Dataset Information

Canine distemper virus may affect European wild cat populations in Central Spain.

ABSTRACT: The main objective of this brief communication is to inform about the exposure to certain pathogens of interest for mesocarnivores in wildcats (Felis silvestris silvestris) that inhabit a human-domestic-wild ecotone located in a Natural Park (Serranía de Cuenca, Central Spain). Blood and mucosal swabs (nasal, conjunctival and rectal) samples were collected from nine alive animals to detect canine distemper virus (CDV), parvovirus (CPV/FPV), feline leukaemia virus (FeLV), feline coronavirus (FCoV), feline immunodeficiency virus (FIV), Leptospira interrogans, Chlamydia felis, Ehrlichia canis, Toxoplasma gondii, and Neospora caninum. ELISA, immunochromatograpy, microscopy agglutination test and PCR assays were used. The results show the first worldwide detection of exposure of wildcats to L. interrogans (3 positive/9 analysed) and the first detection of exposure to CVD (7/9), of carriers ofC felis (2/9) and of fecal spreading of CPV-FPV (2/9) in wildcats in Spain. Exposure to T. gondii and CPV-FPV was detected in 5 of the 9 wildcats analysed, and to FelV in 4 of 9. No FIV, FCoV, Ehrlichia canis and Neospora caninum were detected. The results reveal the circulation of pathogens among the wildcat population studied, but more vigilance is needed for an accurate assessment of the impact of these pathogens on the health status of this population.

SUBMITTER: Candela MG

PROVIDER: S-EPMC7091739 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Canine distemper virus may affect European wild cat populations in Central Spain.

Candela Mónica G MG Pardavila Xosé X Ortega Nieves N Lamosa Adrián A Mangas Julián G JG Martínez-Carrasco Carlos C

Mammalian biology = Zeitschrift fur Saugetierkunde 20190506 1

The main objective of this brief communication is to inform about the exposure to certain pathogens of interest for mesocarnivores in wildcats (<i>Felis silvestris silvestris</i>) that inhabit a human-domestic-wild ecotone located in a Natural Park (Serranía de Cuenca, Central Spain). Blood and mucosal swabs (nasal, conjunctival and rectal) samples were collected from nine alive animals to detect canine distemper virus (CDV), parvovirus (CPV/FPV), feline leukaemia virus (FeLV), feline coronaviru ...[more]

PMID: 32218716

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Project description:Fewer than 500 Amur tigers (Panthera tigris altaica) remain in the wild. Due to low numbers and their solitary and reclusive nature, tiger sightings across their range in the Russian Far East and China are rare; sightings of sick tigers are rarer still. Serious neurologic disease observed in several wild tigers since 2001 suggested disease emergence in this endangered species. To investigate this possibility, histology, immunohistochemistry (IHC), in situ hybridization (ISH), and reverse transcription-PCR (RT-PCR) were performed on tissues from 5 affected tigers that died or were destroyed in 2001, 2004, or 2010. Our results reveal canine distemper virus (CDV) infection as the cause of neurologic disease in two tigers and definitively establish infection in a third. Nonsuppurative encephalitis with demyelination, eosinophilic nuclear viral inclusions, and positive immunolabeling for CDV by IHC and ISH were present in the two tigers with available brain tissue. CDV phosphoprotein (P) and hemagglutinin (H) gene products were obtained from brains of these two tigers by RT-PCR, and a short fragment of CDV P gene sequence was detected in lymph node tissue of a third tiger. Phylogenetically, Amur tiger CDV groups with an Arctic-like strain in Baikal seals (Phoca siberica). Our results, which include mapping the location of positive tigers and recognition of a cluster of cases in 2010, coupled with a lack of reported CDV antibodies in Amur tigers prior to 2000 suggest wide geographic distribution of CDV across the tiger range and recent emergence of CDV as a significant infectious disease threat to endangered Amur tigers in the Russian Far East. Recognition of disease emergence in wildlife is a rare occurrence. Here, for the first time, we identify and characterize a canine distemper virus (CDV), the second most common cause of infectious disease death in domestic dogs and a viral disease of global importance in common and endangered carnivores, as the etiology of neurologic disease and fatal encephalitis in wild, endangered Amur tigers. We establish that in 2010 CDV directly or indirectly killed -1% of Amur tigers. Location of positive cases over an expansive geographic area suggests that CDV is widely distributed across the tiger range. Interspecies interactions are increasing as human populations grow and expand into wildlife habitats. Identifying animal reservoirs for CDV and identifying the CDV strains that are transmissible to and among wildlife species, including Amur tigers and sympatric critically endangered Amur leopards (Panthera pardus orientalis), is essential for guiding conservation and mitigation efforts.

Dataset Information

Canine distemper virus may affect European wild cat populations in Central Spain.

Publications

Canine distemper virus may affect European wild cat populations in Central Spain.

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