Nesoryzomys darwini

Status_ne_off_v1223290226Status_dd_off_v1223290226Status_lc_off_v1223290226Status_nt_off_v1223290226Status_vu_off_v1223290226Status_en_off_v1223290226Status_cr_off_v1223290226Status_ew_off_v1223290226Status_ex_on_v1223290226
 

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.
Evaluator/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 (Baillie and Groombridge 1996)
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)

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: IUCN 2008. 2008 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 15 October 2008.
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