European Journal of Wildlife Research

, Volume 54, Issue 2, pp 293–297 | Cite as

A mortality survey of free range nutria (Myocastor coypus)

  • Pablo Martino
  • Juan C. Sassaroli
  • José Calvo
  • Jorge Zapata
  • Eduardo Gimeno
Original Paper


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.


Wild nutria Mortality Post mortem examination 



This study was supported by a grant (2157–1288/04) from the Scientific Research Council (CIC) of the Buenos Aires Province. It is stated that the experiments here comply with the current laws of the country in which they were performed.


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Pablo Martino
    • 1
  • Juan C. Sassaroli
    • 2
  • José Calvo
    • 3
  • Jorge Zapata
    • 1
  • Eduardo Gimeno
    • 1
  1. 1.Pathology - CIC & Microbiology DepartmentVeterinary CollegeLa PlataArgentina
  2. 2.Ecological ReserveBuenos AiresArgentina
  3. 3.Fur-Bearing Animals Dept.INTABuenos AiresArgentina

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