We describe numerous pale plaques affecting the inguinal skin of a grey wolf (Canis lupus). Histologically, these were consistent with papillomaviral plaques. Immunohistochemistry confirmed papillomavirus antigens, and partial sequencing of the L1 gene suggests this is a novel papillomavirus most-closely related to Canis familiaris Papillomavirus 5.
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http://dx.doi.org/10.7589/2015-04-102 | DOI Listing |
PLoS One
December 2024
Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration Beijing, Beijing, China.
Understanding of predator feeding ecology, interactions among co-occurring predator species, and seasonal changes is critical for conservation management given the important role that predators play in shaping their ecosystems, but is lacking for most regions of the world. Dietary studies have demonstrated varying conclusions in the role that resource partitioning plays in the maintenance of predator communities due to complex inter-related factors that may shape prey use. We used DNA metabarcoding on 581 scat samples to determine the dietary composition, similarity, diversity, and niche overlap of eight predator species (Tibetan wolf (Canis lupus), snow leopard (Panthera uncia), Tibetan brown bear (Ursus arctos pruinosus), Eurasian lynx (Lynx lynx), Tibetan fox (Vulpes ferrilata), red fox (V.
View Article and Find Full Text PDFParasitol Res
December 2024
Animal Health Department, Faculty of Veterinary Medicine, Universidad Complutense of Madrid, Madrid, Spain.
Piroplasmids are vector-borne hemoprotozoan parasites belonging to the phylum Apicomplexa that are of veterinary and medical importance. Wild carnivores are hosts for diverse piroplasmids, some of which are highly pathogenic for domestic dogs and cats. A large-scale survey including samples from 244 individuals belonging to eleven different species that were opportunistically obtained between 1993 and 2015 in four Autonomous Regions in Spain were tested for piroplasmid DNA with two different nested-PCR assays targeting the 18S rRNA gene.
View Article and Find Full Text PDFEcology
December 2024
Wildlife Research and Monitoring Section, Ministry of Natural Resources and Forestry, Peterborough, Ontario, Canada.
Animals within social groups respond to costs and benefits of sociality by adjusting the proportion of time they spend in close proximity to other individuals in the group (cohesion). Variation in cohesion between individuals, in turn, shapes important group-level processes such as subgroup formation and fission-fusion dynamics. Although critical to animal sociality, a comprehensive understanding of the factors influencing cohesion remains a gap in our knowledge of cooperative behavior in animals.
View Article and Find Full Text PDFJ Parasitol
December 2024
U.S. Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705.
As predators of a wide variety of livestock and wildlife species, wolves (Canis lupus) could serve as definitive hosts for species of Sarcocystis parasites infecting many intermediate hosts. Sarcocystis sporocysts have been observed in the feces of wolves fed infected beef before, but genetic tools have not yet definitively identified which species of parasites they harbor, impairing understanding of their contribution to infections in wild and domesticated intermediate hosts. Therefore, we genetically characterized sporocysts derived from a small sample of naturally infected wolves in Minnesota.
View Article and Find Full Text PDFZoonoses Public Health
December 2024
Parasitology Reference and Research Laboratory, National Centre for Microbiology, Majadahonda, Madrid, Spain.
Introduction: Intestinal microeukaryote parasites are major contributors to the burden of diarrhoea in humans and domestic animals, but their epidemiology in wildlife is not fully understood. We investigated the frequency, genetic diversity and zoonotic potential of protists of animal and public health significance in free-ranging grey wolf (Canis lupus) populations in south-western Europe.
Methods: Individually formed faecal samples collected from necropsied wolves or scat trails in Italy (n = 47), Portugal (n = 43) and Spain (n = 225) during the period 2011-2023 were retrospectively analysed using molecular (PCR and Sanger sequencing) methods.
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