The Mexican mouse opossum (Marmosa mexicana ) is a species of North American opossum in the family Didelphidae.
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NocturnalNocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal",...
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CarnivoreA carnivore meaning 'meat eater' is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of a...
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InsectivoresAn insectivore is a carnivorous plant or animal that eats insects. An alternative term is entomophage, which also refers to the human practice of e...
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ArborealArboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some anima...
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ScansorialScansorial animals are those that are adapted to or specialized for climbing. Many animals climb not only in tress but also in other habitats, such...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Among animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
Altricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
A burrow is a hole or tunnel excavated into the ground by an animal to create a space suitable for habitation, temporary refuge, or as a byproduct ...
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starts withMarmosa mexicana is a small to moderate-sized reddish-brown marsupial, varying from bright to dull coloration. Hairs of the back, sides and outer surfaces of legs are lead-colored at the base and tipped with reddish brown. The forehead and nose are paler in color. The eye-rings are black and vary in intensity based on the region of the individual. The cheeks, throat, belly and inner surfaces of legs are yellowish with a median white pectoral area. Body hair continues onto the tail for approximately 10 mm. Its nose is pink, ears are grayish brown, and its tail is a dusky brown. It possesses a prehensile tail of equal length to its body. While appearing naked, the tail in fact has a fine layer of hair.
It is found in Belize, Costa Rica, El Salvador, Guatemala, Honduras, eastern Mexico as far north as Tamaulipas, Nicaragua, and western Panama at elevations from sea level up to 3000 m (at Volcán Tacaná); most commonly, it is found below 1800 m.
This opossum is found in primary and secondary forest, including lowland tropical rainforest, dry deciduous forest, cloud forest, and plantations, as well as in grassland. An example of its habitat is the Petenes mangroves ecoregion of the Yucatán.
The species is primarily arboreal; it is found from ground level to heights of 30 m in the canopy. It is nocturnal and solitary. Its diet includes insects and fruit. It is believed to construct nests either in burrows or above ground.The forepaws of M. mexicana have remarkable manipulative powers. It uses this ability to burrow in the ground. The burrow can be 30 mm in diameter and 40 cm in length. The mouse-opossum then fills the burrow with leaves to create a nest. More commonly it creates nests in trees, especially in abandoned bird nests. When threatened it can become aggressive, opening its mouth and hissing or making a clicking noise.
Like all marsupials, gestation is probably short, with females' giving birth to poorly developed young and most of the development taking place during lactation. It is likely that reproduction is similar to that of Marmosa robinsoni, which gives birth to 6 to 14 young after a gestation period of just 14 days. The tiny young, measuring only up to 12 millimeters, attach themselves to the mother's mammae where they may remain for around 30 days. Unlike many marsupials, female mouse opossums do not possess a pouch to protect the young as they develop. The young are so undeveloped their eyes do not open until 39 to 40 days. It is likely that the young are completely weaned after around 65 days, and they may have an incredibly short life span of only one year. Marmosa species build nests for shelter, or use abandoned bird nests, holes in trees, or banana stalks. These nest sites are unlikely to be permanent; rather, the opossum will use whatever site is available as the sun begins to rise.