Transandinomys talamancae
Oryzomys talamancae is a rodent in the genus Transandinomys. It occurs from Costa Rica to southwestern Ecuador and northern Venezuela. The fur is soft and is reddish to brownish on the upperparts and white to buff on the underparts. The tail is dark brown above and lighter below and the ears and feet are long.
About Transandinomys talamancae in brief
Oryzomys talamancae is a rodent in the genus Transandinomys that occurs from Costa Rica to southwestern Ecuador and northern Venezuela. With a body mass of 38 to 74 g, it is a medium-sized rice rat. The fur is soft and is reddish to brownish on the upperparts and white to buff on the underparts. The tail is dark brown above and lighter below and the ears and feet are long. The vibrissae are very long. In the skull, the rostrum is long and the braincase is low. The number of chromosomes varies from 34 to 54. It breeds throughout the year, although few individuals survive for more than a year. After a gestation period of about 28 days, two to five young are born, which reach sexual maturity within two months. A variety of parasites occur on this species. Widespread and common, it is of no conservation concern. The species was first described in 1891 by Joel Asaph Allen and thereafter a variety of names, now considered synonyms, were applied to local populations. It was lumped into a widespread species. from the 1960s until the 1980s and the current allocation of synonyms dates from 1998. It is not closely related to the type species of that genus and was therefore moved to a separate genus in 2006. It lives on the ground and eats plants and insects. Males move more and have larger home ranges than most females.
In 1960, Philip Hershkovitz listed tal amancae, medius, magdalenae, sylvaticus, and mollipilosus among the many synonyms of “OryZomys laticeps”. A name later replaced by OryzOMys capito was used to refer to the species. In 1983, Guy Musser and Marina Williams also found that the holotype of Oryus villos, the affinities of which had been disputed, consisted of a skin of a skull and a skull. They included castaneus and sylvaticus in their list of synonyms. They also examined the holotypes of panamensis, carrikeri, and magdalus medius and identified them as examples of Oyzomancae. They found that they included mollilus medus, castaneas, sylvi, and syvani in the list of examples of Ory zomaneus and they included talamancAE in the name of the skin, making them a synonym of ORYzomaneas. In 1998, Alfred Gardner again listed it as a valid species, but again in 1983, when Alfred Gardner found that it was a more fully documented species. It shares this genus with Transand inomys bolivaris, which has even longer vibrissAE; the two overlap broadly in distribution and are morphologically similar. It remains the only member of its own species group, which Goldman regarded as closest to Ory Zomanea bombycinus.
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This page is based on the article Transandinomys talamancae published in Wikipedia (as of Oct. 30, 2020) and was automatically summarized using artificial intelligence.
