Amazon shrew pouch rat
| Amazon shrew pouch rat | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Monodelphis glirina | ||||||||||||
| ( Wagner , 1842) |
The Amazon shrew rat ( Monodelphis glirina ) occurs in a broad strip that extends from the mouth of the Amazon to southeastern Peru and northern Bolivia.
description
Males of the Amazon shrew pouch rat reach a head body length of 12 to 18 cm, have a 6.5 to 10.6 cm long tail and weigh 44 to 150 g. Females stay smaller and have a head body length of 11 to 16.5 cm, a tail length of 6.5 to 9 cm and a weight of 40 to 85 g. The fur on the back is light gray. On the sides of the body, the animals are orange, the belly is light orange to cream-colored or grayish. The hair on the back is approx. 8 mm long, on the belly it is only 4 mm long. The paws are gray, the ears small and solid gray. The tail is mostly hairless and brownish in color. There are no dark circles under the eyes. Like probably all shrew pouch rats, the females do not have a pouch. The number of teats is nine. The karyotype of Arlindo's shrew pouch rat is 2n = 18, FN = 30.
Way of life
The Amazon shrew pouch rat is found in terra firme forests, is very adaptable and can survive even in highly fragmented forests. It feeds on various invertebrates. Above all, the remains of beetles were found in gastric examinations , as well as grasshoppers , hymenoptera and bipedos . Females also eat seeds. So far nothing is known about the way of life, the behavior, the activity patterns and the reproduction of the animals.
Systematics
The holotype of the Amazon shrew pouch rat was found by Johann Natterer during the Austrian expedition to Brazil (1817 to 1835) and the species was first scientifically described in 1842 by the German zoologist Johann Andreas Wagner under the name Didelphis glirina , which was then assigned to the possums . Today it belongs to the genus of the shrew pouch rats ( Monodelphis ). The Terra typica of Monodelphis glirina is located on the Río Mamoré in the Brazilian state of Rondônia in the southwest of the distribution area. Monodelphis maraxina (Thomas, 1923) from the large island of Marajó in the mouth of the Amazon is currently regarded as a synonym of the species, since the characteristics of Monodelphis maraxina lie within the characteristics of various individuals of the Amazon shrew rat. However, the Amazon shrew pouch-rat is relatively variable in its coloration and morphologically and has great genetic differentiation, so that it is possible that the name Monodelphis glirina hides a complex of several very closely related species.
status
The Amazon shrew pouch rat is listed as harmless by the IUCN because of its large distribution area, its adaptability and the likely occurrence in several protected areas.
supporting documents
- ↑ a b c d e Diego Astúa: Family Didelphidae (Opossums). in Don E. Wilson , Russell A. Mittermeier : Handbook of the Mammals of the World - Volume 5. Monotremes and Marsupials. Lynx Editions, 2015, ISBN 978-84-96553-99-6 . Page 150.
- ↑ Silvia Eliza Pavan, Rogerio Vieira Rossi, Horacio Schneider: Species diversity in the Monodelphis brevicaudata complex (Didelphimorphia: Didelphidae) inferred from molecular and morphological data, with the description of a new species. Zoological Journal of the Linnean Society, Volume 165, Issue 1, May 2012, Pages 190-223. DOI: 10.1111 / j.1096-3642.2011.00791.x
- ↑ Monodelphis glirina in the endangered Red List species the IUCN 2016 Posted by: Brito, D., Astua de Moraes, D. & Solari, S., 2016. Accessed January 18, 2020th