Spatiotemporal Coexistence of Mesopredators and Their Prey in a Defaunated Neotropical Rainforest

Abstract

Background and Research Aims Forest loss and fragmentation have a negative impact on large-sized predators and prey, whose populations are reduced or extirpated locally. We explored the spatiotemporal coexistence of the mesopredators (< 15 kg) coyote, ocelot, and white-nosed coati, with their potential prey (< 15 kg) Mexican agouti, lowland paca, and collared peccary in a defaunated rainforest. Methods We used two-species occupancy-detection models between mesopredators and their potential prey, overlap index of circular models, and latency time measurements to evaluate temporal and spatial segregation and habitat use of species. Results Presence of ocelot and coyote was influenced by an increase in the detectability and occupancy of the Mexican agouti. Among most mesopredator–prey species pairs, the correlation for both the capture rates at camera-trap stations and the 1-hr intervals were mainly moderate or low. Some mesopredator–prey species pairs showed low or inverse correlations suggesting species avoidance. The Mexican agouti exhibited a significant negative correlation with the presence of mesopredators. The coyote and ocelot showed a positive correlation with their use of low use trails by people. Conclusions Spatiotemporal tolerance was observed among mesopredator omnivores and prey herbivores. High temporal overlap of ocelots and potential prey (lowland paca) was observed compared to other tropical forests holding large-sized predators, suggesting behavioral shifts for increasing mesopredator–prey encounters. Furthermore, mesopredator coexistence was mediated by a displacement in the temporal peaks of activity and spatial segregation among species. Implications for Conservation Defaunated tropical forests need protection to ensure the conservation of remaining species and their ecological interactions.