Body Mass Dynamic in Hedgehog Population at the Berlin Zoo

Abstract The study examined body mass changes in 50 hedgehogs also known as Erinaceus eurapaeus over a 41 days at the Berlin Zoo. We monitored them using camera surveillance, frequent cage visits for direct observation, and standard weighing techniques for both sexes and capture frequency recorded to assess variation in mass change. Mean body mass increased by 32 gram overall, with males gaining an average of 65 gram and females 10 gram, the difference between sexes was statistically significant. Capture frequency showed no correlation with mass changes. Two hedgehops died early in the study, highlighting potential health vulnerabilities associated with handling. These findings suggest that males may prioritize weight gain as part of reproductive and overwintering strategies, while female on the other hand invest energy differently for offspring upbringing. Capture effects appear minimal in a controlled conditions. By providing consistent food availability and health monitoring, the Berlin Zoo enable stable growth patterns that correspond to the wild population. This controlled Zoo study provides insights into hedgehog ecology and supports conservation efforts, including the optimization of feeding programs for captive and urban population.