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Predicting preferred prey of Sumatran tigers Panthera tigris sumatrae via spatio-temporal overlap
- Source :
- Oryx. 55:197-203
- Publication Year :
- 2020
- Publisher :
- Cambridge University Press (CUP), 2020.
-
Abstract
- Encounter rates of carnivores with prey are dependent on spatial and temporal overlap, and are often highest with their preferred prey. The Critically Endangered Sumatran tiger Panthera tigris sumatrae is dependent on prey populations, but little is known about its prey preferences. We collected camera-trap data for 7 years (2010–2016) in Bukit Barisan Selatan National Park, Sumatra, to investigate spatial and temporal overlap of tigers with potential prey species. We also developed a novel method to predict predator–prey encounter rates and potential prey preferences from camera-trap data. We documented at least 10 individual tigers, with an overall detection rate of 0.24 detections/100 trap nights. Tigers exhibited a diurnal activity pattern and had highest temporal overlap with wild boar Sus scrofa and pig-tailed macaques Macaca nemestrina, but highest spatial overlap with wild boar and sambar deer Rusa unicolor. We created a spatial and temporal composite score and three additional composite scores with adjustments for the spatial overlap and preferred prey mass. Wild boars ranked highest for all composite scores, followed by sambar deer, and both are known as preferred tiger prey in other areas. Spatial and temporal overlaps are often considered as separate indices, but a composite score may facilitate better predictions of encounter rates and potential prey preferences. Our findings suggest that prey management efforts in this area should focus on wild boar and sambar deer, to ensure a robust prey base for this Critically Endangered tiger population.
- Subjects :
- 0106 biological sciences
Sambar deer
udc:59
Population
Zoology
Panthera tigris sumatrae
010603 evolutionary biology
01 natural sciences
Predation
Critically endangered
prehrana
Sumatran tiger
tiger
biology.animal
education
Ecology, Evolution, Behavior and Systematics
Rusa
Nature and Landscape Conservation
education.field_of_study
biology
Tiger
010604 marine biology & hydrobiology
Sumatra
Sumatran tigers
Panthera tigris
biology.organism_classification
preferred prey
izbira plena
Panthera
Subjects
Details
- ISSN :
- 13653008 and 00306053
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Oryx
- Accession number :
- edsair.doi.dedup.....6d3a5aa4eeb9463bc9f00b6e2247ea88
- Full Text :
- https://doi.org/10.1017/s0030605319000577