Impact du loup (canis lupus) sur les ongules sauvages et domestiques dans le massif du Mercantour

摘要: During 1995-1998, wolves (Canis lupus) recolonizing the Mercantour Mountains strongly selected mouflon (Ovis gmelini), introduced in 1950s and originating from feral sheep inhabiting predator-free Mediterranean islands, over chamois (Rupicapra rupicapra), a native ungulate species. We hypothesized that a) difference anti-predator behaviour might contribute to observed of selectivity for two species, b) vigilance increased with predation risk following wolf recolonization. studied males females each species during foraging activities spring summer times areas national Park, accounting group size reproductive status females. Chamois scanned more often allocated greater proportion time than mouflon. In both decreased as linear function log size, offspring were vigilant barren Vigilance was higher after recolonization before, appeared differ between study sites.