A mortality survey of free range nutria (Myocastor coypus) |
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Authors: | Pablo Martino Juan C Sassaroli José Calvo Jorge Zapata Eduardo Gimeno |
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Institution: | (1) Pathology - CIC & Microbiology Department, Veterinary College, 60 y 118, CC 296 (1900) La Plata, Argentina;(2) Ecological Reserve, A. T. Achával Rodríguez 1550 (1107), Buenos Aires, Argentina;(3) Fur-Bearing Animals Dept., INTA, CC 276 (7620) Balcarce, Buenos Aires, Argentina |
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Abstract: | A review of the literature revealed little information on natural occurring diseases in wild nutria. In this report, a summary
of necropsies performed on free-range animals from four different geographical areas, is presented. Fifty-two percent of the
nutria had trauma (mostly by predation and road kill), 15% had poisoning by different toxics, and 11% had starvation. The
rest died due to infectious diseases and miscellaneous causes, while 21 individuals had no significant lesions. The occurrence
of infections seems sporadic with a far lower prevalence than in the farmed animals, while the incidence of poisoning is rather
high. In addition, anthrax was diagnosed in two individuals. Thus, nutria are probably subject to mortality from a number
of different human-induced causes rather than natural ones. Analysis of these records may provide insight into prevention
of problem and better management practices. |
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Keywords: | Wild nutria Mortality Post mortem examination |
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