. In this study, we investigated the gut bacterial composition and diversity of Nyctalus noctula before and during hibernation using high-throughput 16S rRNA amplicon sequencing. Fecal samples from individually banded bats were collected under controlled conditions at a rehabilitation center and analyzed for alpha and beta diversity, as well as differential taxonomic abundance. Hibernation was associated with a marked reduction in microbial diversity according to the Shannon and Simpson indices and a distinct restructuring of gut communities based on the Bray–Curtis dissimilarity index. Active bats exhibited a diverse microbiota enriched in facultative anaerobes, including Lactococcus, Enterococcus, and EscherichiaShigella, while hibernating individuals were dominated by obligate anaerobes, such as Romboutsia and Paeniclostridium. These findings suggest a contraction and functional specialization of the gut microbiota during torpor, potentially reflecting adaptations to fasting, hypothermia, and reduced gut motility. Our results demonstrate that the bat’s gut microbiome is highly responsive to physiological status and underscore the importance of microbial ecology for understanding the host’s energy balance and health under seasonal contexts. Full article
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13 pages, 503 KiB  
Article
Exploring Antimicrobial Resistance in Bacteria from Fecal Samples of Insectivorous Bats: A Preliminary Study
by Santina Di Bella, Delia Gambino, Maria Foti, Bianca Maria Orlandella, Vittorio Fisichella, Francesca Gucciardi, Francesco Mira, Rosario Grasso, Maria Teresa Spena, Giuseppa Purpari and Annalisa Guercio
Vet. Sci. 2025, 12(6), 516; https://doi.org/10.3390/vetsci12060516 - 25 May 2025
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Abstract
Bats (order Chiroptera) are increasingly recognized as important reservoirs and potential vectors of pathogenic and antimicrobial-resistant bacteria (ARB), with potential implications for human, animal, and environmental health. This study aimed to assess the presence and antimicrobial resistance profiles of bacterial isolates from bat [...] Read more.
Bats (order Chiroptera) are increasingly recognized as important reservoirs and potential vectors of pathogenic and antimicrobial-resistant bacteria (ARB), with potential implications for human, animal, and environmental health. This study aimed to assess the presence and antimicrobial resistance profiles of bacterial isolates from bat populations in Sicily, an area for which data are currently limited. A total of 132 samples (120 rectal swabs and 12 guano samples) were collected at four sites in the provinces of Catania, Siracusa, and Ragusa. Bacteriological analysis yielded 213 isolates, including 161 Gram-negative and 52 Gram-positive strains, representing 55 different species. Among Gram-negative isolates, Escherichia coli, Citrobacter freundii, and Morganella morganii were most frequently detected, while Bacillus licheniformis and Staphylococcus xylosus were predominant among Gram-positive bacteria. Antimicrobial susceptibility testing revealed high resistance rates to colistin, amoxicillin, and ampicillin in Gram-negative strains, and to oxacillin, ceftazidime, and lincomycin in Gram-positive strains. Notably, 84.5% of isolates exhibited multidrug resistance. These findings highlight the potential role of bats as reservoirs of ARB and underline the importance of ongoing monitoring within a One Health framework to mitigate risks to public and animal health. Full article
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17 pages, 1777 KiB  
Article
Genetic Diversity of Canine Circovirus Detected in Wild Carnivores in Serbia
by Damir Benković, Jakov Nišavić, Nenad Milić, Dejan Krnjaić, Isidora Prošić, Vladimir Gajdov, Nataša Stević, Ratko Sukara, Martina Balać and Andrea Radalj
Vet. Sci. 2025, 12(6), 515; https://doi.org/10.3390/vetsci12060515 - 24 May 2025
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Abstract
Canine circovirus (CanineCV) is an emerging virus of interest in both domestic and wild carnivores that is scarcely reported in southeastern Europe. This study examined the presence, genetic diversity, and evolutionary characteristics of CanineCV in red foxes (Vulpes vulpes) and golden [...] Read more.
Canine circovirus (CanineCV) is an emerging virus of interest in both domestic and wild carnivores that is scarcely reported in southeastern Europe. This study examined the presence, genetic diversity, and evolutionary characteristics of CanineCV in red foxes (Vulpes vulpes) and golden jackals (Canis aureus) from northwestern Serbia, a region marked by expanding mesopredator populations overlapping with human habitats. Out of 98 sampled animals, circoviral DNA was detected in 31.6%. Jackals were mostly positive for CanineCV genotype 4, while genotype 5, associated with wild carnivores, was dominant in foxes. Mixed genotype 4/genotype 5 infections were only found in jackals. Phylogenetic and haplotype analyses indicated that most jackal-derived CanineCV strains clustered along sequences from Europe, Africa, and the Americas, while genotype 5 sequences grouped separately from other genotype representatives. A recombinant strain was identified as a divergent lineage, and several sequences showed evidence of recombination between Rep and Cap genes. Despite Cap protein amino acid differences, purifying selection dominated, suggesting functional constraints on viral evolution. The results indicate that jackals may act as recombination hotspots and bridging hosts between viral lineages. This study provides insight into the molecular epidemiology of CanineCV in the Balkans, highlighting the importance of ongoing surveillance. Full article
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20 pages, 18295 KiB  
Article
Metagenomic Insights into the Diverse Antibiotic Resistome of Non-Migratory Corvidae Species on the Qinghai–Tibetan Plateau
by You Wang, Quanchao Cui, Yuliang Hou, Shunfu He, Wenxin Zhao, Zhuoma Lancuo, Kirill Sharshov and Wen Wang
Vet. Sci. 2025, 12(4), 297; https://doi.org/10.3390/vetsci12040297 - 23 Mar 2025
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Abstract
Antibiotic resistance represents a global health crisis with far-reaching implications, impacting multiple domains concurrently, including human health, animal health, and the natural environment. Wild birds were identified as carriers and disseminators of antibiotic-resistant bacteria (ARB) and their associated antibiotic resistance genes (ARGs). A [...] Read more.
Antibiotic resistance represents a global health crisis with far-reaching implications, impacting multiple domains concurrently, including human health, animal health, and the natural environment. Wild birds were identified as carriers and disseminators of antibiotic-resistant bacteria (ARB) and their associated antibiotic resistance genes (ARGs). A majority of studies in this area have concentrated on migratory birds as carriers for the spread of antibiotic resistance over long distances. However, there has been scant research on the resistome of non-migratory Corvidae species that heavily overlap with human activities, which limits our understanding of antibiotic resistance in these birds and hinders the development of effective management strategies. This study employed a metagenomics approach to examine the characteristics of ARGs and mobile genetic elements (MGEs) in five common Corvidae species inhabiting the Qinghai–Tibetan Plateau. The ARGs were classified into 20 major types and 567 subtypes. Notably, ARGs associated with multidrug resistance, including to macrolide–lincosamide–streptogramins, tetracyclines, beta-lactam, and bacitracin, were particularly abundant, with the subtypes acrB, bacA, macB, class C beta-lactamase, and tetA being especially prevalent. A total of 5 types of MGEs (166 subtypes) were identified across five groups of crows, and transposase genes, which indicated the presence of transposons, were identified as the most abundant type of MGEs. Moreover, some common opportunistic pathogens were identified as potential hosts for these ARGs and MGEs. Procrustes analysis and co-occurrence network analysis showed that the composition of the gut microbiota shaped the ARGs and MGEs, indicating a substantial association between these factors. The primary resistance mechanisms of ARGs in crows were identified as multidrug efflux pumps, alteration of antibiotic targets, and enzymatic inactivation. High-risk ARGs which were found to potentially pose significant risks to public health were also analyzed and resulted in the identification of 81 Rank I and 47 Rank II ARGs. Overall, our study offers a comprehensive characterization of the resistome in wild Corvidae species, enhancing our understanding of the potential public health risks associated with these birds. Full article
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