Rio Napo Tamarin
| Rio Napo Tamarin | ||||||||||||
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Rio Napo Tamarin ( Leontocebus nigricollis graellsi ) |
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| Leontocebus nigricollis graellsi | ||||||||||||
| ( Jiménez de la Espada , 1870) |
The Rio Napo tamarin or Graells tamarin ( Leontocebus nigricollis graellsi , syn .: Saguinus nigricollis graellsi ) is a subspecies of the black -backed tamarin from the marmoset family (Callitrichidae).
features
Like all tamarins, Rio Napo tamarins are relatively small primates. They reach a head body length of around 22 centimeters, the tail becomes significantly longer than the body. Their fur is gray-green on the shoulders and on the front part of the back and turns olive-green on the rear part of the trunk. The rear part of the tail is black. The head is also black, the ears are large and hairless, the muzzle region is whitish in color. As with all marmosets, the fingers and toes (with the exception of the big toe) have claws instead of nails.
distribution and habitat
Rio Napo tamarins are common along the Río Napo in northeast Ecuador and northern Peru . The exact extent of its range is unknown, as is whether the species occurs in the neighboring regions of Colombia . Their habitat are rainforests, mostly they can be found at sea heights of 200 to 400 meters.
Way of life
Like all tamarins, they are diurnal tree-dwellers who move on all fours and jump. They live in groups of two to nine animals. Groups can contain multiple females, but only the dominant one will breed. The diet of these animals consists of fruits and other plant material as well as insects.
Danger
The distribution area of the Rio Napo tamarins is one of the areas most severely affected by deforestation in the western Amazon basin. The IUCN estimates that the total population will decline by 20 to 25% over the next three generations (18 years) and lists the species as " near threatened ".
literature
- Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
- Don E. Wilson, DeeAnn M. Reeder (Eds.): Mammal Species of the World . A taxonomic and geographic Reference. 3rd edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .
Web links
- Saguinus nigricollis ssp. graellsi in the endangered Red List species the IUCN 2008. Posted by: de la Torre, S., Di Fiore, A. & Stevenson, P., 2008. Accessed on 24 February, 2009.