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01 February 2011

Success!

Collared Dhole

Our first collared dhole!  Click here for more pictures.


I have been trying to capture a dhole (Asiatic wild dog) for attachment of a GPS tracking collar for over 5 years.  What a technical, time consuming, and complex undertaking.  There was the original set up of our project, finding a suitable location with a knowledgeable field staff, then a delay of a year simply to obtain research permits for Khao Ang Rue Nai Wildlife Sanctuary, in south central Thailand.  Several grant proposals were required along the way to fund equipment and cameras.   First, we had to locate a dhole pack.  This meant long heat-filled days of trudging through the forest to check our cameras and get a sense of where wildlife was moving.  It is expensive to send manufactured live traps to Thailand, so instead we scoured markets looking for local materials and designed our own box traps.  Those traps had to sit out in the forest to lose human scent before cautions animals would venture close.  And if you do catch an animal, what next?  Of course you have to have an on-call skilled veterinarian ready because dholes are very susceptible to stress and overheating.  It is not so easy to fund and schedule a vet to stay in an isolated field site.  So, after delays and mishaps and years of groundwork, this time we were ready.  And we weren’t leaving anything to chance.  We prepared for various situations.  If it could improve our odds, I would consider it.

This led our team to visit the sanctuary spirit house.  We were informed by the local staff that we should first ask permission from the forest spirits before attempting to catch dholes.  My adviser, Nuch, performed the offering of incense and promised two pig heads if we were successful.

Just days into our trapping, during an early morning site check, we heard whining….a canid.  But, nope, no dhole…an Asiatic jackal.  Good, at least the traps were working.  At the end of the day, the staff joked that perhaps the spirits were confused.  Why did they send the wrong animal?  Did we need to bring a photograph to the spirit house?  See…THIS is what we want…a dhole is RED.  The RED one!

As it turned out, a few days later, on January 26th, it was indeed a dhole in the trap.  My assistant named the male “Suriya” which roughly translates as the time period of mid-morning.  Based on his teeth, Suriya is five to six years old.  We fitted him with a GSM/GPS collar.  This collar records his location on a set schedule and stores the GPS locations in the collar.  When Suriya ventures within range of a cell-phone tower, the data is sent directly to me.  I can monitor him from back at my desk in the U.S.

And we immediately made good on our promise of the pig heads.
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31 July 2010

Where are the Dogs?

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 We have started fitting domestic dogs from surrounding villages with passive GPS tracking devices.  We plan to document their movements into Khao Ang Rue Nai Wildlife Sanctuary (KARN) and eventually determine the proportion of overlap in the home ranges of dogs and dholes.  This will help us perform an analysis of disease transmission risk.  My terrific field assistant, LungDaeng, is in charge of collar deployment and download while I am back at UMass for the fall semester.  He has never used a computer before, so teaching him to download and save a GPS file was an adventure in patience.  The key was for him to write the directions in his own words, step-by-step.  

Testing of collars in July showed active dogs that roam across the main sanctuary road.  The yellow lines on the above map show the path of a 10 year old female from 10-23 July, 2010.  The main road 304 of the sanctuary is visible west to east in white.  The red line delineates the boundary of KARN.  Forest to the west of the line is inside the sanctuary.
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23 June 2010

Where are the Dholes?

We have been camera trapping in Khao Ang Rue Nai Wildlife Sanctuary, Thailand for over two and a half years.  From 30 January 2008 through 20 June 2010, cameras placed at 276 locations totaled 5,794 trap nights.  (The below maps shows where we set up cameras and where we photographed dholes).  Camera trap surveys resulted in a total of 2,541 wildlife photos. Sixteen carnivore species were caught on camera.  Overall, elephants (n=722), sambar deer (n=241), and Malayan porcupine (n=238) were the most common recorded species.  We targeted camera set up in areas to consistently locate one target dhole pack with six pack members.  Our camera trapping has provided a baseline picture of population distribution, information that is critical for selecting study sties for a detailed ecological study using radio tracking.
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