Seasonal and individual variation in selection by feral cats for areas with widespread primary prey and localised alternative prey

摘要: Context Seasonal and individual variation in predator selection for primary alternative prey can affect predator–prey dynamics, which further influence invasive-predator impacts on rare prey. Aims We evaluated seasonal resource by feral cats (Felis silvestris catus) areas with European rabbits (Oryctolagus cuniculus) around a breeding colony of endangered black-fronted terns (Chlidonias albostriatus) the Upper Ohau River, within Mackenzie Basin New Zealand. Methods Within cat population subject to localised control (within 1-km area surrounding tern colony), we mapped movements 17 individuals using GPS collars, third-order (i.e. home ranges) resource-selection functions mixed effects. The year was divided into non-breeding seasons terns. Key results Three eight monitored during season used proportion availability one selected it. These four therefore pose threat despite ongoing control. Selection high relative rabbit abundance not ubiquitous year-round, previous research showing that are their Basin. Conclusions Results suggest should reduce use select (less than half monitored), but is unlikely alleviate those low abundance. Hence, also required target these individuals. thus support current coupled-control buffer colony. Future determine what scale yields greatest benefits prey, such as colony, whether aid hyperpredation via landscape supplementation. Implications present study has highlighted importance considering effects predators, role when designing management programs protect