Recent Mammal Records From the Galapagos Islands

Peterson, Randolph L.

doi:10.1515/mamm.1966.30.3.441

“…Hoary Bats are also occasionally found in rabies-free Iceland, also possibly blown there by the wind; one bat was captured in the Orkney Islands, off rabies-free Scotland ( 9 ). Similarly, Hoary Bats are sometimes found in the Galapagos Islands, 966 km off the west coast of South America ( 10 ). …”

Section: Translocation Of Batsmentioning

confidence: 97%

Geographic Translocation of Bats: Known and Potential Problems

Constantine¹

2003

Emerg. Infect. Dis.

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“…In his description, Orr stated that no specimens had been taken since the original collection in 1906 and that this species could be extinct at the time of the description. A single partial skull was found on Santiago in 1965 by a researcher at the Royal Ontario Museum, leading Peterson (1966) to speculate that a population of N. swarthi may still exist on that island. However, subsequent collecting in the 1970s (Patton & Hafner, 1983;Clark, 1984) and later field studies by personnel of the Galapagos National Park revealed only R. rattus and M. musculus on Santiago.…”

Section: Conservation Status Of Rodents To 1995mentioning

confidence: 99%

“…This species, formerly known only by the type series of four specimens collected in 1906 (Orr, 1938) and a single partial skull found in 1965 (Peterson, 1966), has long been presumed extinct on Santiago. Despite periodic efforts during the past four decades to survey the island for remnant populations of N. swarthi, this species has gone undetected.…”

Section: Nesoryzomysmentioning

confidence: 99%

Rediscovery of rodents (Genus Nesoryzomys) considered extinct in the Galápagos Islands

Dowler¹,

Carroll

²

,

Edwards

³

2000

ORX

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The history of the endemic rodents of the Galapagos Islands began with the discovery of the first Galapagos rice rat species by Charles Darwin in 1835 and the last species was described as recently as 1980. Unfortunately, of the seven described species known to occur in the islands during the past 150 years, only two were known to be extant to 1995. Since then, two expeditions to the Galapagos Islands have been conducted to survey endemic rodent populations. The first confirmed the existence of a small endemic rice rat, Nesoryzomys fernandinae, on Fernandina, known previously only from owl pellet remains found in 1979. In 1997, an expedition to Santiago revealed a population of the larger rice rat N. swarthi, a species collected alive only once in 1906 and considered extinct in all recent literature on the Galapagos Islands. Survey efforts on Santa Cruz resulted only in the collection of introduced rodent species (Rattus rattus, R. norvegicus and Mus musculus). The extant species of native rodents in the Galapagos Islands now number four: N. narboroughi and N. fernandinae on Fernandina; N. swarthi on Santiago; and Oryzomys bauri on Santa Fe. Three species are found on islands where no introduced rodents or cats occur, whereas only one (N. swarthi) co-exists with R. rattus and M. musculus. Nesoryzomys darwini and N. indefessus on Santa Cruz and O. galapagoensis on San Cristobal are still considered extinct. Strategies for conservation should include monitoring islands for introduced rodents and cats, development of emergency plans in the event of introductions, and captive management.

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“…In his description, Orr stated that no specimens had been taken since the original collection in 1906 and that this species could be extinct at the time of the description. A single partial skull was found on Santiago in 1965 by a researcher at the Royal Ontario Museum, leading Peterson (1966) to speculate that a population of N. swarthi may still exist on that island. However, subsequent collecting in the 1970s ( Patton & Hafner, 1983; Clark, 1984) and later field studies by personnel of the Galápagos National Park revealed only R. rattus and M. musculus on Santiago.…”

Section: Conservation Status Of Rodents To 1995mentioning

confidence: 99%

Rediscovery of rodents (GenusNesoryzomys) considered extinct in the Galápagos Islands

Dowler¹,

Carroll

²

,

Edwards

³

2000

Oryx

View full text Add to dashboard Cite

The history of the endemic rodents of the Galapagos Islands began with the discovery of the first Galapagos rice rat species by Charles Darwin in 1835 and the last species was described as recently as 1980. Unfortunately, of the seven described species known to occur in the islands during the past 150 years, only two were known to be extant to 1995. Since then, two expeditions to the Galapagos Islands have been conducted to survey endemic rodent populations. The first confirmed the existence of a small endemic rice rat, Nesoryzomys fernandinae, on Fernandina, known previously only from owl pellet remains found in 1979. In 1997, an expedition to Santiago revealed a population of the larger rice rat N. swarthi, a species collected alive only once in 1906 and considered extinct in all recent literature on the Galapagos Islands. Survey efforts on Santa Cruz resulted only in the collection of introduced rodent species (Rattus rattus, R. norvegicus and Mus musculus). The extant species of native rodents in the Galapagos Islands now number four: N. narboroughi and N. fernandinae on Fernandina; N. swarthi on Santiago; and Oryzomys bauri on Santa Fe. Three species are found on islands where no introduced rodents or cats occur, whereas only one (N. swarthi) co-exists with R. rattus and M. musculus. Nesoryzomys darwini and N. indefessus on Santa Cruz and O. galapagoensis on San Cristobal are still considered extinct. Strategies for conservation should include monitoring islands for introduced rodents and cats, development of emergency plans in the event of introductions, and captive management .

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Recent Mammal Records From the Galapagos Islands

Cited by 10 publications

References 1 publication

Geographic Translocation of Bats: Known and Potential Problems

Geographic Translocation of Bats: Known and Potential Problems

Rediscovery of rodents (Genus Nesoryzomys) considered extinct in the Galápagos Islands

Rediscovery of rodents (GenusNesoryzomys) considered extinct in the Galápagos Islands

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