Nonetheless, their accessible prey weight range was 6–60 kg, preferred prey weight range was 45–85 kg, and mean mass of significantly preferred prey was 32 ± 13 kg leading to a predator to prey body mass ratio of 1:0.53, which is much less than that of other solitary felids (although 1:0.84 may be the relationship with the smallest jaguars). Generalized linear models showed that jaguars select prey primarily based on socio-ecological and behavioral traits (abundance and herd size), rather than morphological characteristics (body size). We found that jaguars significantly preferred capybara Hydrochaeris hydrochaeris and giant anteater Myrmecophaga tridactyla, and avoided agoutis, carnivorans, primates, black-eared opossum Didelphis marsupialis and tapirs. We reviewed the literature and found 25 studies reporting 3214 jaguar kills recorded throughout the species' distribution. We used a comparative ecological approach to investigate whether the existing prey preference patterns of jaguars Panthera onca were potentially affected by the Pleistocene extinctions in the Americas compared with large felids in Africa and Asia. 8Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, CA, USAĭocumenting the impacts of the Pleistocene megafaunal extinctions on predator-prey interactions is a challenge because of the incomplete fossil record and depauperate extant community structure.7Conservation Biogeography Lab, Ecology Department, Federal University of Goiás, Goiânia, Brazil.6Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, USA.4Wildlife Conservation Research Unit, Department of Zoology, Recanati-Kaplan Centre, University of Oxford, Abingdon, UK.3Centre for Wildlife Management, University of Pretoria, Pretoria, South Africa.2Centre for African Conservation Ecology, Nelson Mandela Metropolitan University, Port Elizabeth, South Africa.1School of Biological Sciences, School of Environment, Natural Resources and Geography, College of Natural Sciences, Bangor University, Bangor, UK.Montgomery 4,6, Anna Newlove 1, Susana Rostro-García 4, Lilian P.

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