Flexible spatial organization of urban foxes, Vulpes vulpes, before and during an outbreak of sarcoptic mange

摘要: The social and spatial organization of urban fox groups prior to during an outbreak sarcoptic mange was compared with predictions derived from the resource dispersion hypothesis (RDH). We investigated availability three key resources. Neither daytime rest sites nor breeding appeared be limited in availability. food deliberately supplied by local householders examined questionnaire surveys. daily weekly amount greatly excess minimum requirements a pair foxes, but consistent between territories. this source increased markedly as result more people feeding foxes. In agreement RDH, group size 2.25 animals (N=4) 6.57 (N=7). Before mange, two territories were divided. Increased scavenge on smaller may have promoted these changes. Excluding changes, very stable years. After declined direct mange-induced mortality. Surviving their ranges only after neighbouring had died out. Ranges did not increase response decline Nor increases range associated relinquishment parts existing territory. These postmange changes are contrary RDH. Three factors changes: elimination interstitial space, forced dispersal young or future division