January 30, 2019
Meet the Malaysian Giant Turtle (Orlitia borneensis), also known as the Bornean River Turtle or Malayan Giant Terrapin which belongs to the Geoemydidae family, the largest family of living turtles.
Found in Indonesia and Malaysia, the species is the largest freshwater turtle in Southeast Asia. It is a semi-aquatic species, inhabiting large lakes, swamps, and slow-flowing rivers.
The Malaysian Giant Turtle is one of the 107 species of amphibians and reptiles which have been identified in the Restorasi Ekosistem Riau (RER) area, where it appears to be common in the Serkap and Sangar rivers.
Adult males are distinguishable from females with longer and thicker tails. Source: Shutterstock
The Malaysian Giant Turtle holds an Endangered (EN) conservation status issued by the International Union for Conservation of Nature (IUCN), and is one out of the only four endangered reptiles identified in RER.
This turtle’s carapace (the convex, typically upper-facing part of the shell) is smooth, oval, and blackish or dark brown in colour, and can reach 80cm in length. Meanwhile, its plastron (nearly flat part of the shell, the belly part) is normally pale yellowish brown to off-white in colour.
The Malaysian Giant Turtle can reach a weight of 50 kg. It has large webbed feet which resemble paddles, and long, thick claws. Adult males are distinguishable from females with longer and thicker tails.
The Malaysian Giant Turtle spends most of its time in water, rarely leaving. It is mostly piscivorous, which means it depends on fish as its main food source. However, it may also take in fallen fruit or other available vertebrates.
On many occasions within RER, the Malaysian Giant Turtle has been seen trapped inside fish traps as it tries to take advantage by consuming the trapped fish inside, sometimes damaging the trap itself. When this happens, RER rangers and field staff have to free the Malaysian Giant Turtle from the traps.
The turtle also sometimes has to be released from fishermen’s hooks when it attempts to eat the bait on the hooks and gets trapped.
As with most Asian turtles and tortoises, the Malaysian Giant Turtle digs itself a nest in mud or sand to lay its eggs, leaving the eggs to hatch and the young to fend for themselves against potential predators afterwards. Hatchlings have been found in RER, indicating that the Malaysian Giant Turtle breeds or lays eggs in the area.
Despite being a species which is officially protected under Indonesian law, the Malaysian Giant Turtle remains a species which is exported in large quantities from Indonesia.
The meat of the giant reptile is highly sought after as food, and continued exploitation of the species is rapidly diminishing its population. In Riau, the Orang Asli (indigenous people) hunts the turtle for food, or sells it to Chinese middlemen.