Six dead dingoes found on Fraser Island showed signs consistent with poisoning before their deaths, preliminary test results show.
The dingoes' carcases, including one that was buried in a shallow grave, have been recovered from around the island's Orchid Beach area since Friday and Queensland Parks and Wildlife Service has launched an investigation into the matter.
National Parks Minister Dr Steven Miles on Wednesday said initial necropsy reports showed all of the animals suffered the same symptoms.
"These symptoms were consistent with 1080 poisoning but we will not know for certain until the toxicology results are received," he said.
"The Queensland Parks and Wildlife Service will pursue all avenues in this investigation to establish just what has happened and who is behind these killings."
Those responsible could face a fine of up to $353,400 or be sent to jail for two years for killing dingoes in a protected area.
The population of Fraser Island dingoes, which holds significant conservation value because they are a genetically-pure stream of native dog, fluctuates seasonally between about 100 and 200 animals.
In Queensland, 1080 bait is used to control wild dogs, feral pigs, rabbits and foxes. However, there is no official baiting program on the island.
