Simpona, Simpony, Ankomba joby, Diademed sifaka, Diademed simpona
The diademed sifaka (Propithecus diadema ), or diademed simpona, is an endangered species of sifaka, one of the lemurs endemic to certain rainforests in eastern Madagascar. Along with the indri, this species is one of the two largest living lemurs, with an average weight of 6.5 kg and a total adult length of approximately 105 centimetres (41 inches), half of which is its tail. Russell Mittermeier, one of the contemporary authorities on lemurs, describes the diademed sifaka as "one of the most colorful and attractive of all the lemurs", having a long and silky coat. P. diadema is also known by the Malagasy names simpona, simpony and ankomba joby. The term "diademed sifaka" is also used as a group species designation formerly encompassing four distinct subspecies.
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DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
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HerbivoreA herbivore is an animal anatomically and physiologically adapted to eating plant material, for example, foliage, for the main component of its die...
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FolivoreIn zoology, a folivore is a herbivore that specializes in eating leaves. Mature leaves contain a high proportion of hard-to-digest cellulose, less ...
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FrugivoreA frugivore is an animal that thrives mostly on raw fruits or succulent fruit-like produce of plants such as roots, shoots, nuts, and seeds. Approx...
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ArborealArboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some anima...
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AltricialAltricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
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ZoochoryZoochory animals are those that can disperse plant seeds in several ways. Seeds can be transported on the outside of vertebrate animals (mostly mam...
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Island endemicIsland endemic animals are found in a single defined geographic location, such as an island. Animals or organisms that are indigenous to a place ar...
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JumpingJumping (saltation) can be distinguished from running, galloping, and other gaits where the entire body is temporarily airborne by the relatively l...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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TerritorialA territory is a sociographical area that which an animal consistently defends against the conspecific competition (or, occasionally, against anima...
Among animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
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PolygynyPolygyny is a mating system in which one male lives and mates with multiple females but each female only mates with a single male.
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Dominance hierarchyA dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social gr...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withWidely considered as the most beautiful of Madagascan primates, the Diademed sifaka has a bare, black or dark gray face framed with white hair, with a patch of black on the top of its head. Its head resembles a ‘diadem’ or ornamental headband worn by royalty, and is the source of its English name. In addition to its unmistakable appearance, this lemur is also known for its large size, being the second largest lemur alive today after the indri.
Diademed sifakas inhabit eastern Madagascar, from the Mananara Nord River, to the Mangoro and Onive Rivers in the south. It occurs in montane rainforests and primary lowland.
Diademed sifakas are almost totally arboreal, but may forage or play on the ground. These animals are diurnal and social, and live in groups numbering 2 to 9 animals. These groups may have several breeding females and several breeding males, along with sub-adults and infants. Members of the group may be related, especially the females. It used to be believed that females remained within their birth group, whereas males move into groups nearby, but more recent studies report that females may move between groups as well. Vocalizations are mainly used to maintain group cohesion. Groups have distinct territories of 20 to 30 ha, and mark them by the use of scent. Males do scent marking twice as often as the females, and the frequency doubles near the territorial boundaries.
The Diademed sifaka is an herbivore, eating only leaves, fruit, flowers, and young shoots.
Diademed sifakas are polygynous and have a hierarchy system for mating, whereby only the dominant male seems to mate with the females. Subdominant males may act aggressively toward the dominant male and try to stop him from mating. The season for mating occurs in the summer months of December and January. The gestation period is about six months, and one or two offspring are born in the winter. The young may nurse for as long as until the age of 2, however, by this time their mother's milk is not a substantial part of their nutrition. The mother also provides protection, grooming, and socialization for her young. Diademed sifakas reach maturity when they are four years old for females, whereas males are mature at five years old.
Diademed sifakas are under threat by habitat destruction, which occurs mainly through slash-and-burn agriculture but also because of logging. They are also hunted as a food source, even in the protected areas. Diademed sifakas are subject to predation by avian predators and probably fossas.
According to the Wikipedia resource, the total Diademed sifaka population size is 6,000 - 10,000 individuals. Today this species’ numbers are decreasing and it is classified as Critically Endangered (CR) on the IUCN Red List.
As frugivores, Diademed sifakas have a role in dispersing seeds, and, as prey items, they may have an impact on predator populations.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...