Caluromysiops irrupta

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	DIDELPHIMORPHIA	DIDELPHIDAE

Scientific Name:

Caluromysiops irrupta

Species Authority

Sanborn, 1951

Common Name/s:

English	–	Black-shouldered Opossum
French	–	Opossum À Épaules Noires

Assessment Information [top]

Red List Category & Criteria:

Least Concern ver 3.1

Year Assessed:

2008

Assessor/s

Patterson, B. & Solari, S.

Evaluator/s:

Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)

Justification:
This species is list as Least Concern in light of its relatively widespread distribution, observed presence within continuous protected forested areas within its Peru range, and inferred large global population. Some populations of this species are declining due to loss of forest habitats.

History:

1996

–

Vulnerable (Baillie and Groombridge 1996)

Geographic Range [top]

Range Description:	This species is found in southeastern Peru and western Brazil (the upper Jarú River). Specimens were also captured in Leticia (extreme southeast of Colombia) and Iquitos, Peru (lzor and Pine, 1987), although these were probably examples of introduced individuals. It is found up to an altitude of 700 m, and is known for certain from around five scattered localities. There has been little sampling in the intervening habitat in Bolivia, however, likely occurs there.
Countries:	Native: Brazil; Colombia; Peru Presence uncertain: Bolivia
Range Map:	(click map to view full version)

Population [top]

Population:	This species is generally extremely rare and patchy in distribution, but in some years it can be locally common. It is known from fewer than 30 specimens (Emmons and Feer, 1997). The apparent rarity of this species is likely due to its arboreal lifestyle.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	This species is known from humid forests where it leads an arboreal and nocturnal lifestyle. There are records from bamboo adjacent to forest (Solari et al., 1998). In the dry season it feeds on the nectar of flowers, and it presumably also eats fruit. It is known only from mature rainforest. This species uses mostly the upper levels of the forest, and rarely seems to descend even to the middle levels (Emmons and Feer, 1997). Specimens in captivity have been known to eat small rodents in addition to a wide range of fruits (Eisenberg, 1989).
Systems:	Terrestrial

Habitat and Ecology:

This species is known from humid forests where it leads an arboreal and nocturnal lifestyle. There are records from bamboo adjacent to forest (Solari et al., 1998). In the dry season it feeds on the nectar of flowers, and it presumably also eats fruit. It is known only from mature rainforest. This species uses mostly the upper levels of the forest, and rarely seems to descend even to the middle levels (Emmons and Feer, 1997). Specimens in captivity have been known to eat small rodents in addition to a wide range of fruits (Eisenberg, 1989).

Systems:

Terrestrial

Threats [top]

Major Threat(s):	There are no major threats. The Peru part of its range is relatively secure, as its within several large protected areas. The range within Brazil is subject to intense habitat loss, which likely is a threat to the species.

Major Threat(s):

There are no major threats. The Peru part of its range is relatively secure, as its within several large protected areas. The range within Brazil is subject to intense habitat loss, which likely is a threat to the species.

Conservation Actions [top]

Conservation Actions:	The species is known from at least several protected areas in Peru.

Conservation Actions:

The species is known from at least several protected areas in Peru.

Citation:	Patterson, B. & Solari, S. 2008. Caluromysiops irrupta. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 21 November 2008.
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