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Treeshrews[1]
Madras Treeshrew (Anathana ellioti)
Madras Treeshrew (Anathana ellioti)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Eutheria
Superorder: Euarchontoglires
Order: Scandentia
Wagner, 1855
Families

The treeshrews (or tree shrews) are small mammals native to the tropical forests of Southeast Asia. The Madras Treeshrew ( Anathana ellioti) also known as the Indian Treeshrew is a species of Treeshrew in the Monotypic genus Chordates ( Phylum Chordata) are a group of Animals that includes the Vertebrates together with several closely related Invertebrates Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands See also Evolution of mammals Eutheria ("true beast" are a group of Mammals consisting of Placental mammals plus all extinct Mammals The Euarchontoglires (synonymous with Supraprimates) are a Mammalian superorder based on molecular genetic sequence analyses and Retrotransposon presence/absence Johann Andreas Wagner (1797 &ndash 1861 was a German Palaeontologist, Zoologist and Archaeologist. In Biological classification, family ( Latin The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands They make up the families Tupaiidae and Ptilocercidae and the entire order Scandentia. In Biological classification, family ( Latin The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family This article is about the taxonomic rank for the sequence of species in a taxonomic list see Taxonomic order In scientific classification used There are 20 species in 5 genera. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. A genus (plural genera from Γένος Latin genus "descent family type gender" is a low-level Taxonomic Treeshrews have a higher brain to body mass ratio than humans, though this is not uncommon for animals weighing less than a kilogram. Brain to body mass ratio (also known as the Encephalization Quotient or EQ) is a rough estimate of the possible intelligence Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus

Although called treeshrews, they are not true shrews (although they were previously classified in the Insectivora), and are not all arboreal. The order Insectivora (from Latin insectum "insect" and vorare "to eat" is a now-abandoned biological grouping within the Arboreal is a word meaning "related to or resembling trees" Among other things, they eat Rafflesia fruit. Rafflesia is a Genus of parasitic Flowering plants It was discovered in the Indonesian Rain forest by an Indonesian They have no clear fossil record.

Contents

Characteristics

Treeshrews are slender animals with long tails and soft, greyish to reddish-brown fur. The terrestrial species tend to be larger than the arboreal forms, and to have larger claws, which they use for digging up insect prey. They are omnivorous, feeding on insects, small vertebrates, fruit, and seeds. Omnivores (from Latin omne all everything vorare to devour are species that eat both Plants and Animals as their primary They have poorly developed canine teeth and unspecialised molars, with an overall dental formula of:[2]

2. Dentition is the development of Teeth and their arrangement in the Mouth. 1. 3. 3
3. 1. 3. 3

Treeshrews have good vision, which is binocular in the case of the more arboreal species. In Psychology, visual perception is the ability to interpret information from Visible light reaching the Eyes The resulting Perception is also Binocular vision is vision in which both Eyes are used together Most are diurnal, although the Pen-tailed Treeshrew is nocturnal. The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family As an Animal behavior, nocturnality describes sleeping during the Daytime and being active at Night - the opposite of the diurnal

Female treeshrews give birth to up to three young after a gestation period of 45-50 days, in nests lined with dry leaves inside tree hollows. The young are born blind and hairless, but are able to leave the nest after about a month. During this period, the mother provides relatively little maternal care, visiting her young only for a few minutes every other day to suckle them. Treeshrews reach sexual maturity after around four months, and breed for much of the year, with no clear breeding season in most species. [2]

These animals live in small family groups, which defend their territory from intruders. They mark their territories using various scent glands, or urine, depending on the particular species. Scent glands are found in the genital area of most Mammals and in various other parts of the body such as the underarms of Humans and the Preorbital Urine is a liquid waste product of the body secreted by the Kidneys by a process of filtration from Blood and Excreted through the Urethra.

The name Tupaia is derived from tupai the Malay word for squirrel[3] and was provided by Sir Stamford Raffles. [4]

Classification

Dentition of Tupaia
Dentition of Tupaia

Treeshrews were moved from Insectivora to the Primates order, because of certain internal similarities to the latter (for example, similarities in the brain anatomy, highlighted by Sir Wilfred Le Gros Clark), and classified as a primitive prosimian. A primate is a member of the biological order Primates ( Latin: "prime first rank" the group that contains Lemurs the Aye-aye The brain is the center of the Nervous system in animals All Vertebrates and the majority of Invertebrates have a brain Anatomy (from the Greek anatomia, from ana separate apart from and temnein, to cut up cut open is a branch of Biology that is the consideration Sir Wilfrid Edward Le Gros Clark (1895-1971 was a British Anatomist and Surgeon, today best remembered for his contribution to the study of Human Prosimians are the most primitive extant Primates they have characteristics similar to forms that were ancestral to Monkeys Apes and However, recent molecular phylogenetic studies have strongly suggested that treeshrews should be given the same rank (order) as the primates and, with the primates and the flying lemurs, belong to the clade Euarchonta. This article is about the taxonomic rank for the sequence of species in a taxonomic list see Taxonomic order In scientific classification used The Euarchonta are a Superorder of Mammals containing four orders: the Dermoptera or colugos the Scandentia or treeshrews the extinct According to this classification, the Euarchonta are sister to the Glires (lagomorphs and rodents), and the two groups are combined into the clade Euarchontoglires. Glires (Latin glīrēs, Dormice) is a Clade consisting of Rodents and lagomorphs ( Rabbits Hares and Pikas The lagomorphs are the members of the taxonomic order Lagomorpha, of which there are two families, the Leporidae ( Hares and Rodentia is an order of Mammals also known as rodents, characterised by two continuously-growing incisors in the upper and lower jaws which must The Euarchontoglires (synonymous with Supraprimates) are a Mammalian superorder based on molecular genetic sequence analyses and Retrotransposon presence/absence [5] Other arrangements of these orders have been proposed. [6]

Euarchontoglires
Glires

Rodentia (rodents)


Lagomorpha (rabbits, hares, pikas)


Euarchonta

Scandentia (treeshrews)



Dermoptera (flying lemurs)



†Plesiadapiformes


Primates






References

  1. ^ Helgen, Kristofer M. The Euarchontoglires (synonymous with Supraprimates) are a Mammalian superorder based on molecular genetic sequence analyses and Retrotransposon presence/absence Glires (Latin glīrēs, Dormice) is a Clade consisting of Rodents and lagomorphs ( Rabbits Hares and Pikas Rodentia is an order of Mammals also known as rodents, characterised by two continuously-growing incisors in the upper and lower jaws which must The lagomorphs are the members of the taxonomic order Lagomorpha, of which there are two families, the Leporidae ( Hares and The Euarchonta are a Superorder of Mammals containing four orders: the Dermoptera or colugos the Scandentia or treeshrews the extinct Plesiadapiformes is an extinct order of Mammals It is either closely related to the Primates or a pre-cursor to them A primate is a member of the biological order Primates ( Latin: "prime first rank" the group that contains Lemurs the Aye-aye The Madras Treeshrew ( Anathana ellioti) also known as the Indian Treeshrew is a species of Treeshrew in the Monotypic genus The Madras Treeshrew ( Anathana ellioti) also known as the Indian Treeshrew is a species of Treeshrew in the Monotypic genus UserPolbot. --> Dendrogale is a genus of Treeshrew in the Tupaiidae family UserPolbot. --> The Bornean Smooth-tailed Treeshrew ( Dendrogale melanura) is a species of Treeshrew The Northern Smooth-tailed Treeshrew ( Dendrogale murina) is a species of Treeshrew in the Tupaiidae family The Northern Treeshrew ( Tupaia belangeri) is a species of Treeshrew found in Southeast Asia. UserPolbot. --> The Golden-bellied Treeshrew or Mentawai Treeshrew ( Tupaia chrysogaster) is a species UserPolbot. --> The Striped Treeshrew ( Tupaia dorsalis) is a species of Treeshrew in the Tupaiidae The Common Treeshrew, Tupaia glis is a small mammal in the Treeshrew family Tupaiidae. UserPolbot. --> The Slender Treeshrew ( Tupaia gracilis) is a species of Treeshrew in the Tupaiidae UserPolbot. --> The Horsfield's Treeshrew ( Tupaia javanica) is a species of Treeshrew in the UserPolbot. --> The Bornean Treeshrew or Long-footed Treeshrew ( Tupaia longipes) is a species of UserPolbot. --> The Pygmy Treeshrew ( Tupaia minor) is a species of Treeshrew in the Tupaiidae UserPolbot. --> The Mountain Treeshrew ( Tupaia montana) is a species of Treeshrew in the Tupaiidae UserPolbot. --> The Nicobar Treeshrew ( Tupaia nicobarica) is a species of Treeshrew in the UserPolbot. --> The Palawan Treeshrew ( Tupaia palawanensis) is a species of Treeshrew in the UserPolbot. --> The Painted Treeshrew ( Tupaia picta) is a species of Treeshrew in the Tupaiidae UserPolbot. --> The Ruddy Treeshrew ( Tupaia splendidula) is a species of Treeshrew in the Tupaiidae UserPolbot. --> The Large Treeshrew ( Tupaia tana) is a species of Treeshrew in the Tupaiidae The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family The Pen-tailed Treeshrew ( Ptilocercus lowii) is a species of Treeshrew in the Ptilocercidae family (2005-11-16). Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. Events 534 - A second and final revision of the Codex Justinianus is published in Wilson, D. E. , and Reeder, D. M. (eds): Mammal Species of the World, 3rd edition, Johns Hopkins University Press, 104-109. ISBN 0-801-88221-4.  
  2. ^ a b Martin, Robert D. (1984). in Macdonald, D. : The Encyclopedia of Mammals. New York: Facts on File, 440-445. ISBN 0-87196-871-1.  
  3. ^ Nowak, R. M. (1999). Walker's Mammals of the World. Johns Hopkins University, p. 245. ISBN 0801857899.  
  4. ^ Craig, John (1849). A new universal etymological technological, and pronouncing dictionary of the English Language.  
  5. ^ Janecka, Jan E. ; Miller, Webb; Pringle, Thomas H. ; Wiens, Frank; Zitzmann, Annette; Helgen, Kristofer M. ; Springer, Mark S. & Murphy, William J. (2007-11-02), “Molecular and Genomic Data Identify The Closest Living Relatives of Primates”, Science 318: 792-4, <http://www.sciencemag.org/cgi/reprint/318/5851/792.pdf> 
  6. ^ Pettigrew JD, Jamieson BG, Robson SK, Hall LS, McAnally KI, Cooper HM, 1989, Phylogenetic relations between microbats, megabats and primates (Mammalia: Chiroptera and Primates). Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1570 - A Tidal wave in the North Sea devastates the coast from Holland to Jutland, killing more than 1000 Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences 325(1229):489-559

External links

Dictionary

treeshrew

-noun

  1. Alternative spelling of tree shrew.
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