|Distribution range of Saguinus leucopus in South America|
Taxonomy and phylogeny
Some authorities, such as Thorington (1976), posit that S. leucopus is very closely related to the cotton-top tamarin, Saguinus oedipus. Other analyses made by Hernandez-Camacho & Cooper (1976), and later Mittermeier and Coimbra-Filho in 1981, and finally Grooves (2001) 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. 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. Philip Hershkovitz proposed that the divergence of 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.
The 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. Its forelimbs are shorter than its hindlimbs. Its vision, auditory, and olfactory senses are very sharp. Average adult male can weigh 494 g and the average adult female is only slightly smaller, weighing 490 g. Other primates have nails on each digit but tamarins have claws on all digits except the big toe.
The white-footed tamarin uses scent glands to mark its territory. It lives in a group with its extended family of four to fifteen individuals. It lives in trees and is active during the day. Very agile in the trees, it uses all four limbs (quadrupedal) to aid in maneuvering through the branches.
The white-footed tamarin exhibits polyandrous reproduction, meaning one female will mate with more than one male. Gestation cycle is 130–150 days. Females will give birth to one to three young and males have a role in rearing the young and carrying them on his back. Maturity is 12–18 months old. Two birthing seasons have been recorded, one between May and June and the other between October and November.
|Wikispecies has information related to: White-footed tamarin|
- Groves, C. P. (2005). Wilson, D. E.; Reeder, D. M, eds. Mammal Species of the World (3rd ed.). Baltimore: Johns Hopkins University Press. p. 135. OCLC 62265494. ISBN 0-801-88221-4.
- Moarles-Jiménez, A. L., Link, A. & Stevenson, P. (2008). Saguinus leucopus. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 2 January 2009.
- Estrada, A. (2006). New perspectives in the study of Mesoamerican primates: distribution, ecology, behavior, and conservation.
- Defler, T. (2003). Mahecha, J. V. R., ed. Primates of Colombia (2nd ed.).
- Hershkovitz, P. (1977). Living New World Monkeys (Platyrrhini): With an Introduction to Primates.
- "Saguinus leucopus". Animal Info. 2006. Retrieved 20 November 2012.
- "Silvery-brown bare-faced tamarin". ARKive. Retrieved 20 November 2012.