Did hybridization save the Norfolk Island boobook owl Ninox novaeseelandiae undulata?
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Garnett, Stephen T; Olsen, Penelope; Butchart, Stuart H.M.; Hoffmann, Ary
Description
The population of the Norfolk Island boobook owl Ninox novaeseelandiae undulata, a nocturnal bird restricted to the Australian territory of Norfolk Island, was reduced to a single female in 1986. Deliberate introduction of two males of its nearest relative, the New Zealand boobook N. n. novaeseelandiae, as a conservation intervention has allowed the taxon to persist on Norfolk Island, albeit in hybrid form. Although declared Extinct in 2000, a re-examination of this unique situation has...[Show more]
dc.contributor.author | Garnett, Stephen T | |
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dc.contributor.author | Olsen, Penelope | |
dc.contributor.author | Butchart, Stuart H.M. | |
dc.contributor.author | Hoffmann, Ary | |
dc.date.accessioned | 2015-12-10T23:12:41Z | |
dc.identifier.issn | 0030-6053 | |
dc.identifier.uri | http://hdl.handle.net/1885/64086 | |
dc.description.abstract | The population of the Norfolk Island boobook owl Ninox novaeseelandiae undulata, a nocturnal bird restricted to the Australian territory of Norfolk Island, was reduced to a single female in 1986. Deliberate introduction of two males of its nearest relative, the New Zealand boobook N. n. novaeseelandiae, as a conservation intervention has allowed the taxon to persist on Norfolk Island, albeit in hybrid form. Although declared Extinct in 2000, a re-examination of this unique situation has concluded there is a strong argument that the taxon should be categorized as Critically Endangered because, on average, approximately half the nuclear genome of the original taxon and all the mitochondrial DNA is conserved in all living owls on the island. This thus represents a special case in which the taxon can be considered to be extant, in hybrid form, even though no pure-bred individuals survive. More generally, we suggest that, in exceptional cases, hybridization may not be a threat to highly threatened species and that guidelines are needed to determine when to consider hybrid populations as extant forms of the original taxon, and when to declare extinction through hybridization. | |
dc.publisher | Blackwell Publishing Ltd | |
dc.source | Oryx: Journal of Fauna and Flora International | |
dc.subject | Keywords: conservation status; endangered species; extinction; genome; hybridization; mitochondrial DNA; nocturnal activity; raptor; Red List; territory; New Zealand; Norfolk Island; Aves; Ninox novaeseelandiae undulata; Strigiformes Extinction; hybridization; IUCN Red List criteria; Ninox novaeseelandiae undulata; Norfolk Island; owl | |
dc.title | Did hybridization save the Norfolk Island boobook owl Ninox novaeseelandiae undulata? | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 45 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 050299 - Environmental Science and Management not elsewhere classified | |
local.identifier.ariespublication | u9511635xPUB885 | |
local.type.status | Published Version | |
local.contributor.affiliation | Garnett, Stephen T, Charles Darwin University | |
local.contributor.affiliation | Olsen, Penelope, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Butchart, Stuart H.M., Birdlife International | |
local.contributor.affiliation | Hoffmann, Ary, University of Melbourne | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 4 | |
local.bibliographicCitation.startpage | 500 | |
local.bibliographicCitation.lastpage | 504 | |
local.identifier.doi | 10.1017/S0030605311000871 | |
local.identifier.absseo | 960799 - Environmental Policy, Legislation and Standards not elsewhere classified | |
dc.date.updated | 2016-02-24T12:09:08Z | |
local.identifier.scopusID | 2-s2.0-80955126800 | |
local.identifier.thomsonID | 000297883300011 | |
Collections | ANU Research Publications |
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