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New method for testosterone determination in spotted hyenas

Date:
June 24, 2015
Source:
Forschungsverbund Berlin e.V. (FVB)
Summary:
For the first-time, researchers have succeeded in measuring metabolites of testosterone excreted in the feces of spotted hyenas. This innovative non-invasive research method is essential to avoid disturbance of animals.
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Spotted hyena (Crocuta crocuta) and enzyme immunoassay.
Credit: East ML & Dehnhard M

In an innovation in hormone research, team of researchers from the Leibniz Institute of Zoo and Wildlife Research (IZW) and the University of Pretoria succeeded for the first-time in measuring metabolites of testosterone excreted in the feces of spotted hyenas. This innovative non-invasive research method is essential to avoid disturbance of animals.

In male mammals, testosterone plays a key role in both development and reproduction. Thus, measures of changes in testosterone concentration both within an animal's lifespan and across populations provide information essential for an understanding of growth, reproductive strategies and aging. However, hormone research normally requires the taking of blood samples, which in wild animals is difficult, and not always possible, particularly in protected areas where the capture of wild animals is often prohibited. Additionally, capture and blood sampling may cause stress in wild animals, thereby inducing a change in the hormone concentration being measured. In contrast, the non-invasive monitoring of hormones avoids all these problems. Thus, physiological data of free-ranging animals can be collected easily, thereby allowing repeated sampling from the same animal in its natural environment throughout its lifespan.

Details and verification of the efficacy of the first antibody-based enzyme immunoassay to monitor fecal testosterone metabolites in spotted hyenas are published in PLOS ONE. It is now possible to investigate the influence of age, social status and reproductive behavioural strategies on testosterone concentrations in wild spotted hyenas.


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Materials provided by Forschungsverbund Berlin e.V. (FVB). Note: Content may be edited for style and length.


Journal Reference:

  1. Susanne Pribbenow, Marion L. East, Andre Ganswindt, Adrian S. W. Tordiffe, Heribert Hofer, Martin Dehnhard. Measuring Faecal Epi-Androsterone as an Indicator of Gonadal Activity in Spotted Hyenas (Crocuta crocuta). PLOS ONE, 2015; 10 (6): e0128706 DOI: 10.1371/journal.pone.0128706

Cite This Page:

Forschungsverbund Berlin e.V. (FVB). "New method for testosterone determination in spotted hyenas." ScienceDaily. ScienceDaily, 24 June 2015. <www.sciencedaily.com/releases/2015/06/150624143223.htm>.
Forschungsverbund Berlin e.V. (FVB). (2015, June 24). New method for testosterone determination in spotted hyenas. ScienceDaily. Retrieved May 23, 2017 from www.sciencedaily.com/releases/2015/06/150624143223.htm
Forschungsverbund Berlin e.V. (FVB). "New method for testosterone determination in spotted hyenas." ScienceDaily. www.sciencedaily.com/releases/2015/06/150624143223.htm (accessed May 23, 2017).

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