Common brown lemur

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Common brown lemur
Common brown lemur (Eulemur fulvus) male.jpg
Male
Common brown lemur (Eulemur fulvus) female with juvenile.jpg
Female with juvenile
both in Peyrieras, Madagascar
CITES Appendix I (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Strepsirrhini
Family: Lemuridae
Genus: Eulemur
Species:
E. fulvus
Binomial name
Eulemur fulvus
Eulemur fulvus range map.svg
Distribution of E. fulvus: [1]
red = native, green = introduced
Synonyms
  • bruneusvan der Hoeven, 1844
  • mayottensisSchlegel, 1866

The common brown lemur (Eulemur fulvus) is a species of lemur in the family Lemuridae. It is found in Madagascar and has been introduced to Mayotte. [1]

Contents

Taxonomy

Five additional currently recognized species of lemur were until 2001 considered subspecies of E. fulvus. [4] :251 These are:

However, a number of zoologists believe that E. albifrons and E. rufus should continue to be considered subspecies of E. fulvus. [4] :251

Physical description

The common brown lemur has a total length of 84 to 101 cm (33 to 40 in), including 41 to 51 cm (16 to 20 in) of tail. [5] Weight ranges from 2 to 3 kg (4.4 to 6.6 lb). [5] Common brown lemurs are unique amongst Eulemur in that they exhibit little-to-no sexual dichromatism: in both males and females, the face, muzzle and crown are dark gray or black, with white or tan "cheeks" of varying thickness. Some individuals may have pale-colored eyebrow patches, and the eyes are almost always a deep orange-red. The short, dense fur of the body is primarily brown or gray-brown, with a lighter gray or tan underside. The fur on the back of their hands is often a medium orange or reddish color, and their long, bushy tail may either be similar in color to the dorsal pelage or, more commonly, a darker shade of gray, black, or brown. [5]

Due to the species' history of containing all fellow brown lemurs as subspecies, they are very commonly misidentified in images and texts, and often confused with other species (such as red-fronted lemurs and gray-headed lemurs) or with various other unrelated hybrids.

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. [5] 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. [4] :288 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. [4] :282

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. [5] They spend about 95% of their time in upper layers of the forest and less than 2% of their time on the ground. [6]

They normally live in groups of 5 to 12, but group size can be larger, especially on Mayotte. [5] Groups occupy home ranges of 1 to 9 hectares in the west, but more than 20 hectares in the east. [7] Groups include members of both sexes, including juveniles, and there are no discernible dominance hierarchies. [5]

They are primarily active during the day, but can exhibit cathemeral activity and continue into the night, especially during full moons [5] and during the dry season. [4] :272–274 [8]

In the western part of its range, the common brown lemur overlaps that of the mongoose lemur, and the two species sometimes travel together. [6] In the areas of overlap, the two species also adapt their activity patterns to avoid conflict. [8] For example, the mongoose lemur can become primarily nocturnal during the dry season in the areas of overlap.

At Berenty (south Madagascar) there is a population of introduced E. fulvus rufus x collaris. [9] These lemurs show linear hierarchy, adult female dominance, and the presence of conciliatory behavior after aggressions. [10] Additionally, stress levels (measured via self-directed behaviors) decrease at the increase of the hierarchical position of individuals within the social group and reconciliation is able to bring stress down to the baseline levels. [11]

Reproduction

The common brown lemur's mating season is May and June. [5] After a gestation period of about 120 days, the young are born in September and October. [5] Single births are most common, but twins have been reported. [5] The young are weaned after about 4 to 5 months. [5] [6] Sexual maturity occurs at about 18 months, [5] and females give birth to their first young at 2 years old. [6] Life span can be as long as 30+ years. [6]

Ecology

Diet

The common brown lemur's diet consists primarily of fruits, young leaves, and flowers. [4] :272–274 In some locations it eats invertebrates, such as cicadas, [5] spiders [5] and millipedes. [6] It also eats bark, sap, soil and red clay (see geophagy). [6] It can tolerate greater levels of toxic compounds from plants than other lemurs can. [4] :272–274 [6]

The common brown lemur from a Brazilian zoo was found to be a host of an intestinal acanthocephalan parasitic worm, Pachysentis dollfusi . It is unknown if the worm originates from Brazil or Madagascar. [12]

Distribution

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. [4] :272–274 They also live on the island of Mayotte, although this population has been introduced there by man. [4] :272–274

Related Research Articles

<span class="mw-page-title-main">Lemuridae</span> Family of lemurs

Lemuridae is a family of strepsirrhine primates native to Madagascar and the Comoros. They are represented by the Lemuriformes in Madagascar with one of the highest concentration of the lemurs. One of five families commonly known as lemurs. These animals were once thought to be the evolutionary predecessors of monkeys and apes, but this is no longer considered correct. They are formally referred to as lemurids.

<span class="mw-page-title-main">Ring-tailed lemur</span> A large lemur from Madagascar

The ring-tailed lemur is a medium- to larger-sized strepsirrhine (wet-nosed) primate, and the most internationally-recognized lemur species, owing to its long, black-and-white, ringed tail. It belongs to Lemuridae, one of five lemur families, and is the only member of the Lemur genus. Like all lemurs, it is endemic to the island of Madagascar, where it is endangered. Known locally in Malagasy as maky or hira, it ranges from gallery forests to spiny scrub in the southern regions of the island. It is omnivorous, as well as the most adapted to living terrestrially of the extant lemurs.

<span class="mw-page-title-main">Verreaux's sifaka</span> Species of lemur

Verreaux's sifaka, or the white sifaka, is a medium-sized primate in one of the lemur families, the Indriidae. It lives in Madagascar and can be found in a variety of habitats from rainforest to dry deciduous forests of western Madagascar and the spiny thickets of the south. Its fur is thick and silky and generally white with brown on the sides, top of the head, and on the arms. Like all sifakas, it has a long tail that it uses as a balance when leaping from tree to tree. However, its body is so highly adapted to an arboreal existence, on the ground its only means of locomotion is hopping. The species lives in small troops which forage for food.

<span class="mw-page-title-main">True lemur</span> Genus of lemurs

True lemurs, also known as brown lemurs, are the lemurs in genus Eulemur. They are medium-sized primates that live exclusively on Madagascar.

<span class="mw-page-title-main">Mongoose lemur</span> Species of lemur

The mongoose lemur is a small primate in the family Lemuridae, native to Madagascar and introduced to the Comoros Islands. These arboreal animals have pointed faces, long, bushy tails, dark-brown upper parts, pale bellies, and beards, which are reddish in males and white in females. They live in family groups and feed primarily on fruit, but also eat leaves, flowers, and nectar, with nectar from Ceiba pentandra trees making up a large part of their diet during the dry season. They have declined sharply in numbers because of habitat destruction and hunting, and the International Union for Conservation of Nature has rated their conservation status as "critically endangered".

<span class="mw-page-title-main">Cathemerality</span> Irregular organismal activity pattern

Cathemerality, sometimes called "metaturnality", is an organismal activity pattern of irregular intervals during the day or night in which food is acquired, socializing with other organisms occurs, and any other activities necessary for livelihood are undertaken. This activity differs from the generally monophasic pattern of nocturnal and diurnal species as it is polyphasic and is approximately evenly distributed throughout the 24-hour cycle.

<span class="mw-page-title-main">Red-bellied lemur</span> Species of lemur

The red-bellied lemur is a medium-sized strepsirrhine primate with a luxuriant chestnut brown coat. This lemur is endemic to eastern Madagascan rainforests and is distinguished by patches of white skin below the eyes, giving rise to a "teardrop" effect, particularly conspicuous in the male.

<span class="mw-page-title-main">Black lemur</span> Species of lemur

The black lemur is a species of lemur from the family Lemuridae. Like all lemurs, it is endemic to Madagascar. Originally, the species was thought to have two subspecies, Eulemur macaco macaco and Eulemur macaco flavifrons, both of which were elevated to species status by Mittermeier et al. in 2008 to Eulemur macaco and Eulemur flavifrons respectively. The most startling difference between the two species is the eye colour; Eulemur flavifrons, the blue-eyed black lemur, has blue eyes, while Eulemur macaco, the black lemur, has brown or orange eyes, and also has ear tufts.

<span class="mw-page-title-main">Blue-eyed black lemur</span> Species of true lemur

The blue-eyed black lemur, also known as the Sclater's lemur, is a species of true lemur. It can attain a body length of 39–45 cm (15–18 in), a tail length of 51–65 cm (20–26 in), a total length of 90–100 cm (35–39 in), and a weight of 1.8–1.9 kg (4.0–4.2 lb). Being a primate, it has strong hands with palms like a human, which have a rubbery texture to give it a firm grip on branches. Its tail is longer than its body and is non-prehensile.

<span class="mw-page-title-main">White-headed lemur</span> Species of lemur

The white-headed lemur, also known as the white-headed brown lemur, white-fronted brown lemur, or white-fronted lemur, is a species of primate in the family Lemuridae. It is only found in north-eastern Madagascar. It is arboreal and is usually found in rainforest treetops. It was formerly recognised as a subspecies of the common brown lemur.

<span class="mw-page-title-main">Collared brown lemur</span> Species of lemur

The collared brown lemur, also known as the red-collared brown lemur or red-collared lemur, is a medium-sized strepsirrhine primate and one of twelve species of brown lemur in the family Lemuridae. It is only found in south-eastern Madagascar. Like most species of lemur, it is arboreal, moving quadrupedally and occasionally leaping from tree to tree. Like other brown lemurs, this species is cathemeral, lives in social groups, primarily eats fruit, exhibits sexual dichromatism, and does not demonstrate female dominance. The species is listed as Endangered by the International Union for Conservation of Nature (IUCN) and is threatened primarily by habitat loss.

<span class="mw-page-title-main">Sanford's brown lemur</span> Species of lemur

Sanford's brown lemur, or Sanford's lemur, is a species of strepsirrhine primate in the family Lemuridae. Sanford's brown lemur was previously considered a subspecies of the common brown lemur but was raised to full species in 2001. It is named after Leonard Cutler Sanford, a trustee of the American Museum of Natural History.

Tampoketsa Analamaitso Reserve is a wildlife reserve of Madagascar located in the Sofia Region. It covers 17 150 ha in three districts: Port Bergé, Mandritsara and Mampikony.

<span class="mw-page-title-main">Southern woolly lemur</span> Species of lemur

The southern woolly lemur, or southern avahi, has been recently recognized as a separate species of woolly lemur in 2006 by Zaramody et al. It is a nocturnal and pair-living species. Groups can range from 2 to 5 individuals. A study in Sainte Luce forest revealed home range varied from 2.2 to 3.5 ha and that males can have larger home range and cover longer daily distances than females, in agreement with the territory defence and mate guarding hypotheses.

<span class="mw-page-title-main">Red-fronted lemur</span> Species of lemur

The red-fronted lemur, also known as the red-fronted brown lemur or southern red-fronted brown lemur, is a species of lemur from Madagascar. Until 2001, it was considered a subspecies of the common brown lemur, E. fulvus. In 2001, E. fulvus was split into several separate species, including Eulemur rufus, in which this species was included. In 2008, E. rufus was split into two species, the red lemur and the red-fronted lemur. E. rufus covers the population on the west coast north of the Tsiribihina River and E. rufifrons covers the population on the west coast south of the Tsiribihina River and the population in eastern Madagascar. The species split was based on genetic and morphological evidence. Mitochondrial DNA analysis indicates that E. rufifrons may be more closely related to the common brown lemur, white-headed lemur and Sanford's brown lemur than it is to E. rufus.

<span class="mw-page-title-main">Gray-headed lemur</span> Species of lemur

The gray-headed lemur, or gray-headed brown lemur, is a medium-sized primate, a cathemeral species of lemur in the family Lemuridae. Until a taxonomic revision in 2008, it was known as the white-collared brown lemur or white-collared lemur. It lives in south-eastern Madagascar. In 2005, satellite imagery estimates showed approximately 700 km2 (270 sq mi) of total remaining habitat within its geographic range. It is highly threatened by hunting and habitat loss, and was considered to be among the 25 most endangered primates in 2006–2008. It is currently listed as Critically Endangered by the International Union for Conservation of Nature (IUCN) due to a highly restricted range, and has been named one of "The World's 25 Most Endangered Primates."

<span class="mw-page-title-main">Red lemur</span> Species of lemur

The red lemur, also known as the rufous brown lemur or northern red-fronted lemur, is a species of lemur from Madagascar. Until 2001, the species E. rufus was considered a subspecies of the common brown lemur, E. fulvus, after which it was classified as its own species. In December 2008, the species was split into two separate species, the red lemur, E. rufus, distributed in dry lowland forests in northwestern Madagascar, and the red-fronted lemur, E. rufifrons, distributed in southwest and eastern Madagascar. The species split was based on genetic and morphological evidence. Mitochondrial DNA analysis indicates that E. rufifrons may be more closely related to the common brown lemur, white-headed lemur and Sanford's brown lemur than it is to E. rufus.

Yves Rumpler, is a French researcher and primatologist. He was a professor of embryology and primatology at the Louis Pasteur University of Strasbourg until he retired in 2007.

References

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