Long‐distance dispersal by a male sub‐adult tiger in a human‐dominated landscape. Issue 9 (27th September 2022)

• Record Type: Journal Article
• Authors: Hussain, Zehidul; Ghaskadbi, Pallavi; Panchbhai, Pramod; Govekar, Ravikiran; Nigam, Parag; Habib, Bilal
• Is Part Of: Ecology and evolution. Volume 12:Issue 9(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-27
• Subjects: carnivore -- displacement -- habitat fragmentation -- natal area -- telemetry; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.9307
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: Conservation of wide‐ranging species and their movement is a major challenge in an increasingly fragmented world. Long‐distance movement, such as dispersal, is a key factor for the persistence of population, enabling the movement of animals within and between populations. Here, we describe one of the longest dispersal journeys by a sub‐adult male tiger ( Panthera tigris ) through GPS telemetry in Central India. We analyzed movement metrics, directionality, and space use during three behavioral stages of dispersal. We also used the clustering method to identify resting and kill sites ( n = 89). T1‐C1 dispersed a straight‐line distance of 315 km over 225 days, moving an average of 8.38 km/day and covering a cumulative displacement of ~3000 km. Movement rate during post‐dispersal was faster (mean = 0.47 km/h) than during dispersal (mean = 0.38 km/h) and pre‐dispersal (mean = 0.13 km/h), respectively. The overall movement rate during the night (0.44 km/h) was significantly faster than during the day (0.21 km/h). Likewise, during dispersal, the movement was faster (mean = 0.52 km/h) at night than day (0.24 km/h). The average size of clusters, signifying resting and kill sites, was 1.68 ha and primarily away from human habitation (mean = 1.89 km). The individual crossed roads faster (mean = 2.00 km/h) than it traveled during other times. During the post‐dispersal phase, T1‐C1 had a space use of 319.48 km 2 (95% dBBMM) in the Dnyanganga Wildlife Sanctuary. The dispersal event highlights the long‐distance and multiscale movement behavior in a heterogeneous landscape. Moreover, small forest patches play a key role in maintaining large carnivore connectivity while dispersing through a human‐dominated landscape. Our study underlines how documenting the long‐distance movement and integrating it with modern technology can improve conservation management decisions. Abstract : The article is about the longest known dispersal by a sub‐adult tiger in a human‐dominated landscape.