Sierra del Tontal Comb rat

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Sierra del Tontal Comb rat
Systematics
Subordination : Porcupine relatives (Hystricomorpha)
Partial order : Hystricognathi
without rank: Guinea Pig Relatives (Caviomorpha)
Family : Comb rats (Ctenomyidae)
Genre : Comb rats ( Ctenomys )
Type : Sierra del Tontal Comb rat
Scientific name
Ctenomys tulduco
Thomas , 1921

The Sierra del Tontal crested rat ( Ctenomys tulduco ) is a species of crested rat . The species occurs in western Argentina , where it is only found in the province of San Juan .

features

The Sierra del Tontal comb rat reaches a head-trunk length of 19 centimeters and a tail length of 6.9 centimeters; the rear foot length is 32.6 millimeters. It is a medium-sized species of the genus. Information on weight is not available. The back color is dark gray and resembles the color of the San Juan comb rat ( Ctenomys johannis ); the ventral side is also gray and corresponds to the coloration of the puntilla comb rat ( Ctenomys coludo ). The tail is short and there is a black or blackish gray line on the top.

The skull corresponds to that of the San Juan comb rat, but is significantly smaller. The tympanic membranes are comparatively small, but larger than those of the Mendoza comb rat ( Ctenomys mendocinus ).

distribution

The distribution area of ​​the Sierra del Tontal crested rat is limited to western Argentina , where it has only been proven to be endemic from its initial location in the Sierra del Tontal in the province of San Juan . The altitude distribution is around 2700 meters.

Way of life

As with most other species of comb rats, very little information is available about the way of life of the Sierra del Tontal crested rat. Like all comb rats, it lives largely underground in duct systems. The animals eat vegetarian food on the available plants, especially grass and leaves, and are solitary.

Systematics

The Sierra-del-Tontal Crest rat as independent way within the genus of the comb rats ( Ctenomys belongs), which consists of about 70 species. The first scientific description of the species comes from the British zoologist Oldfield Thomas from 1921, who described it using individuals from Los Sombreros in the Sierra del Tontal in Argentina. In some cases the yellow-brown comb rat ( Ctenomys fulvus ) was added.

Apart from the nominate form, no subspecies are distinguished within the species .

Status, threat and protection

The International Union for Conservation of Nature and Natural Resources (IUCN) does not classify the Sierra del Tontal comb rat in a hazard category due to a lack of data, but rather lists it as "data deficient". It is assumed that the species is threatened due to its very small distribution area; however, information about the stocks and their situation is very limited.

supporting documents

  1. ↑ a b c d e f g Sierra Tontal Tuco-tuco. In: TRO Freitas: Family Ctenomyidae In: Don E. Wilson, TE Lacher, Jr., Russell A. Mittermeier (editor): Handbook of the Mammals of the World: Lagomorphs and Rodents 1. (HMW, Volume 6) Lynx Edicions, Barcelona 2016, p. 533. ISBN 978-84-941892-3-4 .
  2. ↑ a b c Ctenomys tulduco in the endangered Red List species the IUCN 2019. Posted by: CJ Bidau, 2016. Accessed May 8 2020th
  3. ↑ a b c Ctenomys tulduco . In: Don E. Wilson , DeeAnn M. Reeder (Eds.): 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

  • Sierra Tontal Tuco-tuco. In: TRO Freitas: Family Ctenomyidae In: Don E. Wilson, TE Lacher, Jr., Russell A. Mittermeier (editor): Handbook of the Mammals of the World: Lagomorphs and Rodents 1. (HMW, Volume 6) Lynx Edicions, Barcelona 2016, p. 533. ISBN 978-84-941892-3-4 .

Web links