Lemurs have sharp-clawed prehensile feet, which they use to hold on to tree branches. [7], Mouse lemurs are omnivorous, and favor fruit and insects for the bulk of their diet. Address: 3705 Erwin Road, Durham, NC 27705Phone: (919) 401-7240, Overview: Madagascar Conservation Programs. [17], Researchers have identified differences in the tooth morphology of the first and second molars between the gray mouse lemur and the reddish-gray mouse lemur. Like the fat-tailed dwarf lemur, the gray mouse lemur usually undergoes a season of torpor during Madagascar’s dry season (April/May to September/October). They may use three to nine different tree holes within their home range, yet individuals may use one particular hole for up to five consecutive days. In addition, mouse lemur breeding at DLC follows Species Survival Plan guidelines for preserving genetic diversity.

(2006). It exhibits a form of dormancy called torpor during the cool, dry winter months, and in some cases undergoes seasonal torpor (or hibernation), which is unusual for primates. [18] In terms of its general dentition, the gray mouse lemur shares the same dental formula as all other members of its family, Cheirogaleidae: 2.1.3.32.1.3.3 × 2 = 36[19], This species has 66 chromosomes,[20] closely resembling the karyotype of the dwarf lemurs (genus Cheirogaleus). Even in captivity when environmental limitations are not an issue, mouse lemurs have shown a seasonal dietary preference with a greater protein intake during what would be their more active season. The gray mouse lemur and all other mouse lemurs are considered cryptic species, as they are nearly indistinguishable from each other by appearance. In the wild, mating occurs in mid-September, and infants are born 59 – 62 days later in November. [7][22] Studies have found that the species can spend as much as 40% of its time below 3 m (10 ft), with 70% of its time spent at this level during the end of the dry season, when plant food is limited and insects compose a larger percentage of the diet. In the event of offspring adoption, when a parent dies and a closely related female takes over care, it is believed that this is beneficial to groups with high mortality risk. [36], This unusual ability for a primate to exhibit dormancy, in addition to the diminutive size, has led researchers to speculate that ancestral lemurs, and possibly ancestral primates, may have shared some traits with mouse lemurs.
[22] The gray mouse lemur tends to prefer lower levels of the forest and the understory, where branches and vegetation are dense. This puts strong selective pressure on the choice of nest hole opening diameter and deepness. During play, young males produce early attempts at the trill call, which show high degrees of variability. [41], Because mouse lemurs are cryptic species, and therefore visually indistinguishable, their social calls help individuals select mates of their own species. Less than half the diet consists of insects, with fruit making up a slightly larger fraction. The species is named for its mouse-like size and coloration and is known locally (in Malagasy) as tsidy, koitsiky, titilivaha, pondiky, and vakiandry. Therefore, it is affected more by food availability than by niche partitioning where sympatry occurs.[30]. This includes a good night vision. Recently, non-invasive research on the DLC’s tiniest primates has led to the development of a new Alzheimer’s hypothesis (2017). [1], Its greatest threats are habitat loss from slash-and-burn agriculture and cattle-grazing, as well as live capture for the local pet trade in the northern and southern parts of its range. [9][10] Male home ranges increase threefold during the breeding season.

Lemurs are classified based on their size. This is likely because those with lower body mass are less likely to enter torpor, and therefore expend around 40% more energy than those that do maintain torpor. Its diet consists primarily of fruit, insects, flowers, and nectar. Insects are captured during a rapid dash across the leaf litter and are transported by mouth up into the relative safety of the branches. The ring-tailed lemur is the most common lemur type taken home as pets. The gray mouse lemur is a solitary forager. [22] Other raptors, such as Henst's goshawk and other owls, also prey upon this species. [1] This abundance is not uniform and tends to concentrate in "population nuclei",[9] suggesting that it is difficult to accurately estimate population densities when extrapolating from a small area (from various studies) to a large area. They enjoy the warm temperatures so they find areas of the forest here that offer them tropical temperatures.


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