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Eastern Woolly Lemur
The eastern woolly lemur (''Avahi laniger''), also known as the eastern avahi or Gmelin's woolly lemur, is a species of woolly lemur native to eastern Madagascar, where it lives in the wet tropical rainforest at low elevations along the eastern coast of the island or they can also inhabit the northern tip of the island with other species. The woolly lemur name refers to their thick, tightly curled hair, whereas their generic name avahi refers to their high-pitched defensive call. The eastern woolly lemur almost has an owl-look with its large eyes, small rounded head, and ears that are mostly hidden. This nocturnal animal weighs and reaches a length of with a tail of . Its diet consists mainly of leaves and buds with fruits, flowers, and bark. Eastern woolly lemurs live in monogamous pairs together with their offspring. The eastern woolly lemur's breeding season ranges from March to May with the baby lemurs being born around August to September. Other lemur species that live in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Friedrich Gmelin
Johann Friedrich Gmelin (8 August 1748 – 1 November 1804) was a German natural history, naturalist, chemist, botanist, entomologist, herpetologist, and malacologist. Education Johann Friedrich Gmelin was born as the eldest son of Philipp Friedrich Gmelin in 1748 in Tübingen. He studied medicine under his father at University of Tübingen and graduated with a Master's degree in 1768, with a thesis entitled: ', defended under the presidency of Ferdinand Christoph Oetinger, whom he thanks with the words '. Career In 1769, Gmelin became an adjunct professor of medicine at University of Tübingen. In 1773, he became professor of philosophy and adjunct professor of medicine at University of Göttingen. He was promoted to full professor of medicine and professor of chemistry, botany, and mineralogy in 1778. He died in 1804 in Göttingen and is buried there in the Albanifriedhof, Albani cemetery with his wife Rosine Louise Gmelin (1755–1828, née Schott). Johann Friedrich Gm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-bellied Lemur
The red-bellied lemur (''Eulemur rubriventer'') 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. The species, first identified in 1850, exhibits diurnal behaviour and marked sexual dimorphism. The red-bellied lemur has been studied extensively since the mid-1980s, primarily in Ranomafana National Park. This lemur species is designated as vulnerable according to the IUCN Red List, due to threats endangering habitats from slash-and-burn agriculture in Madagascar. Etymology The various Malagasy names for the red-bellied lemur include , , , , and . In the French scientific literature (Madagascar's second official language is French, due to prior colonisation by France), the species is called . Description Being sexually dimorphic, the male of the species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1788
A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals). Mammals are the only living members of Synapsida; this clade, together with Sauropsida (reptiles and birds), constitutes the larger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woolly Lemurs
Wool is the textile fiber obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to inorganic materials, such as mineral wool and glass wool, that have some properties similar to animal wool. As an animal fiber, wool consists of protein together with a small percentage of lipids. This makes it chemically quite distinct from cotton and other plant fibers, which are mainly cellulose. Characteristics Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber: kemp, medullated fibers, and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lack c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, with half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. Estimates vary widely as to the extent of deforestation in the tropics. In 2019, nearly a third of the overall tree cover loss, or 3.8 million hectares, occurred within humid tropical primary forests. These are areas of mature rainforest that are especially important for biodiversity and carbon storage. The direct cause of most deforestation is agriculture by far. More than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Lesser Bamboo Lemur
The southern lesser bamboo lemur (''Hapalemur meridionalis''), also known as the southern bamboo lemur, rusty-gray lesser bamboo lemur, and southern gentle lemur, is a species of bamboo lemur endemic to southern Madagascar. Taxonomy It was originally considered to be a subspecies of the eastern lesser bamboo lemur (''Hapalemur griseus''), and is of similar size, but is darker and redder than the eastern lesser bamboo lemur, with a shorter tail and different vocalizations. The type locality is the forestry station of Mandena, and it is further supported as a separate species by recent mitochondrial DNA research. It is possible that hybridisation with ''H griseus'' occurs on the Andringitra Massif at altitudes of . Distribution The precise distribution is not known but it is found in south-eastern Madagascar from the Mananara River south to Andohahela and up to an altitude of . This species is found in three national parks; (Andohahela, Andringitra and Midongy du Sud), three s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collared Brown Lemur
The collared brown lemur (''Eulemur collaris''), 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 (active during the day and the night), 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. Taxonomy Together with the twelve other true lemurs (genus ''Eulemur''), the collared brown lemur (''E. collaris'') is a type of lemur belonging to the family Lemuridae. Collectively, lemurs (infraorder Lemuriformes) are classified as strepsirrhine primate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fat-tailed Dwarf Lemur
The fat-tailed dwarf lemur (''Cheirogaleus medius''), also known as the lesser dwarf lemur, western fat-tailed dwarf lemur, or spiny forest dwarf lemur, is endemic to Madagascar. The fat-tailed dwarf lemur is long from its head to the end of its torso, with an tail extending beyond that. It weighs . It has a lifespan of 4-11 years in the wild and 18 years in captivity. It uses its tail to store fat reserves for torpor. Hibernation Recent research has shown that ''C. medius'' hibernates (or aestivates), even though in the tropical winter of Madagascar, temperatures remain high. It is the first tropical mammal and only primate in which hibernation has been demonstrated. However, the Malagasy winter is dry, and it appears that the lemur is avoiding the drought. It can hibernate for seven months. Unlike animals that hibernate in temperate regions, the lemur does not control its body temperature while hibernating, and if the tree hole in which it is sleeping is not well insulated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Dwarf Lemur
The greater dwarf lemur (''Cheirogaleus major''), or the Geoffroy's dwarf lemur, is a lemur that is widely distributed over the primary and secondary forests near the eastern coast of Madagascar. They are also found in northern parts of Madagascar. Greater dwarf lemurs live in forests and dry scrub areas. The head and body of the greater dwarf lemur can range from 167 to 264 millimeters in length, and 164 to 600 grams. Their tails can range from 195 to 310 millimeters in length.Cooper, A. 2000. "Cheirogaleus major" (On-line), Animal Diversity Web. Accessed July 25, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Cheirogaleus_major.html Greater dwarf lemurs are nocturnal. During the day, they sleep in nests of twigs, leaves, and grass, or hollowed sections of trees padded with dry leaves. Their diet consists mostly of fruits, flowers, and nectar. Flower nectar is an important part of the diet from November to December. Sometimes they will also eat insects a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Mouse Lemur
The brown mouse lemur (''Microcebus rufus'') is a small primate, and like the other mouse lemurs can only be found on the island of Madagascar. They are known also as the rufous mouse lemur, eastern rufous mouse lemur, red mouse lemur, or russet mouse lemur. Its dorsal side is brown or reddish-brown, while ventrally it is a whitish-grey. The mouse lemurs are among the shortest-lived of primates. The brown mouse lemur has a lifespan of 6–8 years in the wild, although it averages 12 years under human care. It can be found in rainforests in eastern Madagascar. It is a solitary and nocturnal creature. Taxonomy Étienne Geoffroy Saint-Hilaire described this species in 1836 when he described the genus '' Microcebus'', and is sometimes incorrectly cited as the author of this species, but he neglected to assign it a specific epithet. René Lesson would later give the animal a proper taxonomic name as ''Microcebus rufus''. Wilson & Reeder's 2005 mammal checklist ''Mammal Species of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diademed Sifaka
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. Description ''P. diadema'' is readily distinguished from all the other lemur species by its characteristic markings and large physical size. Its entire coat is moderately long, silky and luxuriant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jan Van Der Hoeven
Jan van der Hoeven (9 February 1801 – 10 March 1868) was a Dutch zoologist. His most famous book is ''Handboek der Dierkunde'' (1827–1833), translated into German and English (by prof. Clark). He wrote as readily about crocodiles as about butterflies, lancelets and lemurs. His research on the nautilus resulted in the discovery of a secondary sexual organ of unknown function which was then named after him as Hoeven's organ or Van der Hoeven's organ. Biography Jan van der Hoeven came from a wealthy family of merchants in Rotterdam. In 1819 he moved to Leiden. In 1822 he got a degree in physics and in 1824 in medicine. After a visit to Paris he started working as a family doctor in Rotterdam, but in 1826 he was appointed Professor of Zoology and Mineralogy at the University of Leiden. He married in that year to Anna van Stolk. In his youth Van der Hoeven was influenced by and paid tribute to the German philosopher Johann Gottfried Herder and he was friendly with Willem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
