Picture of loss
Researchers are analyzing the DNA from seized elephant tusks to better understand how ivory cartels operate. Conservation biologist Samuel Wasser, a professor of biology at the University of Washington, and his team developed a process to locate tusk pairs. Here, pairs of tusks from a 2015 ivory seizure in Singapore have been paired and laid out.
[Read more about how the ivory cartels operate]
A tender moment
At Amboseli National Park in Kenya, two African elephants intertwine their trunks.
Inspection
Elephants use their trunks to examine a fellow African elephant's bone.
Detectives' connection
Wasser's process to identify and pair tusks from poached elephants uses DNA testing to match the pairs smuggled in separate shipments to the same smugglers. The maps indicate different deliveries — showing location, date and weight of the seizure. Using the process, geographic origins of the tusks are determined, as noted by the blue circles. Using open red circles, some of the recovered tusks have been matched to a number of poached elephant corpses. Connection of tusk pairs are notated by double-headed arrows.
Evidence of crime
A 2012 ivory seizure in Malaysia yielded these tusks.
Scrutiny in action
Wasser and his team conduct a forensic analysis on ivory to determine the origins of 4.6 tons of ivory seized in Singapore in 2015. The containers were being shipped from Mombasa, Kenya, to Vietnam.
Gathering samples
Standing to the left, Wasser works with his team to collect samples of tusks from the 2014 seizure in Malaysia.
Read more about how the ivory cartels operate]
Searching for DNA
The process developed by Wasser and his team came from a need to collect DNA from ivory without the genetic material degrading. First the tusk sample is frozen in liquid nitrogen. Then tiny magnets crush the frozen sample, allowing the DNA to remain intact. Here, a staff member processes a piece of ivory.
The leader
In Kenya in April 2016, thousands of tusks were burned; some of these captured pieces were sampled by Samuel Wasser, seen here, and his team for forensic analysis.
Following the animals
At Zakouma National Park in Chad, a ranger examines the wildlife tracking system.
Brave defenders
Zakouma National Park's rangers pose for a photo.
