Morphometric characteristics of free-ranging Eurasian lynx Lynx lynx in Switzerland and their suitability for age estimation

摘要: Knowledge of the age individual animals is crucial to assess population dynamics, disease epidemiology and successfully implement conservation strategies. Morphometric data reflect complex interactions factors such as sex, may also depend on genetics, density, food availability, pathogen load climate. The aims this study were suitability morphometric characteristics an ageing tool for lynx during their growth period provide baseline Eurasian populations in Switzerland. Seventeen body measurements 180 free-ranging Lynx known age, captured or found dead Switzerland between 1981–2017 compiled by sex class (juveniles, subadults, adults) tested significant differences males females, classes, (Jura Mountains, Alps). Classification tree analysis (CART) was performed create based physical characteristics. Generalised linear models revealed a effect but no populations. pattern characterised rapid increase all parameters first year life, followed slowdown subadult class; adult corresponded post-growth period. Sex became apparent at 9–11 months most pronounced adults. developed classification trees allowed us correctly categorise 93% females 92% juvenile, adult. In conclusion, can be used place into broad categories represent standardised, non-invasive, fast, cost-free very user-friendly tool. These combined with tooth wear evaluation deliver information accuracy acceptable context various epidemiological investigations selection individuals translocation.