An 11-yr-old female Eurasian otter (Lutra lutra) presented with multiple cutaneous nodules identified histologically as malignant melanomas of spindle cell and epithelioid cell type. Metastases were detected in lymph nodes and liver, and the tumor, which was derived from melanocytes, showed aggressive biological behavior. Only occasional reports exist of neoplastic disease in otters.
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http://dx.doi.org/10.1638/1042-7260(2000)031[0087:MMIAEO]2.0.CO;2 | DOI Listing |
Res Vet Sci
January 2025
Animal Pathology Department, Veterinary Faculty, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain; Clinical Immunology Laboratory, Veterinary Faculty, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain. Electronic address:
Leishmaniosis, caused by Leishmania infantum and transmitted by sand flies, is a significant zoonotic disease. Dogs are primary reservoirs, but other domestic animals, such as cats and ferrets, and wild species, including Eurasian otters and European mink, can be hosts. This study focused on European mink, a critically endangered species, investigating the seroprevalence of L.
View Article and Find Full Text PDFEvol Appl
January 2025
Organisms and Environment, School of Biosciences and Water Research Institute Cardiff University Wales UK.
Conservation efforts are leading to demographic growth and spatial expansion of some previously endangered species. However, past population bottlenecks or population size fluctuations can have lasting effects on effective population size ( ), even when census size ( ) appears large or recovered. The UK metapopulation of Eurasian otters () has a well-documented history of population recovery over recent decades, with indicators of presence (faeces and footprints) increasing in distribution and number over successive national surveys.
View Article and Find Full Text PDFBiol Lett
September 2024
Research Centre in Evolutionary Anthropology and Palaeoecology, Liverpool John Moores University, Liverpool, UK.
The Eurasian otter is a wide-ranging semi-aquatic mammal that underwent a significant population decline in the last century, leading to local extinctions, reduction and fragmentation of populations. The individuals of populations exposed to both external and internal stress may present the inability to produce a specific developmental outcome, generating developmental 'noise' (developmental instability (DI)). Factors contributing to DI include inbreeding depression, population bottlenecks, habitat loss and exposure to pollution.
View Article and Find Full Text PDFAntibiotics (Basel)
June 2024
Croatian Veterinary Institute, Savska Cesta 143, 10000 Zagreb, Croatia.
subsp. is pathogenic mainly to birds, although cases of mycobacteriosis caused by these bacteria have also been reported in other animals and humans. Not much is known about the effects of this pathogen on otters.
View Article and Find Full Text PDFEnviron Monit Assess
July 2024
Fondation Pro Lutra, Wasserwerkgasse 2, 3011, Bern, Switzerland.
Microplastics (MP) are omnipresent in a wide range of environments, constituting a potential threat for aquatic and terrestrial wildlife. Effects in consumers range from physical injuries to pathological reactions. Due to potential bioaccumulation of MP, predators are of particular concern for MP induced health effects.
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