Yellow-throated squirrel
| Yellow-throated squirrel | ||||||||||||
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| Sciurus gilvigularis | ||||||||||||
| Wagner , 1842 |
The yellow-throated squirrel ( Sciurus gilvigularis ) is a species of squirrel from the genus of squirrels ( Sciurus ). It occurs in several separate areas in northern South America.
features
The yellow-throated squirrel reaches a head-trunk length of about 15.5 to 17.7 centimeters, plus a tail that is about 16.5 to 17.5 centimeters long. The weight is 150 to 165 grams. It has a very short and thin fur, the back coloration is greyish and black and ocher-sand colored interspersed. There is a sand-brown eye ring around the eyes, there are no spots behind the ears (postauricular spots). On the belly side the fur is dark ocher-colored-orange, darkest in the area of the chest and the upper trunk and lighter in the rear trunk area and on the throat. The tail is also grayish with black and sand-colored washings, it can be indistinctly banded.
distribution
The yellow-throated squirrel occurs in several - probably separate - areas in northern South America. This is a region in the south of Venezuela , an area in the north of Guyana and a larger area in the north of Brazil.
Way of life
The yellow-throated squirrel lives in undisturbed coastal forests and evergreen rainforest areas, which are mainly characterized by palm trees , lianas and rattan palms . It is missing in secondary forest areas and in logging areas. In Venezuela the animals are very rare and only live in very humid forests. They are diurnal and feed mainly on the seeds and fruits of the palm trees, with the fruits of Attalea maripa dominating the diet. They eat by taking the fruit with them on a branch or a rattan palm and can be detected from the noises they eat.
Systematics
The yellow-throated squirrel is classified as an independent species within the genus of squirrels ( Sciurus ), which consists of almost 30 species. The first scientific description comes from Johann Andreas Wagner from 1842, who described the species using individuals from Borba on the Rio Madeira in Brazil.
Within the species, two subspecies are distinguished with the nominate form :
- Sciurus gilvigularis gilvigularis : nominate form; in the northern area of the distribution areas. The tail is reddish in color.
- Sciurus gilvigularis paraensis : in the southern part of the Brazilian distribution area. The tail has white washings.
Status, threat and protection
The International Union for Conservation of Nature and Natural Resources (IUCN) does not classify the yellow-throated squirrel in a hazard category due to insufficient data on stocks, taxonomy and ecological needs, but is listed as "data deficient".
supporting documents
- ↑ a b c d e f Richard W. Thorington Jr. , John L. Koprowski, Michael A. Steele: Squirrels of the World. Johns Hopkins University Press, Baltimore MD 2012, ISBN 978-1-4214-0469-1 , pp. 51-52 .
- ↑ a b Sciurus gilvigularis in the IUCN Red List of Threatened Species 2015.3. Posted by: G. Amori, J. Koprowski, L. Roth, 2008. Retrieved October 29, 2015.
- ↑ a b Sciurus gilvigularis In: Don E. Wilson , DeeAnn M. Reeder (Ed.): Mammal Species of the World. A taxonomic and geographic Reference. 2 volumes. 3. Edition. Johns Hopkins University Press, Baltimore MD 2005, ISBN 0-8018-8221-4 .
literature
- Richard W. Thorington Jr. , John L. Koprowski, Michael A. Steele: Squirrels of the World. Johns Hopkins University Press, Baltimore MD 2012, ISBN 978-1-4214-0469-1 , pp. 51-52 .
Web links
- Sciurus gilvigularis inthe IUCN Red List of Threatened Species 2015.3. Posted by: G. Amori, J. Koprowski, L. Roth, 2008. Retrieved October 29, 2015.