Based largely on the elevation at which specimens have been collected, this species probably occurs in premontane and montane rainforest. (Creighton and Gardner, 2007)
- Range elevation
- 1300 to 2100 m
- 4265.09 to 6889.76 ft
Like other species of mouse opossums, is a small, pouchless marsupial with large, membranous ears; prominent eyes; a mask of dark fur surrounding the eyes, and a long, slender, prehensile tail. The dorsal fur is dark brown and the ventral fur is gray-based buffy. Among other diagnostic traits, this species differs from other species of Marmosa by lacking postorbital processes and by having narrow zygomatic arches. is known from just a few specimens, so the maxima and minima provided are unlikely to represent the full range of morphometric variation in this species. It is not known if is sexually dimorphic or not, but males are larger than females in many other closely related species. (Creighton and Gardner, 2007; Ochoa, 1985)
- Range mass
- 30 to 56 g
- 1.06 to 1.97 oz
- Range length
- 112 to 130 mm
- 4.41 to 5.12 in
Nothing is known about the mating system of this species.
Females presumably nurse neonatal young, groom them, and protect them from predators, but other forms of parental investment are unknown.
- Parental Investment
- female parental care
Nothing is known about the lifespan of this species in the wild or in captivity.
Nothing has been recorded about the behavior of Marmosa are known to be nocturnal and arboreal/scansorial., but other species of
Nothing is known about the home range of this species.
Communication and Perception
The eyes, ears, nasal turbinates (thin bones that support olfactory epithelium), and tactile hairs are well developed in this species (as in other opossums), so vision, hearing, and touch are probably important senses. (Tate, 1933)
No definite information is currently available about the food habits of this species, but its dentition is similar to that of other species of Marmosa which are known to be insectivorous and to eat fruit occasionally.
- Animal Foods
- Plant Foods
- Anti-predator Adaptations
insects). It is probably eaten by snakes, owls, and carnivorans; and it is certainly host to many species of invertebrate ecto- and endo-parasites. Probable ectoparasites include species of Arachnida (Acari: mites) and Insecta (Siphonaptera: fleas). Probable endoparasites include species of Acanthocephala (spiny-headed worms), Cestoda (tapeworms), Digenea (flukes), and Nematoda (roundworms).is probably a primary consumer (of fruit) and a secondary consumer (of
Economic Importance for Humans: Positive
It is unlikely that this species is of any positive economic importance.
Economic Importance for Humans: Negative
There are no known adverse effects ofon humans.
Robert Voss (author), American Museum of Natural History, Sharon Jansa (editor), American Museum of Natural History, Alexa Unruh (editor), Animal Diversity Web Staff.
living in the southern part of the New World. In other words, Central and South America.
uses sound to communicate
Referring to an animal that lives in trees; tree-climbing.
- bilateral symmetry
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
an animal that mainly eats meat
uses smells or other chemicals to communicate
having markings, coloration, shapes, or other features that cause an animal to be camouflaged in its natural environment; being difficult to see or otherwise detect.
animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.
- female parental care
parental care is carried out by females
An animal that eats mainly insects or spiders.
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
having the capacity to move from one place to another.
This terrestrial biome includes summits of high mountains, either without vegetation or covered by low, tundra-like vegetation.
- native range
the area in which the animal is naturally found, the region in which it is endemic.
active during the night
rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.
reproduction that includes combining the genetic contribution of two individuals, a male and a female
uses touch to communicate
Living on the ground.
the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.
uses sight to communicate
Creighton, G., A. Gardner. 2007. Genus Marmosa Gray, 1821. Pp. 51-61 in A Gardner, ed. Mammals of South America, Vol. 1 (Marsupials, Xenarthrans, Shrews, and Bats). Chicago: University of Chicago Press.
Gutierrez, E., S. Jansa, R. Voss. 2010. Molecular systematics of mouse opossums (Didelphidae: Marmosa): assessing species limits using mitochondrial DNA sequences, with comments on phylogenetic relationships and biogeography. American Museum Novitates, 3692: 1-22.
Ochoa, J. 1985. Nueva localidad para Marmosa tyleriana (Marsupialia: Didelphidae) en Venezuela. Donana, Acta Vertebrata, 12: 183-185.
Rossi, R., R. Voss, D. Lunde. 2010. A revision of the didelphid marsupial genus Marmosa. Part 1. The species in Tate's 'mexicana' and 'mitis' sections and other closely related forms. Bulletin of the American Museum of Natural History, 334: 1-81.
Tate, G. 1933. A systematic revision of the marsupial genus Marmosa. Bulletin of the American Museum of Natural History, 66: 1-250.