Received: 2 July 2019 | Accepted: 4 September 2019 DOI: 10.1111/1365-2664.13514 RESEARCH ARTICLE Do introduced apex predators suppress introduced mesopredators? A multiscale spatiotemporal study of dingoes and feral cats in Australia suggests not Bronwyn A. Fancourt1,2 | Peter Cremasco1 | Cameron Wilson1 | Matthew N. Gentle1 1Pest Animal Research Centre, Department of Agriculture and Fisheries, Biosecurity Abstract Queensland, Toowoomba, Qld, Australia 1. The role of apex predators in structuring ecosystems through the suppression 2 School of Environmental and Rural of mesopredator activity and abundance is receiving increasing attention, largely Science, University of New England, Armidale, NSW, Australia due to the potential benefits for biodiversity conservation. In Australia, invasive mesopredators such as feral cats (Felis catus) have been identified as major con- Correspondence Bronwyn A. Fancourt tributors to Australia's mass mammal extinctions since European arrival. The in- Email:
[email protected] troduced dingo (Canis familiaris) has been proposed as a novel way to suppress the Present address impacts of feral cats, however, scientific evidence of the dingo's suppressive role Bronwyn A. Fancourt, Vertebrate Pest is equivocal. Research Unit, NSW Department of Planning, Industry and Environment, 2. We used camera traps to investigate whether a large introduced predator (dingo) Armidale, NSW, Australia suppresses the activity of an established introduced mesopredator (feral cat) Funding information across a national park site conserving endangered species, and an agricultural site Queensland Government Feral Pest supporting cattle grazing enterprises. Initiative 3. Feral cats and dingoes exhibited marked overlap in both temporal and spatial ac- Handling Editor: Matt Hayward tivity, indicating coexistence. Some temporal separation was evident at the ag- ricultural site, however, this reflected higher diurnal activity by dingoes, not a responsive shift in cat activity.