Premium
Spatio‐temporal partitioning among large carnivores in relation to major prey species in W estern G hats
Author(s) -
Ramesh T.,
Kalle R.,
Sankar K.,
Qureshi Q.
Publication year - 2012
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.2012.00908.x
Subject(s) - leopard , tiger , predation , biology , panthera , sympatric speciation , ecology , generalist and specialist species , territoriality , competition (biology) , habitat , zoology , computer security , computer science
Spatio‐temporal partitioning is a viable mechanism for minimizing resource competition among sympatric species. The occurrence of sympatric large carnivores – tiger P anthera tigris , leopard P anthera pardus and dhole C uon alpinus – in forests of the I ndian subcontinent is complemented with high dietary overlap. We characterized temporal and spatial patterns of large carnivores with major prey species using photo‐captures from 50 camera trap stations in M udumalai T iger R eserve, W estern G hats during 2008–2010. We tested whether major prey species' activity and spatial use acted as drivers for coexistence among large carnivores. Tiger exhibited cathemeral activity in the night and is spatially correlated with sambar and gaur, supporting hypotheses related to large‐sized prey. Leopard was active throughout the day and is spatially correlated with almost all prey species with no active separation from tiger. D hole exhibited diurnal activity and spatial use in relation to chital and avoided felids to a certain extent. Leopard exhibited spatial correlation with tiger and dhole, while tiger did not correlate with dhole. Leopard exhibited relatively broader temporal and spatial tolerance due to its generalist nature, which permits opportunistic exploitation of resources. This supports the hypothesis that predators actively used areas at the same time as their principal prey species depending upon their body size and morphological adaptation. We conclude that resource partitioning in large carnivores by activity and spatial use of their principal prey governs spatio‐temporal separation in large carnivores.