What is the maximal age a Hylaeamys megacephalus reaches?
An adult Hylaeamys megacephalus (Oryzomys capito) 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 2.37 meter (7′ 10″). As a member of the Muridae 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 FĂ©lix 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 (Muridae):
- Thomas’s mosaic-tailed rat with 1 babies per pregnancy
- Western white-eared giant rat with 1 babies per pregnancy
- Long-footed water rat with 1 babies per pregnancy
- Japen rat bringing the scale to 380 grams
- Greater long-tailed hamster with 2 babies per pregnancy
- Louise’s spiny mouse bringing the scale to 20 grams
- Luzon Cordillera forest mouse bringing the scale to 34 grams
- Peruvian vesper mouse bringing the scale to 20 grams
- Lowland brush mouse getting as big as 17.6 cm (0′ 7″)
- Kimberley rock rat with 2 babies per pregnancy
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:
- Dibbler usually reaching 3 years
- Northern pygmy mouse usually reaching 3.25 years
- Fat-tailed dunnart usually reaching 4.25 years
- Alpine pika usually reaching 3 years
- Smith’s vole usually reaching 3.5 years
- Molina’s hog-nosed skunk usually reaching 3.33 years
- Woodland thicket rat usually reaching 4.33 years
- Northern common cuscus usually reaching 4 years
- Winter white dwarf hamster usually reaching 3.17 years
- Common planigale usually reaching 4 years
Animals with the same number of babies Hylaeamys megacephalus
The same number of babies at once (3) are born by:
- East African highland shrew
- Fulvous harvest mouse
- Orange-bellied Himalayan squirrel
- Woolly hare
- American hog-nosed skunk
- Bunny rat
- Mitchell’s hopping mouse
- Dolorous grass mouse
- Temminck’s mouse
- Blanford’s jerboa
Weighting as much as Hylaeamys megacephalus
A fully grown Hylaeamys megacephalus reaches around 57 grams (0.13 lbs). So do these animals:
- Pel’s pouched bat with 53 grams
- Hylaeamys oniscus with 49 grams
- Least groove-toothed swamp rat with 50 grams
- Puebla deer mouse with 59 grams
- Ungava collared lemming with 57 grams
- Diadem leaf-nosed bat with 46 grams
- Guajira mouse opossum with 46 grams
- Demonic tube-nosed fruit bat with 53 grams
- Hairy-tailed mole with 51 grams
- Rusty-bellied brush-furred rat with 62 grams
Animals as big as a Hylaeamys megacephalus
Those animals grow as big as a Hylaeamys megacephalus:
- Hainan gymnure with 13.4 cm (0′ 6″)
- Philippine tarsier with 11.7 cm (0′ 5″)
- Gray-cheeked flying squirrel with 14.2 cm (0′ 6″)
- Neblina slender opossum with 12.3 cm (0′ 5″)
- Kimberley rock rat with 14.6 cm (0′ 6″)
- Elegant water shrew with 10.9 cm (0′ 5″)
- Tundra vole with 11.6 cm (0′ 5″)
- Western chestnut mouse with 10.1 cm (0′ 4″)
- Biak glider with 14.5 cm (0′ 6″)
- African giant shrew with 10.8 cm (0′ 5″)