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Posted by : Aron
четвъртък, 21 февруари 2013 г.
White-footed tamarin
From Wikipedia, the free encyclopedia
| White-footed tamarin | |
|---|---|
| Conservation status | |
Endangered (IUCN 3.1)[1] | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Primates |
| Family: | Callitrichidae |
| Genus: | Saguinus |
| Species: | S. leucopus |
| Binomial name | |
| Saguinus leucopus (Günther, 1877) | |
| Distribution range of Saguinus leucopus in South America | |
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[edit]Taxonomy & Phylogeny
Some authorities, such as Thorington (1976), posit that S. leucopus is very closely related to the cotton-top tamarin, Saguinus oedipus.[2] Other analyses made by Hernandez-Camacho & Cooper (1976), and later Mittermeier and Coimbra-Filho in 1981,[2] and finally Grooves (2001)[3] This view is supported by Hanihara & Natoria’s multivariate analysis of toothcomb dental morphology (1987) and by Skinner’s work in 1991, which found high similarity between S. oedipus and S. leucopus in 16 out of 17 morphological traits considered.[2] This is further supported by the transition from child to adult, during which the fur coloration changes take place and are similar between the two species.[4] Philip Hershkovitz proposed that the divergenceof the two species occurred in the Pleistocene at the height of the Atrato river, where it intersected the Cauca-Magdalena. At this time, the area was covered by a sea, which created a geographic barrier which caused this ancestral species to diverge from S. oedipus through the process of allopatric speciation. Today, the two species are principally separated by the Atrato river.[4]
[edit]Characteristics
White-footed Tamarin exhibits a silvery pale brown back with lighter streaks. The front is russet colored. The tail is brown, sometimes with a white tip. Feet and hands are also white. The face is only thinly furred with white hairs. Thick brown hair is around the neck and between the ears.[5] Its forelimbs are shorter than its hindlimbs. Its vision, auditory, and olfactory senses are very sharp.[6] Average adult male can weigh 494 g and the average adult female is only slightly smaller, weighing 490 g.[7] Other primates have nails on each digit but tamarins have claws on all digits except the big toe.[6]
[edit]Behavior
White-footed Tamarin uses scent glands to mark its territory. Lives in a group with extended family of 4-15 individuals. It lives in trees (arboreal) and is active during the day (diurnal). Very agile in the trees, it uses all four limbs (quadrupedal) to aid in maneuvering through the branches.[6]
[edit]Reproduction and Life Cycle
White-footed Tamarins exhibit polyandrous reproduction, meaning one female will mate with more than one male.[6] Gestation cycle is 130–150 days. Female will give birth to 1-3 young and males have a role in rearing the young and carrying them on his back. Maturity is 12–18 months old.[6] Two birthing seasons have been recorded, one between May and June and
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