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The effect of prey abundance and foraging tactics on the population dynamics of a social, territorial carnivore, the spotted hyena
It is demonstrated that hyenas in the Ngorongoro Crater, Tanzania, redistributed themselves from less profitable to more profitable areas, even when this required them to undertake foraging trips to areas beyond their clan territory boundary, or required normally philopatric females to emigrate.
The response of spotted hyaenas to long‐term changes in prey populations: functional response and interspecific kleptoparasitism
This study is the first to demonstrate both a functional response of a predator to changes in the size of prey populations and an associated change in foraging behaviour of the predator.
Female mate-choice drives the evolution of male-biased dispersal in a social mammal
It is shown that male-biased dispersal in the spotted hyaena (Crocuta crocuta) most probably results from an adaptive response by males to simple female mate-choice rules that have evolved to avoid inbreeding.
Social status does not predict corticosteroid levels in postdispersal male spotted hyenas
Social, state-dependent and environmental modulation of faecal corticosteroid levels in free-ranging female spotted hyenas†
It is demonstrated for the first time, to the authors' knowledge, that corticosteroid concentrations may differ between periods with and without social stress for a free-ranging female mammal and that the modulating effect of social status may depend on reproductive status.
Social support drives female dominance in the spotted hyaena
- C. Vullioud, E. Davidian, B. Wachter, F. Rousset, A. Courtiol, O. Höner
- PsychologyNature Ecology & Evolution
- 11 October 2018
It is shown that social support can drive sex-biased dominance and provides empirical evidence that a sex-role-defining trait can emerge without the direct effect of sex.
An Advanced Method to Assess the Diet of Free-Ranging Large Carnivores Based on Scats
- B. Wachter, Anne-Sophie Blanc, J. Melzheimer, O. Höner, M. Jago, H. Hofer
- Environmental SciencePloS one
- 8 June 2012
It is shown that the new method increases the number of consumed individuals in the diet for large prey animals compared to the conventional method and has important implications for the interpretation of scat-based studies in feeding ecology and the resolution of human-wildlife conflicts for the conservation of large carnivores.
The impact of a pathogenic bacterium on a social carnivore population
- O. Höner, B. Wachter, M. East
- Environmental Science, MedicineThe Journal of animal ecology
- 1 June 2011
The results suggest synergistic effects of ‘bottom–up’ and ‘top–down’ processes on host population dynamics, whereas the longer‐term post‐outbreak reduction in population growth was caused by poor survival of juveniles during the outbreak and subsequent poor recruitment of breeding females.
Social, state-dependent and environmental
It is demonstrated for the first time, to the authors' knowledge, that corticosteroid concentrations may differ between periods with and without social stress for a free-ranging female.
Characterization of Streptococcus equi subsp. ruminatorum isolated from spotted hyenas (Crocuta crocuta) and plains zebras (Equus burchelli), and identification of a M-like protein (SrM) encoding…