Mortality causes in free-ranging eurasian brown bears (ursus arctos arctos) in Spain 1998-2018
| Autor: | Olga Alarcia, Luis J. Royo, Juan Francisco García Marín, E. Gayo, Ana Balseiro, Ramón Balsera |
|---|---|
| Přispěvatelé: | Principado de Asturias, European Commission |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
040301 veterinary sciences Population brown bear Ursus arctos arctos pathology cause of death infectious diseases traumas Physiology Cause of death 010603 evolutionary biology 01 natural sciences Article 0403 veterinary science Infectious canine hepatitis lcsh:Zoology Strychnine poisoning Pathology Traumas Medicine lcsh:QL1-991 Mushroom poisoning Ursus education Myositis education.field_of_study lcsh:Veterinary medicine General Veterinary biology business.industry 04 agricultural and veterinary sciences biology.organism_classification medicine.disease Brown bear Etiology lcsh:SF600-1100 Infectious diseases Animal Science and Zoology business |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Animals; Volume 10; Issue 9; Pages: 1538 Animals, Vol 10, Iss 1538, p 1538 (2020) Animals : an Open Access Journal from MDPI |
| Popis: | 10 páginas, 2 figuras, 4 tablas. This work summarizes the mortality cases of twenty-five free-ranging Eurasian wild brown bears (Ursus arctos arctos) from the Cantabrian mountain range submitted for necropsy in Asturias and Castilla y León (northwestern Spain) from 1998 to 2018. Mortality cases were classified both caused by (i) “non-human intervention” or “human intervention” causes and based on (ii) “non-infectious” or “infectious” etiology. In four cases (16%) it was not possible to determine the cause of death due to the inadequate preservation of collected specimens or insufficient tissue availability. Based on “non-human intervention” or “human intervention” causes, fourteen of the 21 (66.7%) brown bears died as a consequence of “non-human intervention” due to traumatic lesions (fights, unknown traumas or infanticide), infectious canine hepatitis, neoplasia or mushroom poisoning. In contrast, seven (33.3%) brown bears died by “human intervention” due to illegal hunting (shooting or snare), handling (during transit in an attempt to reintroduce a bear back into the wild) or strychnine poisoning. Based on “non-infectious” or “infectious” etiology, twelve of the 21 (57.1%) brown bears died due to “non-infectious” causes, namely traumatic lesions such as shooting, snare, fighting or infanticide, handling, strychnine poisoning, mushroom poisoning or neoplasia. The remaining nine (42.9%) animals died due to “infectious” diseases which included gangrenous myositis, infectious canine hepatitis or septicemia. In six of those cases traumatic lesions caused by non-human or human activities were complicated with bacterial infection (clostridiosis and septicemia) which finally caused the death of those animals. Additionally, exertional myopathy was observed in the handled animal and in one bear found in a snare. In a free-ranging population of Eurasian brown bear from the Cantabrian mountain range, main causes of death are attributed to non-human related traumatic lesions and infectious diseases (primary developed such as infectious canine hepatitis or secondary developed such as clostridiosis or septicemia) which is in contrast to previously reported data for other bear populations. These data are valuable and may help in the conservation and management of this recovering population. This work was partially supported by the Principado de Asturias, PCTI 2018–220 (GRUPIN: IDI2018-000237 and FEDER). |
| Databáze: | OpenAIRE |
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