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Nesoryzomys darwini

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_on
 

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA MAMMALIA RODENTIA CRICETIDAE

Scientific Name: Nesoryzomys darwini
Species Authority: Osgood, 1929
Common Name/s:
English – Darwin's Galapagos Mouse

Assessment Information [top]

Red List Category & Criteria: Extinct     ver 3.1
Year Assessed: 2008
Assessor/s: Tirira, D., Dowler, R., Boada, C. & Weksler, M.
Reviewer/s: Amori, G. (Small Nonvolant Mammal Red List Authority) & Schipper, J. (Global Mammal Assessment Team)
Justification:
N. darwini was apparently restricted to the island of Santa Cruz where it was first collected in 1906 and last seen in 1930. The extinction of this species is attributed to the introduction of the Black Rat Rattus rattus to the island in the late 1930s and due to pathogens to which the native species were susceptible or through direct competition with the introduced species. Other species introduced include House Mouse Mus musculus, the Norway Rat R. norvegicus and feral cats, all of which would also have had an impact on rodent decline and extinction. Recent repeated surveys have failed to locate any individuals of this species.
History:
1996 – Extinct
1994 – Extinct (Groombridge 1994)

Geographic Range [top]

Range Description: This species was endemic to Galápagos Islands. It was found on Santa Cruz (= Indefatigable) Island (Dowler et al., 2000; Patton and Hafner, 1983). It is extinct, last recorded in 1930 (Musser and Carleton, 1993). Recent field work by R. Dowler during 1997 did not find the species (Dowler et al. 2000).
Countries:
Regionally extinct:
Ecuador (Galápagos)
Range Map:
(click map to view full version)
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Population [top]

Population: This species is extinct.

Habitat and Ecology [top]

Habitat and Ecology: There is no information on the habitat and ecology of this species.
Systems: Terrestrial

Threats [top]

Major Threat(s): The introduction of the black rat (Rattus rattus) is the main cause of the extinction of this species.

Conservation Actions [top]

Conservation Actions: The species is extinct.
Citation: Tirira, D., Dowler, R., Boada, C. & Weksler, M. 2008. Nesoryzomys darwini. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 10 February 2012.
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