Affiliation:
1. University of the Sunshine Coast
2. Panthera
3. Bornean Sun bear Conservation Centre
4. Sabah Wildlife Department
Abstract
Abstract
As the number of threatened wildlife species increases globally, captive rehabilitation and release of wild caught animals plays an increasingly significant role in conservation efforts, particularly where poaching threatens wild populations. Sun bear (Helarctos malayanus) populations are decreasing globally, with habitat loss and fragmentation and poaching as key threats to the species. This study aimed to assess post-release behaviour of rehabilitated Sun bears (n = 12) using GPS-collar data to inform ongoing efforts to rehabilitate wild caught bears. We assessed spatial patterns of movement using kernel density estimates and utilisation distributions. We utilised an information theory (IT) and generalised linear modelling approach to assess temporal patterns of sun bear movement (n = 9). Home range estimates (mean = 56.68 km2, range:1.9 – 202.4) and post-release behaviour varied widely between bears, with no significant difference in home range size between males (n = 3) and females (n = 6). Home ranges of most bears stabilised within the first month and bears that were rehabilitated and released together did not spend a significant amount of time together following release. Bears were most active during daytime hours and most established a home range encompassing the riverside. The ultimate success of the releases is unknown, due to collar malfunction and damage, and the inaccessibility of the study terrain. We find that future releases of Sun bears would benefit from soft-release and in-situ rehabilitation techniques. This study provides important insights into the complexity of bear reintroductions informing future rehabilitation and releases for threatened bear species.
Publisher
Research Square Platform LLC
Reference30 articles.
1. Factors influencing the adaptability and habitat use of rescued Malayan sun bears (Helarctos malayanus) released in Peninsular Malaysia;Abidin KZ;Wildl Res,2023
2. Akaike H (1973) Information theory as an extension of the maximum likelihood principle. In: Second International Symposium on Information Theory (eds B. N. Petrov and F. Csaki) pp. 267 – 81. Akademiai Kaido
3. Anderson DR, Burnham KP, Gould WR, Cherry S (2001) Concerns about Finding Effects That Are Actually Spurious. Wildlife Society Bulletin (1973–2006) 29, 311-6
4. Management implications for releasing orphaned, captive-reared bears back to the wild;Beecham JJ;J Wildl Manag,2015
5. Burnham KP, Anderson DR (2002) Model selection and multimodel inference. Springer, New York