Haeromys minahassae

DISTRIBUTION: Sulawesi; recorded only from the NE peninsula and central core (Musser, 1990).

Sumber: Order Rodentia - Family Muridae

DISTRIBUTION: Sulawesi Utara (Sulawesi).

Sumber: Order Rodentia (Part 5)

Habitat. Natural habitat of Sulawesi lowlands and hill zone is evergreen tropical lowland rainforest. Vicinity of Rurukan has long supported a mosaic of agriculturalfields and remnant forest. Lowland rainforest habitat of the Lowland Sulawesi Ranee Mouse in forested slopes above Kuala Navusu (at 75 - 150 m) in central Sulawesi was described and illustrated by Musser and M. Dagosto in 1987.

Sumber: Muridae

Movements, Home range and Social organization. No information.

Sumber: Muridae

Status and Conservation. Classified as Vulnerable on The IUCN Red List. A recent survey of habitat condition in Sulawesi found that more than 80 % of original lowland rainforest has been converted for subsistence agriculture and plantations, with less than 3 % of the especially biodiverse alluvial forests remaining. Forestry and other forms of disturbance have heavily impacted much of remaining forest cover at low elevations, and this has no doubt resulted in fragmentation of remaining populations.

Sumber: Muridae

Descriptive notes. Head — body 70 - 78 mm, tail 120 - 131 mm, ear 15 - 16 mm, hindfoot 19 - 21 mm; weight 12 - 15 g. The Lowland Sulawesi Ranee Mouse is the smallest native rodent on Sulawesi. It has a broad head with short snout and moderately large eyes. Body proportions are unexceptional, but tail is long and slender, rather whiplike in appearance. Fur on upperparts is soft, long, and dense, lacking distinct spines. Color described in 1896 by Thomas as “ rufous, duller on the back, brighter on the sides. Under surface white, bases of the hairs gray; line of demarcation on sides wellmarked. ” Underside is pure white to roots in specimens from central Sulawesi. Ears are moderately large, rounded, and with dark pigmented skin. Lower part of forelimb, wrist, and forefoot white. Lower hindlimbs and upper surface of hindfeet brown apart from digits, where skin and hairs are white. Forefeet with nail on first digit, and “ short, sharp, curved claws ” on remaining digits. Hindfeet are moderately elongate but broad, with plantar pads “ six in number as usual, not striated, the posterior one elongate. ” First digit moderately long, reaching to base of second digit, and with a minute claw rather than a nail; remaining digits all with short, curved claws. Tail is long and slender (160 - 180 % of head-body length), and brown above and below; basal portion oftail is thinly furred, but remainder finely haired, almost naked in appearance, and with very small scales, averaging c. 23 - 25 rows / cm. Cranium has globular braincase, with very short, narrow rostrum and delicate zygomatic arches. Three molars are present in each series, all very reduced but with cuspidate crown morphology. Mammae three on each side, one post-axillary and two inguinal. Autosomal complement includes 21 pairs of acrocentric chromosomes in graded series from large to small, and two pairs of small metacentric. Presumed X chromosomeis a large submetacentric, and presumed Y chromosome a medium-sized acrocentric. Spermatozoa with moderately long tail (115 pm), and relatively short (9 - 5 pm) sperm head with broad lateral face (4 pm) and single short (4 pm) apical hook; an unusual feature is a small ventral spike, locatedjust above connecting piece of sperm tail. Chromosomal complement has 2 n = 48, FN = 54.

Sumber: Muridae