Categories
Animal Age

How old does a Hylaeamys megacephalus get? (age expectancy)

What is the maximal age a Hylaeamys megacephalus reaches?

An adult Hylaeamys megacephalus (Oryzomys megacephalus) usually gets as old as 3.75 years.

Hylaeamys megacephaluss are around 27 days in the womb of their mother. When born, they weight 3 grams (0.01 lbs) and measure 2.9 cm (0′ 2″). As a member of the Cricetidae family (genus: Oryzomys), a Hylaeamys megacephalus caries out around 3 little ones per pregnancy, which happens around 6 times a year. Fully grown, they reach a bodylength of 12.2 cm (0′ 5″).

As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.

Hylaeamys megacephalus, also known as Azara’s broad-headed oryzomys or the large-headed rice rat, is a species of rodent in the genus Hylaeamys of family Cricetidae, of which it is the type species. It is found mainly in lowland tropical rainforest from its type locality in Paraguay north through central Brazil, French Guiana, Guyana, Suriname, and Venezuela onto Trinidad and Tobago. To its west and east, other closely related species of Hylaeamys are found: H. perenensis in western Amazonia, H. acritus in Bolivia, and H. laticeps and H. oniscus in the Atlantic Forest of eastern Brazil.It was first described by Spanish naturalist Félix de Azara. Based on his description, several names were given to the animal, including Mus megacephalus Fischer, 1814 and Mus capito Olfers, 1818, both of which were largely forgotten for over a century. When capito was rediscovered in 1960, it came in use (as Oryzomys capito) for a “species” that included about all species now placed in Euryoryzomys, Hylaeamys and Transandinomys. Later, its scope was restricted, most definitively in a detailed study in 1998 by Guy Musser and coworkers, who also reinstated the older name Mus megacephalus (as Oryzomys megacephalus). In subsequent years, the western Amazonian H. perenensis was reinstated as a species and both were moved to the new genus Hylaeamys, because they are not closely related to the type species of Oryzomys.

Animals of the same family as a Hylaeamys megacephalus

Not really brothers and sisters, but from the same biological family (Cricetidae):

Animals that reach the same age as Hylaeamys megacephalus

With an average age of 3.75 years, Hylaeamys megacephalus are in good companionship of the following animals:

Animals with the same number of babies Hylaeamys megacephalus

The same number of babies at once (3) are born by:

Weighting as much as Hylaeamys megacephalus

A fully grown Hylaeamys megacephalus reaches around 57 grams (0.13 lbs). So do these animals:

Animals as big as a Hylaeamys megacephalus

Those animals grow as big as a Hylaeamys megacephalus: