A5091681082- Wildlife Ecology and Conservation
- Animal Behavior and Welfare Studies
- Genetic and phenotypic traits in livestock
- Evolution and Paleontology Studies
- Ruminant Nutrition and Digestive Physiology
- Bat Biology and Ecology Studies
- Primate Behavior and Ecology
- Animal Behavior and Reproduction
- Animal Ecology and Behavior Studies
- Physiological and biochemical adaptations
- Ethics and Social Impacts of AI
- Pleistocene-Era Hominins and Archaeology
- Effects of Environmental Stressors on Livestock
- Rangeland Management and Livestock Ecology
- Epistemology, Ethics, and Metaphysics
- Animal Disease Management and Epidemiology
- Human-Animal Interaction Studies
- Reproductive Physiology in Livestock
- Amphibian and Reptile Biology
- Ethics in Business and Education
- Veterinary Equine Medical Research
- Ethics in medical practice
- Biomedical and Chemical Research
- Ethics in Clinical Research
- Paleontology and Evolutionary Biology
University of Rostock
2023-2025
Halle Zoo
2015-2024
RWTH Aachen University
2022-2024
University of Cambridge
2024
Bayer (Germany)
2023
Fraunhofer Institute for Integrated Circuits
2022
University Medical Centre Mannheim
2020-2021
University Hospital Heidelberg
2020-2021
Heidelberg University
2020-2021
University of Zurich
2009-2019
Abstract While it is commonly believed that animals live longer in zoos than the wild, this assumption has rarely been tested. We compared four survival metrics (longevity, baseline mortality, onset of senescence and rate senescence) between both sexes free-ranging zoo populations more 50 mammal species. found mammals from generally lived their wild counterparts (84% species). The effect was most notable species with a faster pace life (i.e. short span, high reproductive mortality wild)...
Digestive physiology has played a prominent role in explanations for terrestrial herbivore body size evolution and size-driven diversification niche differentiation. This is based on the association of increasing mass (BM) with diets lower quality, putative mechanisms by which higher BM could translate into digestive efficiency. Such concepts, however, often do not match empirical data. Here, we review concepts data BM, diet metabolism, doing so give examples problems using allometric...
Abstract The evolution of high‐crowned teeth or hypsodonty in herbivorous mammals is widely interpreted as a species‐specific adaptation to increasingly wear‐inducing diets and environments at evolutionary time scales, with internal abrasives (such phytoliths grasses) and/or external dust grit) putative causative factors. mesowear score ( MS ) instead describes tooth wear experienced by individual animals during their lifetime. Under the assumption that abrasiveness causes individuals same...
Patterns of reproductive seasonality in the Carnivora are difficult to study comparatively, due limited numbers species for which information is available. Long-term databases captive populations could overcome this difficulty. We apply a categorical description and quantitative high-resolution measure (birth peak breadth, number days 80% all births occur) based on daily observations captivity characterize degree 114 with average 1357 per species. find that majority retained birth displayed...
Although Bergmann’s rule – stating that among closely related species, the bigger ones will inhabit colder climates/higher latitudes was formulated for inter‐specific comparisons, most analyses tested this pattern in mammals were on an intra‐specific level. To date, no large‐scale taxonomy‐driven cross‐species evaluation of predicted by Bergmann exists. Here we show, a dataset comprising 3561 mammal species from 26 orders, while there is significant correlation between latitude and body mass...
Summary A key concept of body mass ( BM ) in niche separation large herbivores assumes that the decrease diet quality inherent to increasing (due less selective feeding behaviour) is balanced by a simultaneous increase digestive ability longer retention times), resulting no or less‐than‐expected reduction digestibility (as measured animal as result and ability). However, second part this has been challenged recently due theoretical problems mismatch with empirical data. proxy for...
ABSTRACT Primates, like other mammals, exhibit an annual reproductive pattern that ranges from strictly seasonal breeding to giving birth in all months of the year, but factors mediating this variation are not fully understood. We applied both a categorical description and quantitative measures peak breadth based on daily observations zoos characterise seasonality 141 primate species with average 941 events per species. Absolute day length at beginning mating season seasonally reproducing...
Abstract Purpose The comprehensive complication index (CCI) is a new tool for reporting the cumulative burden of postoperative complications on continuous scale. This study validates CCI urological surgery and its benefits over Clavien-Dindo-Classification (Clavien). Material methods Data from prospectively maintained data base all consecutive patients at university care-center was analyzed. Complications after radical cystectomy (RC), prostatectomy (RP), partial nephrectomy (PN) were...
The integration of AI technology into resort-to-force decision making would give machines influence over decisions determining the life or death countless people. Despite this prospective impact on entire societies, many developers have only a rudimentary ethical understanding their AI. Moreover, if development is ethically unreflective, minor flaws can spiral harmful machine-made decisions. So how we ensure responsible military development, especially in context AI-supported resort to...
Zoo animal husbandry aims at constantly improving husbandry, reproductive success and ultimately welfare. Nevertheless, analyses to determine factors influencing of different species are rare. The relative life expectancy (rLE; (LE) as proportion longevity) describes captive populations. Correlating rLE with biological characteristics species, reasons for variation in can be detected. We analysed data 166 901 animals representing 78 ruminant kept 850 facilities. females correlated the...
Extant rhinos are the largest extant herbivores exhibiting dietary specialisations for both browse and grass. However, adaptive value of wear-induced tooth morphology in has not been widely studied, data on individual cusp positions have rarely published. We evaluated upper cheek dentition browsing Diceros bicornis Rhinoceros sondaicus, mixed-feeding R. unicornis grazing Ceratotherium simum using an extended mesowear method adapted rhinos. included single scoring (EM(R)-S) to investigate...
Given the physiological limits to egg size, large-bodied non-avian dinosaurs experienced some of most extreme shifts in size during postnatal ontogeny found terrestrial vertebrate systems. In contrast, mammals—the other dominant group since Mesozoic—have less complex ontogenies. Here, we develop a model that quantifies impact size-specific interspecies competition on abundances differently sized and mammals, taking into account extended niche breadth realized among large oviparous species....
How anatomical, physiological and ecological (life history) features scale with body mass is a fundamental question in biology. There an ongoing debate the scientific literature whether allometric scaling follows universal pattern that can be described single model, or differs between groups. However, recently some analyses were published demonstrating change across range: brain‐size allometry of mammals indicates curvilinear double‐logarithmic space, quadratic space was found one largest...