Funding for this research was provided by:
Thailand Research Fund -- the Royal Golden Jubilee Program (PHD/0029/2557)
Received: 4 October 2018
Accepted: 19 June 2019
First Online: 27 June 2019
Ethics approval and consent to participate
: The permission to enter the study sites and to collect the samples was obtained from the Department of National Parks, Wildlife and Plant Conservation, Thailand.
: Not applicable.
: The authors declare that they have no competing interests.