Red-eared slider turtle

Alert

Be on the lookout for red-eared slider turtles and report any sightings immediately.

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Native to the United States, the red-eared slider turtle is a freshwater turtle with a distinctive red strip behind each eye. These turtles are very aggressive and will outcompete native species for food and space.

The International Union for Conservation of Nature lists the red-eared slider turtle as one of the world's 100 worst invasive alien species. In Queensland, this species is a category 2, 3, 4, 5 and 6 restricted invasive animal under the Biosecurity Act 2014.

Red-eared slider turtles have been distributed through the illegal pet trade, and wild populations have now established on every continent except Antarctica. Due to the species' aggression, illegal pet owners may release turtles into local creeks and waterways.

In the mid 2000s, red-eared slider turtles were found established in the wild in an isolated area of South East Queensland. Initially it was believed that this population was eradicated.

Scientific name

Trachemys scripta elegans

Similar species

  • Yellow-bellied slider turtle (Trachemys scripta) and Cumberland slider turtle (Trachemys troostii), both of which have a yellow instead of red band behind each eye

Description

  • This freshwater turtle grows up to 30cm long.
  • Their eyes have distinctive red strips behind them.
  • Their heads can retract into their shells (unlike native turtles).
  • Mature turtles are aggressive and bite.
  • The pet trade has developed colour morphs of red-eared slider turtles:
    • ‘Pastel’ turtles have a lighter colour with varying amounts of red and yellow.
    • ‘Albino’ turtles have bright yellow as juveniles with colour fading as the turtle ages.
    • ‘Melanistic’ turtles have little to no colouration including no red strip.

3D model

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Habitat

  • Red-eared slider turtles are very adaptable to Australian waterways.
  • They can move up to 9km from water to find suitable habitat, search for a mate or lay eggs. Nests are dug well above water level, usually within 500m of water but sometimes up to 1.6km away.

Distribution

  • The species has been found in the wild in South East Queensland.
  • Known populations are thought to have been eradicated.

Life cycle

  • Turtles are sexually mature at 2–5 years of age.
  • A female can lay up to 70 eggs per year and can produce viable eggs for up to 5 years after mating.
  • Their maximum life span is generally 20–30 years.

Affected animals

  • Native species including native turtles

Impacts

Environmental

  • Affect a range of aquatic prey, including rare amphibians.
  • Can take over waterbird nests for basking sites, and damage and prey on eggs and hatchlings.
  • Outcompete native turtle species for food and space in waterways.
  • Carry pathogens and diseases that can kill native turtles and other aquatic wildlife.

Social

  • Captive red-eared slider turtles have been a source of salmonella infection in humans in the United States.

Natural enemies

  • Very few natural predators in Australia.

Control

Legal requirements

  • The red-eared slider turtle is a category 2, 3, 4, 5 and 6 restricted invasive animal under the Biosecurity Act 2014 . You must not:
    • move it
    • keep it
    • feed it
    • give it away
    • sell it
    • release it into the environment.
  • If you do any of these, penalties may apply.

  • You must take all reasonable and practical measures that are under your control to minimise the biosecurity risks associated with dealing with red-eared slider turtles. This is part of your general biosecurity obligation .
  • You must report any sightings immediately using 1 of these methods:
  • Each local government must have a biosecurity plan that covers invasive animals in its area. This plan may include actions to be taken for red-eared slider turtles. Some of these actions may be required under local laws. Contact your local government for more information.

Further information