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Large-bodied mammals living in fragmented habitats are at higher risk of extinction, and such risk can be influenced by ecological factors such as predator-prey system dynamics. These dynamics can be particularly complex for conservation management when one endangered species preys on another endangered species in an isolated or poor-quality habitat. Here we describe predation events observed over 19 months that involved two threatened species: the largest carnivore in Madagascar, the fosa (), and three groups of diademed sifaka () in the Betampona Strict Nature Reserve.
View Article and Find Full Text PDFSilky Sifakas (Propithecus candidus) Use Sleep Sites for Thermoregulation, Food Access and Predator Avoidance.
Folia Primatol (Basel)
January 2022
Lemur Conservation Foundation, Myakka City, Florida, USA.
Primate sleeping site selection is influenced by multiple ecological factors including predation avoidance, thermoregulation and food access. To test these hypotheses, we studied the sleeping trees used by a group of wild silky sifakas (Propithecus candidus) in Marojejy National Park, Madagascar. During this 10-month study, the group slept in 828 sleeping trees from approximately 35 genera.
View Article and Find Full Text PDFTesting yawning hypotheses in wild populations of two strepsirrhine species: Propithecus verreauxi and Lemur catta.
Am J Primatol
November 2015
Natural History Museum, University of Pisa, Calci, Pisa, Italy.
Yawning, although easily recognized, is difficult to explain. Traditional explanations stressed physiological mechanisms, but more recently, behavioral processes have received increasing attention. This is the first study to test a range of hypotheses on yawning in wild primate populations.
View Article and Find Full Text PDFCooperative rescue and predator fatality involving a group-living strepsirrhine, Coquerel's sifaka (Propithecus coquereli), and a Madagascar ground boa (Acrantophis madagascariensis).
Primates
April 2015
Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, Kent, CT2 7NR, UK,
The interactions between primates and their snake predators are of interest because snakes have influenced the evolution of primate visual systems and predation has driven the evolution of primate behaviour, including group living. However, there are few accounts of primate-snake interactions in the wild. We report an incident from Northwest Madagascar in which a large female Madagascar ground boa (Acrantophis madagascariensis) captured an adult female Coquerel's sifaka (Propithecus coquereli); upon capture, the prey's group members proceeded to bite and scratch the snake until it released the prey, which survived.
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