Goodfellow Comb rat

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Goodfellow 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 : Goodfellow Comb rat
Scientific name
Ctenomys goodfellowi
Thomas , 1921

The Goodfellow crested rat ( Ctenomys goodfellowi ) is a type of crested rat . The species lives in eastern Bolivia and is only known from two localities. The species status is partly controversial.

features

The Goodfellow comb rat reaches a head-trunk length of about 24.0 centimeters for the males and 18.6 to 21.4 centimeters for the females and a tail length of 9.3 and 7.1 to 7.9 centimeters, respectively. Weight information is not available. It is a comparatively large species of the genus, but slightly smaller than the Bolivian crested rat ( Ctenomys boliviensis ). As with this one, the fur on the back is colored light red-brown, the top of the head and the muzzle are black-brown, around the neck a dark brown band extends down to the back. The latter is more strongly developed than the Bolivian comb rat. The ventral side is light rust-red; in contrast to that of the Bolivian comb rat, the white area is reduced to small white spots in the armpits and groin area . The tail is dark brown on the top and light on the underside.

The skull is strong, but smaller and less bordered than that of the Bolivian crested rat. The zygomatic arches are thickened, the tympanic membranes smaller and less flattened than those of the Bolivian comb rat. The incisors and also the premolars are very broad and orange in color.

The karyotype is variable and consists of a chromosome set of 2n = 46 chromosomes (FN = 64). The sperm of the animals are symmetrical.

distribution

The Goodfellow crested rat lives in eastern Bolivia and is only known from two localities in the area of ​​Esperanza and San Ramón in the province of Ñuflo de Chávez , Department Santa Cruz .

Way of life

No information is available on the species' way of life and habitats. Like all comb rats, it probably lives solitary and terrestrial and digs burrows in the ground.

Systematics

The Goodfellow crested rat is classified as an independent species within the genus of crested rats ( Ctenomys ), which consists of about 70 species. The first scientific description of the species comes from Oldfield Thomas from 1921, who described it using individuals from Esperanza. It is named after the British naturalist Walter Goodfellow (1866–1953).

The species status is controversial and according to Gardner et al. In 2014 it was integrated into the Bolivian Comb-rat, while according to other authors it is viewed as independent. Due to molecular biological characteristics, the species was assigned to the boliviensis species group within the genus with some close relatives .

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

Status, threat and protection

The Goodfellow Comb rat is listed as not endangered by the International Union for Conservation of Nature and Natural Resources (IUCN). According to this, there are currently no threats to the existence of this species.

supporting documents

  1. ↑ a b c d e f g h i Goodfellow's 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. 514. ISBN 978-84-941892-3-4 .
  2. ↑ a b Scott Lyell Gardner, Jorge Salazar-Bravo, Joseph A. Cook: New Species of Ctenomys Blainville 1826 (Rodentia: Ctenomyidae) from the Lowlands and Central Valleys of Bolivia. Faculty Publications on the Harold W. Manter Laboratory of Parasitology, Special Publications, Museum of Texas Tech University 62, 2014; Pp. 1-34; Full text .
  3. ^ "Goodfellow" In: Bo Beolens, Michael Grayson, Michael Watkins: The Eponym Dictionary of Mammals. Johns Hopkins University Press, 2009; Pp. 158-159; ISBN 978-0-8018-9304-9 .
  4. ↑ Ctenomys goodfellowi . 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 .
  5. ↑ Andrés Parada, Guillermo D'Elía, Claudio J. Bidau, Enrique P. Lessa: Species groups and the evolutionary diversification of tuco-tucos, genus Ctenomys (Rodentia: Ctenomyidae). Journal of Mammalogy 92 (3), June 9, 2011; Pp. 671-682. doi : 10.1644 / 10-MAMM-A-121.1
  6. ↑ a b Ctenomys goodfellowi in the endangered Red List species the IUCN 2018 Posted by: N. Roach, L. Naylor, 2016. Retrieved on February 1 of 2019.

literature

  • Goodfellow's 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. 514. ISBN 978-84-941892-3-4 .