Malayemys subtrijuga, Mekong snail-eating turtle, Geoemydidae

Malayemys subtrijuga, Mekong snail-eating turtle, Geoemydidae

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The Mekong snail-eating turtle (Malayemys subtrijuga) is a species of turtle in the Geoemydidae family. It was monotypic within the genus Malayemys until Brophy (2004, 2005)[4] revalidated (based on morphology) Malayemys macrocephala (Gray, 1859) long time considered to be a synonym of M. subtrijuga.

Distribution

The Mekong snail-eating turtle is found in the Mekong River basin of Cambodia, Laos, southern Vietnam and northeastern Thailand.[1][2] Introduced in Java, Indonesia.[1] The occurrence of the species in Indonesia is regarded by Brophy (2005) to be allochtonous i.e. non native (Sumatra) or extinct (Java)

Emydura subglobosa, Red-bellied short-necked turtle, Jardine River turtle

Emydura subglobosa, Red-bellied short-necked turtle, Jardine River turtle 

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The Red-bellied short-necked turtle or Jardine River turtle (Emydura subglobosa) is a species of turtle in the Chelidae family. It is found in Australia and Papua New Guinea. It is a endangered species of Australia. Majority of the time it is around shallow, muddy areas of water. Its cranial anatomy, embryogenesis, and skeletogenesis are well known.

Elseya novaeguineae, New Guinea snapping turtle

Elseya novaeguineae, New Guinea snapping turtle 

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The New Guinea snapping turtle (Elseya novaeguineae) is a species of turtle in the Chelidae family. It is found in Indonesia and Papua New Guinea.

This species was recently moved from Elseya to Myuchelys by Georges and Thomson (2010)[3] however this was later deemed in error by the authors and was argued against by Rhodin et al., (2010)[4] with the support of the authors. Hence it has been returned to the Elseya.

Dogania subplana, Malayan softshell turtle

Dogania subplana, Malayan softshell turtle

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he Malayan softshell turtle (Dogania subplana) is a species of softshell turtle in the Trionychidae family. It is monotypical of its genus.

It is found in Borneo, Brunei, Indonesia, Java, Kalimantan, Malaysia, Myanmar, the Philippines, Sabah, Sarawak, Singapore, and Sumatra.

Description

Adults may attain a carapace length of 35 cm (13¾ inches).

The head is large and muscular. The carapace is flat, and has straight sides. Juveniles are reddish on the sides of the neck, and have a few round black spots (ocelli) on the carapace. These markings become obscure as the turtles age.

This turtle is a medium to dark brown-green. The nose is long and tapered as with members of the family, Trionychidae. It has eight pairs of pleuralia.

Habitat

Dogania subplana prefers to live in the clean running water which is found in rocky streams at higher elevations.

Diet

It feeds on snails and other molluscs, crushing their shells with its powerful jaws

Chelodina reimanni, Reimann’s snake-necked turtle

Chelodina reimanni, Reimann’s snake-necked turtle 

Chelodina-reimanni

The Reimann’s snake-necked turtle (Chelodina reimanni) is a species of turtle in the Chelidae family. It is found in Indonesia and possibly Papua New Guinea. Pictures of the turtle consistently denote a smiling face.

Chelodina novaeguineae, New Guinea snake-necked turtle

Chelodina novaeguineae, New Guinea snake-necked turtle 

Chelodina-novaeguineae

The New Guinea snake-necked turtle (Chelodina novaeguineae) is a species of turtle in the Chelidae family. It is found in northeastern Australia, Indonesia, Papua New Guinea, and adjacent islands.

Habitat

Small and large freshwater bodies of water, jungle rivers with ample vegetation.

Characteristics

Carapace dark brown, almost black, but shows some variation from “normal” turtle patterns. The plastron is a light brown, tan color. Long neck and (including head) can sometimes exceed the length of the carapace. Skin mostly gray, has a black head and white on under parts of the skin.

Behavior

When resting, this turtle twists its long neck off to the side for protection. The highly flexible neck permits foraging in mud as well as snorkeling. It also allows the turtle to strike quickly to capture prey.

Reproduction

The snake-neck turtle is oviparous. 17-21 eggs are laid and incubation lasts 75–110 days depending on temperature.

Chelodina mccordi, Roti Island snake-necked turtle

Chelodina mccordi, Roti Island snake-necked turtle 

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The Roti Island snake-necked turtle (Chelodina mccordi) is an extremely threatened turtle species from Rote Island south west of Timor between New Guinea and Australia. It belongs to the genus Chelodina (Australian snake-necked turtles) within the family of Side-necked turtles (Chelidae)

Description

The Roti Island snake-necked turtle was split from the New Guinea snake-necked turtle and regarded as distinct species in 1994 after Dr. Anders Rhodin, director of the Chelonian Research Foundation in Lunenburg (Massachusetts), found out that there are differences between the two species. The first snake-necked turtles on Roti Island were discovered in 1891 by George Albert Boulenger. They were named for Dr. William McCord, a veterinary and turtle expert from Hopewell Junction, New York.

The carapace can reach a length between 18 and 24 centimetres. The length of the neck is similar. The color of the carapace is pale grey brown. Occasionally there are also specimens which have a chestnut coloured hue. The plastron is pale buff white. The neck is dark brown on the upperparts with round tubercles. The underparts are beige white. The iris is black surrounded by a white ring. Its habitat are swamps, rice terraces, and small lakes.

Reproduction

A clutch can consist of eight to fourteen eggs and it can have three breeding periods in one year. The size of the eggs is 30 x 20 mm and the weight can reach eight to ten grams. The first hatchlings come after three months, the last after four months. When they hatch they have a size of 28 x 20 mm and they have yellow spots on the plastron which become darker with the time until the plastron becomes almost black after a few weeks. During the growing period the coloring becomes more pale until they finally reach the color of the adults.

Threats

The Roti Island Snake-necked Turtle is one of the most desired turtles in the international pet trade. Even before it was scientifically described it was so over-collected that the legal trade was prohibited in 2001 due to its rarity. The two or three remaining populations live in an area of only 70 km² in the central highlands of Roti Island. It is still illegally captured and it is often offered on markets under the label of the New Guinea Snake-necked Turtle which is also legally protected. In 2004 it was listed in Appendix II of CITES.

Outside of capture by humans there are few natural threats to this species. There are some reports of predation by feral pigs (Sus Scrofa)[2] and loss of habitat, however illegal capture and trade remains the primary threat.