Blackhand tamarin
| Blackhand tamarin | ||||||||||||
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Black hand tamarin ( Saguinus niger ) |
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| Saguinus niger | ||||||||||||
| ( É. Geoffroy , 1803) |
The black-hand tamarin ( Saguinus niger ) is a species of primate from the genus group of tamarins , which belongs to the family of marmosets (Callitrichidae). It is closely related to and is sometimes considered a subspecies of the red-handed marine .
features
Black-hand tamarins reach a head body length of 23 to 25 centimeters, plus a tail that is around 32 to 44 centimeters long. Their weight is around 450 grams. Their fur is dark, mostly black in color. In contrast to the red-hand tamarin, the paws are also dark brown or black. As with all marmosets, the fingers and toes (with the exception of the big toe) have claws instead of nails. The dark face is hairless, the large ears protrude from the fur.
distribution and habitat
Black-hand tamarins are native to northeast Brazil south of the Amazon between the major rivers Rio Xingu and Rio Tocantins . The habitat of this species are forests, often secondary forests with dense undergrowth .
Way of life
Like all tamarins, they are diurnal tree-dwellers who move on all fours or jumping. They usually stay in the lower tree layers and rarely climb more than 10 meters. They live in groups of two to eight animals organized around a fertile pair. The area with around 35 hectares is defended against conspecifics. The diet of these animals consists mainly of fruits, but they also eat insects and tree sap. As with all tamarins, twin births are predominantly and primarily the fathers are likely to take care of the offspring.
Danger
The distribution area of the black-hand tamarins is one of the economically strongest growing regions in Brazil. Accordingly, numerous forest areas are being cleared and the habitat of these animals is being destroyed. The IUCN estimates that the total population has declined by more than 30% in the last 18 years and lists the species as "endangered" ( vulnerable ).
literature
- Thomas Geissmann : Comparative Primatology. Springer-Verlag, Berlin et al. 2003, ISBN 3-540-43645-6 .
- Ronald M. Nowak: Walker's Mammals of the World. 6th edition. Johns Hopkins University Press, Baltimore MD 1999, ISBN 0-8018-5789-9 .
Individual evidence
- ↑ Renato Gregorin & Mario De Vivo: Revalidation of Saguinus ursula Hoffmannsegg (Primates: Cebidae: Callitrichinae). Zootaxa 3721 (2): 172-182 (Oct. 14, 2013). DOI: 10.11646 / zootaxa.3721.2.4 .