DNA barcode divergence among species and genera of birds and fishes
COI DNA barcoding is increasingly recognized as a significant new tool for the recognition and identification of animal species. Here, publicly available barcode data are compiled and analysed for birds (657 species) and fishes (1088 species). The proportion of species that cannot be barcode-disting...
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Published in | Molecular ecology resources Vol. 9; no. 4; pp. 1077 - 1085 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Oxford, UK : Blackwell Publishing Ltd
01.07.2009
Blackwell Publishing Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | COI DNA barcoding is increasingly recognized as a significant new tool for the recognition and identification of animal species. Here, publicly available barcode data are compiled and analysed for birds (657 species) and fishes (1088 species). The proportion of species that cannot be barcode-distinguished by this marker is approximately 6.4% for birds and 2.1-2.5% for fishes. At all hierarchical taxonomic levels (species, genera, family, order, class), fish show greater mean COI divergence than birds. If two samples are barcode-identical, then for both birds and fishes, the probability that they are from the same species is 98-99%. The probability of conspecificity rapidly drops as divergence increases. At 2% COI divergence, this probability approximates to 1% for birds and 3% for fishes. The apparent difference between birds and fishes might partially reflect currently unrecognized cryptic species complexes in the latter. These probability estimates derive from pooled samples of birds and pooled samples of fishes, and will not apply in all situations. Recently evolved species complexes will have higher proportions of species that are barcode-identical. As barcode data accumulate, more refined statistical analyses will become possible. |
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Bibliography: | http://dx.doi.org/10.1111/j.1755-0998.2009.02541.x ark:/67375/WNG-NVB4LXTN-H istex:894B57871CA6144A183553138AA1E9AA3F55D6CA ArticleID:MEN2541 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1755-0998 1755-098X 1755-0998 |
DOI: | 10.1111/j.1755-0998.2009.02541.x |