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You are here: Home / Journal Articles / Hormonal and behavioural stress responses to capture and radio-collar fitting in free-ranging pampas deer ( Ozotoceros bezoarticus) / About

Hormonal and behavioural stress responses to capture and radio-collar fitting in free-ranging pampas deer ( Ozotoceros bezoarticus)

By M. S. Munerato, J. A. Marques, N. A. Caulkettt, W. M. Tomas, E. S. Zanetti, R. G. Trovati, G. T. Pereira, R. Palme

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Abstract

This study evaluated the short-term hormonal and behavioural responses to capture and radio-collar fitting in free-ranging pampas deer ( Ozotoceros bezoarticus). Twenty adult deer (eleven females and nine males) were captured in the South Pantanal wetland (Brazil) and equipped with VHF radio-collars (marked deer). Untreated adult deer of the same sex were randomly chosen as the control group (nine females and nine males). On the day following capture, an observer followed all deer for faecal collection and behaviour evaluation. Faecal samples were immediately refrigerated and frozen at -20°C within a maximum of 12 h. Faecal glucocorticoid metabolites (FGM) were measured using an I I-oxoaetiocholanolone enzyme immunoassay. A qualitative behaviour assessment and the consequences of capture were evaluated using pre-defined terminologies and scores. Flight distance was recorded using a range finder. FGM increased from 19-22 h after capture onwards and peak concentrations were five times (median) higher as the respective baseline values. FGM values of marked deer were significantly higher at 22-25 and 25-28 h compared with controls. Marked male but not female deer had significantly higher FGM values at 22-25 and 25-28 h compared with their baseline values. Marked deer were significantly more fearful, less sociable and defensive than controls. The absences of significant increases of FGM in the captured female deer may indicate that females are less prone to capture stress. The significantly more fearful, and less sociable and defensive patterns observed in marked deer may be relevant during capture of lactating females or in areas with high predator pressure.

Publication Title Animal Welfare
Volume 24
Issue 4
Pages 437-446
ISBN/ISSN 0962-7286
DOI 10.7120/09627286.24.4.437
Language English
Author Address Department of Clinical and Veterinary Surgery, Faculty of Agrarian Veterinary Sciences, Sao Paulo State University (FCAV-UNESP), Via de Acesso Professor Paulo Donato Castellane s/n, Jaboticabal - SP 14884-900, Brazil.marinamunerato@gmail.com
Cite this work

Researchers should cite this work as follows:

  • Munerato, M. S.; Marques, J. A.; Caulkettt, N. A.; Tomas, W. M.; Zanetti, E. S.; Trovati, R. G.; Pereira, G. T.; Palme, R. (2015), "Hormonal and behavioural stress responses to capture and radio-collar fitting in free-ranging pampas deer ( Ozotoceros bezoarticus)," http://habricentral.org/resources/54622.

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Tags
  1. Animals
  2. Animal welfare
  3. Brazil
  4. Deer
  5. Developing countries
  6. Enzymes
  7. Evaluation
  8. Feces
  9. Flight
  10. Glossaries
  11. Glucocorticoids
  12. Grasslands and rangelands
  13. Immunoassay
  14. Languages
  15. Mammals
  16. Metabolites
  17. natural enemies
  18. peer-reviewed
  19. predators
  20. Ruminants
  21. South America
  22. Threshold Countries
  23. ungulates
  24. United States of America
  25. vertebrates
Badges
  1. peer-reviewed