No data exists on the communication and perception abilities of Thylamys macrurus.
Perception Channels: tactile ; chemical
The IUCN considers Thylamys macrurus Near Threatened as a result of extensive habitat conversion to agriculture and as a result of logging.
IUCN Red List of Threatened Species: near threatened
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
No data exists on the economic value of Thylamys macrurus on humans.
No data exists on the economic value of Thylamys macrurus on humans.
Little data exists on the ecosystem roles of Thylamys macrurus. Caceres et al. (2007) identified one tick and one louse species living on Thylamys macrurus individuals.
Commensal/Parasitic Species:
Little is known about the diet of this species. Most Thylamys species primarily consume insects.
Thylamys macrurus is distributed in Paraguay east of the Rió Paraguay and across the Brazilian border into the state of Mato Grosso do Sul.
Biogeographic Regions: neotropical (Native )
In Brazil, this species has been captured in the Cerrado, a relatively dry, savanna habitat. In Paraguay, this species has been captured in subtropical moist forest. Little is known about its natural history.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: savanna or grassland ; forest
No data exists on the lifespan of Thylamys macrurus.
Thylamys macrurus is larger than other Thylamys species on average, but possesses most of the other external features shared by members of this genus, including an incrassate (fatty) tail. Caceres et al. (2007) found that males are significantly larger than females (52.4 g vs. 41.0 g). Voss et al. (2009) noted a range in mass from 30 g to 57 g, with total body lengths ranging from 251 mm to 308 mm.
Range mass: 30 to 57 g.
Range length: 251 to 308 mm.
Sexual Dimorphism: male larger
Other Physical Features: endothermic ; bilateral symmetry
No data exists on the predators of Thylamys macrurus.
No data exists on the mating system of Thylamys macrurus.
No data exists on the reproductive behavior of Thylamys macrurus.
Breeding interval: Not known.
Breeding season: Not known.
Key Reproductive Features: gonochoric/gonochoristic/dioecious (sexes separate); sexual
No data exists on the reproductive behavior of Thylamys macrurus.
Parental Investment: altricial ; female parental care ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female)
The Paraguayan fat-tailed mouse opossum (Thylamys macrurus) is a species of opossum in the family Didelphidae. It is found in forested areas of Brazil and Paraguay.[2] It is known only from a few specimens. For two listed specimens, one had a head-and-body length of about 135 mm and a tail length of about 140 mm, while the other had a head-and-body length of about 120 mm and a tail length of about 155 mm. Most of its fur is gray, but the shoulder areas are reddish gray, and the ventral fur is pure white or creamy white. There is also a ring of black fur surrounding each eye. The ventral surface of the tail is white. The dorsal surface of the tail is gray for the first one third to one half of its length (going from the base to the tip); the remainder of the dorsal surface of the tail is white. The tail is hairless except for about its first ten mm (going from the base to the tip).[3] Although the genus Thylamys is characterized by fat storage in the tail, there is no evidence that this species stores fat in its tail.[4]
The Paraguayan fat-tailed mouse opossum (Thylamys macrurus) is a species of opossum in the family Didelphidae. It is found in forested areas of Brazil and Paraguay. It is known only from a few specimens. For two listed specimens, one had a head-and-body length of about 135 mm and a tail length of about 140 mm, while the other had a head-and-body length of about 120 mm and a tail length of about 155 mm. Most of its fur is gray, but the shoulder areas are reddish gray, and the ventral fur is pure white or creamy white. There is also a ring of black fur surrounding each eye. The ventral surface of the tail is white. The dorsal surface of the tail is gray for the first one third to one half of its length (going from the base to the tip); the remainder of the dorsal surface of the tail is white. The tail is hairless except for about its first ten mm (going from the base to the tip). Although the genus Thylamys is characterized by fat storage in the tail, there is no evidence that this species stores fat in its tail.
