Publication: Testosterone is positively related to the output of nematode eggs in male alpine ibex (Capra ibex) faeces
Testosterone is positively related to the output of nematode eggs in male alpine ibex (Capra ibex) faeces
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Decristophoris, P. M. A., von Hardenberg, A., & McElligott, A. G. (2007). Testosterone is positively related to the output of nematode eggs in male alpine ibex (Capra ibex) faeces. Evolutionary Ecology Research, 9, 1277–1292.
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Question: Does testosterone suppress the immune system of males in a strongly sexually dimorphic and long-lived ungulate?
Immunocompetence handicap hypothesis: Testosterone promotes the development of secondary sexual characteristics and simultaneously suppresses immunological defence.
Organisms: Free-ranging and individually identifiable male Alpine ibex (Capra ibex).
Methods: In faecal samples, measure testosterone levels (ng · g−1) and the number of parasite eggs per gram of faeces (faecal egg counts). Determine social dominance
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- Decristophoris, P M A
- von Hardenberg, A
- McElligott, A G
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Decristophoris, P. M. A., von Hardenberg, A., & McElligott, A. G. (2007). Testosterone is positively related to the output of nematode eggs in male alpine ibex (Capra ibex) faeces. Evolutionary Ecology Research, 9, 1277–1292.
