Long-Term Field Studies of Primates

pp 67-100


Long-Term Lemur Research at Centre Valbio, Ranomafana National Park, Madagascar

  • Patricia C. WrightAffiliated withInstitute for the Conservation of Tropical Environments, Stony Brook University Email author 
  • , Elizabeth M. ErhartAffiliated withDepartment of Anthropology, Texas State University
  • , Stacey TecotAffiliated withSchool of Anthropology, University of Arizona
  • , Andrea L. BadenAffiliated withIDPAS, Stony Brook University
  • , Summer J. Arrigo-NelsonAffiliated withDepartment of Biological and Environmental Sciences, University of California in Pennsylvania
  • , James HerreraAffiliated withIDPAS, Stony Brook University
  • , Toni Lyn MorelliAffiliated withMuseum of Vertebrate Zoology, Department of Environmental Sciences, Policy and Management, U.C. Berkeley
  • , Marina B. BlancoAffiliated withDepartment of Anthropology, University of Massachusetts
  • , Anja DeppeAffiliated withIDPAS, Stony Brook University
    • , Sylvia AtsalisAffiliated withSan Diego Zoological Society, The San Diego Zoo’s Institute for Conservation Research
    • , Steig JohnsonAffiliated withDepartment of Anthropology, University of Calgary
    • , Felix RatelolahyAffiliated withWildlife Conservation Society
    • , Chia TanAffiliated withSan Diego Zoological Society, The San Diego Zoo’s Institute for Conservation Research
    • , Sarah ZohdyAffiliated withUniversity of Helsinki

* Final gross prices may vary according to local VAT.

Get Access


We present findings from 25 years of studying 13 species of sympatric primates at Ranomafana National Park, Madagascar. Long-term studies have revealed that lemur demography at Ranomafana is impacted by climate change, predation from raptors, carnivores, and snakes, as well as habitat disturbance. Breeding is seasonal, and each species (except Eulemur rubriventer) gives birth synchronously to be able to wean before winter. Infant mortality is high (30–70%) and partly due to infanticide in Propithecus edwardsi,and perhaps Varecia variegata. Diurnal lemurs can live beyond 30 years in the wild and most females reproduce until death. Small-bodied Microcebus rufuslive up to 9 years without signs of senescence. Prolemur simusmigrates in search of new bamboo and mates, and related V. variegatamothers park their multiple offspring in “kindergartens,” protected by others while mothers forage. Interference competition among sympatric lemurs occurs. Anthropogenic factors, such as past selective logging and climate change may influence the declining density of E. rufifrons, P. simus, and P. edwardsiwhile not affecting the density of pair-living species.