Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches
11 páginas, 5 figuras, 1 tabla. [Background]Evolutionary studies of insular biotas are based mainly on extant taxa, although such biotas represent artificial subsets of original faunas because of human-caused extinctions of indigenous species augmented by introduced exotic taxa. This makes it diffic...
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ftcsic:oai:digital.csic.es:10261/48470 2024-02-11T10:06:43+01:00 Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches Rando, J. Carlos Alcover, Josep Antoni Illera, Juan Carlos 2010-09-23 http://hdl.handle.net/10261/48470 https://doi.org/10.1371/journal.pone.0012956 en eng Nature Publishing Group http://dx.doi.org/10.1371/journal.pone.0012956 Nature Chemistry 5(9): e12956 (2010) 1755-4330 http://hdl.handle.net/10261/48470 doi:10.1371/journal.pone.0012956 1755-4349 20886036 open artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.1371/journal.pone.0012956 2024-01-16T09:37:18Z 11 páginas, 5 figuras, 1 tabla. [Background]Evolutionary studies of insular biotas are based mainly on extant taxa, although such biotas represent artificial subsets of original faunas because of human-caused extinctions of indigenous species augmented by introduced exotic taxa. This makes it difficult to obtain a full understanding of the history of ecological interactions between extant sympatric species. Morphological bill variation of Fringilla coelebs and F. teydea (common and blue chaffinches) has been previously studied in the North Atlantic Macaronesian archipelagos. Character displacement between both species has been argued to explain bill sizes in sympatry. However, this explanation is incomplete, as similar patterns of bill size have been recorded in F. coelebs populations from islands with and without F. teydea. [Methodology/Principal Findings]The discovery of a new extinct species in Tenerife (Canary Islands), here named Carduelis aurelioi n. sp. (slender-billed greenfinch), provides the opportunity to study ancient ecological interactions among Macaronesian finches. To help understand the evolutionary histories of forest granivores in space and time, we have performed a multidisciplinary study combining: (1) morphological analyses and radiocarbon dating (11,460±60 yr BP) of the new taxon and, (2) molecular divergence among the extant finch species and populations in order to infer colonization times (1.99 and 1.09 My for F. teydea and F. coelebs respectively). [Conclusion/Significance]C. aurelioi, F. coelebs and F. teydea co-habited in Tenerife for at least one million years. The unique anatomical trends of the new species, namely chaffinch-like beak and modified hind and forelimbs, reveal that there was a process of divergence of resource competition traits among the three sympatric finches. The results of our study, combined with the presence of more extinct greenfinches in other Macaronesian islands with significant variation in their beak sizes, suggests that the character displacement ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Finch ENVELOPE(167.383,167.383,-72.567,-72.567) PLoS ONE 5 9 e12956 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
11 páginas, 5 figuras, 1 tabla. [Background]Evolutionary studies of insular biotas are based mainly on extant taxa, although such biotas represent artificial subsets of original faunas because of human-caused extinctions of indigenous species augmented by introduced exotic taxa. This makes it difficult to obtain a full understanding of the history of ecological interactions between extant sympatric species. Morphological bill variation of Fringilla coelebs and F. teydea (common and blue chaffinches) has been previously studied in the North Atlantic Macaronesian archipelagos. Character displacement between both species has been argued to explain bill sizes in sympatry. However, this explanation is incomplete, as similar patterns of bill size have been recorded in F. coelebs populations from islands with and without F. teydea. [Methodology/Principal Findings]The discovery of a new extinct species in Tenerife (Canary Islands), here named Carduelis aurelioi n. sp. (slender-billed greenfinch), provides the opportunity to study ancient ecological interactions among Macaronesian finches. To help understand the evolutionary histories of forest granivores in space and time, we have performed a multidisciplinary study combining: (1) morphological analyses and radiocarbon dating (11,460±60 yr BP) of the new taxon and, (2) molecular divergence among the extant finch species and populations in order to infer colonization times (1.99 and 1.09 My for F. teydea and F. coelebs respectively). [Conclusion/Significance]C. aurelioi, F. coelebs and F. teydea co-habited in Tenerife for at least one million years. The unique anatomical trends of the new species, namely chaffinch-like beak and modified hind and forelimbs, reveal that there was a process of divergence of resource competition traits among the three sympatric finches. The results of our study, combined with the presence of more extinct greenfinches in other Macaronesian islands with significant variation in their beak sizes, suggests that the character displacement ... |
format |
Article in Journal/Newspaper |
author |
Rando, J. Carlos Alcover, Josep Antoni Illera, Juan Carlos |
spellingShingle |
Rando, J. Carlos Alcover, Josep Antoni Illera, Juan Carlos Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
author_facet |
Rando, J. Carlos Alcover, Josep Antoni Illera, Juan Carlos |
author_sort |
Rando, J. Carlos |
title |
Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
title_short |
Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
title_full |
Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
title_fullStr |
Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
title_full_unstemmed |
Disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
title_sort |
disentangling ancient interactions: a new extinct passerine provides insights on character displacement among extinct and extant island finches |
publisher |
Nature Publishing Group |
publishDate |
2010 |
url |
http://hdl.handle.net/10261/48470 https://doi.org/10.1371/journal.pone.0012956 |
long_lat |
ENVELOPE(167.383,167.383,-72.567,-72.567) |
geographic |
Finch |
geographic_facet |
Finch |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://dx.doi.org/10.1371/journal.pone.0012956 Nature Chemistry 5(9): e12956 (2010) 1755-4330 http://hdl.handle.net/10261/48470 doi:10.1371/journal.pone.0012956 1755-4349 20886036 |
op_rights |
open |
op_doi |
https://doi.org/10.1371/journal.pone.0012956 |
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PLoS ONE |
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5 |
container_issue |
9 |
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e12956 |
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