Tragulus javanicus

DISTRIBUTION: Indochina, Thailand, Yunnan (China), Malaysia, Sumatra, Borneo, Java, many adjacent islands.

Sumber: Order Artiodactyla

DISTRIBUTION: Indochina; Thailand; Yunnan (China) (SW); Malaysia; Sumatra; Borneo; Java; many adjacent islands.

Sumber: Order Artiodactyla

Habitat. Preferred habitat of the Javan Chevrotain includes evergreen and semi-evergreen rainforest. The species has been reported in the drier semi-deciduous forests of eastern Java, butit seems to be rarer there than in the wetter forests of central and west Java. One habitat-use study suggested that 7. javanicus uses dense bushes and stands of Salacca zalacca palms during the day. It generally remains not far from rivers. This suggests that chevrotains there might be an “ edge ” species, apparently preferring areas with thick understory vegetation, such as that along riverbanks. This would not be unusual within the genus (see other Tragulus accounts). The species occurs from sea level to about 1600 m above sea level in the mountains.

Sumber: Tragulidae

Movements, Home range and Social organization. Nothing known.

Sumber: Tragulidae

Status and Conservation. The account of 7. javanicus on The IUCN Red List states that the speciesis classified as Data Deficient, partly reflecting the lack of clarity over how many species of chevrotain occur onJava and therefore how much of the available information about the genus refers to 1. javanicus. The authors mention that there are fair indications of a decline, perhaps a major one, and a category such as Vulnerable is quite likely to be applicable. The species is hunted for meat and is also often sold as a pet, for example in markets in West Java. In the 1920 s it was reported that the species was commonly trapped using snares, but no recent information on this is available. Dedicated field investigations (throughoutJava) ofstatus are urgently warranted, and the Red List status of the species should be reviewed regularly in light of current uncertainty and concerns.

Sumber: Tragulidae

Descriptive notes. Head-body 50 - 53 cm, tail 4 - 6 cm; weight 1.7 - 2. 1 kg. Compared to 1. kanchil, T: javanicus is distinguished by its narrow auditory bullae, narrow braincase, and longer and higher mandibles. Compared with 7. kanchil from nearby Sumatra, the rostrum is shorter and the auditory bullae are narrower. Two different taxa of chevrotain have been described from Java, a gray-necked form and a red-necked form. The gray-necked form was distinguished from all other 7. javanicuslike chevrotains by the great width and distinctness of the tawny superciliary stripes and by the grizzled gray neck, which is strikingly contrasted with the tawny body and head; in addition, the nape stripe is absent, although the dark crown sometimesslightly extends onto the nape. The red-necked form, described on the basis of five specimens in the Zoological Museum of the Humboldt University in Berlin, has an orange-brown ground color, slightly grizzled with black. All five specimens had a clear, almost black, nape stripe. The cheeks and the sides of the neck are orange-buff, as opposed to the gray in the gray-necked form. This species was described as having a remarkably long tongue, which “ it brings with ease to behind its ears, ” but presumably this is a generic rather than species-specific characteristic. Dental formulais 10 / 3; C 1 / 1; P 3 / 3; M 3 / 3 (x 2) = 34.

Sumber: Tragulidae