Tags to track and preserve Mary River turtles
Researchers from Charles Darwin University (CDU) are trying to find a solution to help recover the Mary River turtle population by tracking their movements with an acoustic device.
Dr Mariana Campbell from CDU’s Research Institute for the Environment and Livelihoods have undertaken a field exercise in Queensland, where they installed small acoustic devices on turtles released into the water.
Each device contains a unique code that changes once activated by the enzyme in the predator’s stomach if the turtle gets eaten.
She suspects that most of the turtles are predated by oversized catfish native to the Mary River, and the population of freshwater turtles are almost depleted.
“Through our research, we hope to find out the culprit for this population decline and a solution to preserve the population,” Dr Mariana Campbell said.
“Freshwater turtles don’t get as much attention as sea turtles, maybe because they are not as charismatic and are not well studied,” she said.
“We hope to develop a solution to help recover the freshwater turtle population, which can be applied to other species in Australia and around the world.”
The research is a collaboration between CDU, SunWater water authority and the local community group Tiaro & District Landcare Group, and is a long-term collaboration with local conservation groups and the community.
In the 1960s and 70s, there was extensive egg collection of the Mary River turtles for the pet trade, causing the population to decline rapidly.
There is a local nest protection program that aims to preserve the number of turtles, but Dr Campbell’s research suggests the hatchlings have low survival rates once in the water.
“We are trying to figure out what is happening to the turtles once they are in the water, also which head-starting program is more viable,” Dr Mariana Campbell said.
In a recent field trip, Dr Campbell released a batch of 15-month-old turtles to Mary River and continued monitoring their movements through the tag.
An array of listening devices has been installed underwater to actively track the turtles’ locations. If a turtle gets eaten by a catfish, the catfish can be tracked down and caught if needed.
Dr Campbell plans to release another batch that tests the viability of the head-starting program, which involves keeping the turtle hatchlings in captivity until they reach a certain age.
The research will help us understand the diminishing Mary River turtle population and find ways to revive the species.
Related Articles
How ants are cashing in on the fight against money laundering
An AI model inspired by ants, bees, and birds could be the key to cracking down on blockchain-based money laundering, new research led by Charles Darwin University (CDU) has found.
Read more about How ants are cashing in on the fight against money laundering
‘Ecological engineers’ an existential threat to wildlife of iconic wetland
A study examining how feral water buffalo interact with landscapes has uncovered how the pest is having disastrous impacts on northern long-necked turtles in the Top End’s tropical wetlands.
Read more about ‘Ecological engineers’ an existential threat to wildlife of iconic wetland
Indigenous people want violence out of their communities. Here’s a new approach
Read more about Indigenous people want violence out of their communities. Here’s a new approachElders say there are many drivers of community violence and unrest that go unaddressed by typical law and order responses. Here’s what they’re doing instead.
