南美大陆沿海的美洲狮将企鹅纳入食谱

Core Viewpoint - The return of pumas to the coastal regions of South America has led them to adopt Magellanic penguins as a new food source due to ecological restoration efforts and reduced human hunting activities [1] Group 1: Ecological Changes - Pumas, previously reduced in number due to hunting for preying on sheep, are now returning to Patagonia as a result of the establishment of Monte León National Park in 2004 and decreased hunting [1] - The interaction between pumas and penguins has significantly changed, with pumas exhibiting more frequent interactions, smaller territories, and reduced activity ranges compared to their previous solitary hunting behavior [1] Group 2: Penguin Population Stability - From 2004 to 2017, the penguin population in the area remained stable or even slightly increased, indicating that the new predator-prey dynamics may not adversely affect the penguin population [1] Group 3: Research Findings - The study highlights how ecological restoration can lead to unprecedented ecological interactions, altering the dynamics between predators and prey [1]