Common Brown Lemur

Taxobox
name = Common Brown LemurMSW3 Groves | pages = 115| id=12100040]

---

status = NT
status_system = iucn3.1
status_ref = IUCN2008 | assessors = Andrainarivo, C., et al | year = 2008 | id = 8207 | title = Eulemur fulvus | downloaded = 07 October 2008 Listed as Near Threatened (NT v3.1)]
regnum = Animalia
phylum = Chordata
classis = Mammalia
ordo = Primates
familia = Lemuridae
genus = "Eulemur"
species = "E. fulvus"
binomial = "Eulemur fulvus"
binomial_authority = É. Geoffroy, 1796

The Common Brown Lemur ("Eulemur fulvus") is a species of lemur in the Lemuridae family. It is found in Madagascar and Mayotte.

Range

The Common Brown Lemur lives in western Madagascar north of the Betsiboka River and eastern Madagascar between the Mangoro River and Tsaratanana, as well as in inland Madagascar connecting the eastern and western ranges.cite book|title=Lemurs of Madagascar|edition=Second Edition|author=Russell Mittermeier et al|page=272-274|year=2006|isbn=1-881173-88-7] They also live on the island of Mayotte, although this population is believed to have been introduced there by man.

Physical description

The Common Brown Lemur has a total length of 84 to 101 centimeters, including 41 to 51 centimeters of tail.cite book|title=Mammals of Madagascar|author=Nick Garbutt|page=155-156|year=2007|isbn=978-0-300-12550-4] Weight ranges from 2 to 3 kilograms. The short, dense fur is primarily brown or grey-brown. The face, muzzle and crown are dark grey or black with paler eyebrow patches, and the eyes are orange-red.

Similar lemur species within their range include the Mongoose Lemur, "E. mongoz", in the west and the Red-bellied Lemur, "E. rubriventer", in the east. They can be distinguished from these species by the fact that "E. mongoz" is more of a grey color and "E. rubriventer" is more reddish. There is also some overlap with the Black Lemur in northeast Madagascar in the Galoko, Manongarivo and Tsaratanana Massifs.cite book|title=Lemurs of Madagascar|edition=Second Edition|author=Russell Mittermeier et al|page=288|year=2006|isbn=1-881173-88-7] There is also overlap and hybridization with the White-fronted Brown Lemur, "E. albifrons", in the northeast portion of the Common Brown Lemur's range.cite book|title=Lemurs of Madagascar|edition=Second Edition|author=Russell Mittermeier et al|page=282|year=2006|isbn=1-881173-88-7]

Diet

The Common Brown Lemur's diet consists primarily of fruits, young leaves, and flowers. In some locations it eats invertebrates, such as cicadas, spiders and millipedes.cite book|title=The Pictorial Guide to the Living Primates|author=Noel Rowe|page=40|year=1996|isbn=0-9648825-0-7] It also eats bark, sap, soil and red clay (see geophagy). It can tolerate greater levels of toxic compounds from plants than other prosimians can.

Behavior

Consistent with its large range, the Common Brown Lemur occupies a variety of forest types, including lowland rainforests, montane rainforests, moist evergreen forests and dry deciduous forests. They spend about 95% of their time in upper layers of the forest and less than 2% of their time on the ground.

They normally live in groups of 5 to 12, but group size can be larger, especially on Mayotte. Groups occupy home ranges of 1 to 9 hectares in the west, but more than 20 hectares in the east.cite book|title=Primates in Perspective | chapter = Lemuriformes | author = Lisa Gould and Michelle Sauther | editor = Christina J. Campbell, Agustin Fuentes, Katherine C. MacKinnon, Melissa Panger and Simon K. Bearder|year=2007|page=53|isbn=978-0-19-517133-4] Groups include members of both sexes, including juveniles, and there are no discernable dominance hierarchies.

They are primarily active during the day, but activity can continue into the night, especially during full moons and during the dry season.cite book|title=Primate Ecology and Social Structure Volume 1: Lorises, Lemurs and Tarsiers|author=Robert W. Sussman|page=186-187|year=1999|isbn=0-536-02256-9]

In the western part of its range, the Common Brown Lemur overlaps that of the Mongoose Lemur, and the two species sometimes travel together. In the areas of overlap, the two species also adapt their activity patterns to avoid conflict. For example, the Mongoose Lemur can become primarily nocturnal during the dry season in the areas of overlap.

Reproduction

The Common Brown Lemur's mating season is May and June. After a gestation period of about 120 days, the young are born in September and October. Single births are most common, but twins have been reported. The young are weaned after about 4 to 5 months. Sexual maturity occurs at about 18 months, and females give birth to their first young at 2 years old. Life span can be as long as 30+ years.

Taxonomy

Five additional currently recognized species of lemur were until 2001 considered subspecies of "E. fulvus".cite book|title=Lemurs of Madagascar|edition=Second Edition|author=Russell Mittermeier et al|page=251|year=2006|isbn=1-881173-88-7] These are:

*White-fronted Brown Lemur, "E. albifrons"
*White-collared Brown Lemur, "E. albocollaris"
*Collared Brown Lemur, "E. collaris"
*Red-fronted Brown Lemur, "E. rufus"
*Sanford's Brown Lemur, "E. sanfordi"

However, a number of zoologists believe that "E. albifrons" and "E. rufus" should continue to be considered subspecies of "E. fulvus".

References