Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.

Cryptic diversity within bumblebees (Bombus) has the potential to undermine crucial conservation efforts designed to reverse the observed decline in many bumblebee species worldwide. Central to such efforts is the ability to correctly recognise and diagnose species. The B. lucorum complex (Bombus lu...

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Main Authors: James C Carolan, Tomás E Murray, Úna Fitzpatrick, John Crossley, Hans Schmidt, Björn Cederberg, Luke McNally, Robert J Paxton, Paul H Williams, Mark J F Brown
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2012-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22238595/pdf/?tool=EBI
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author James C Carolan
Tomás E Murray
Úna Fitzpatrick
John Crossley
Hans Schmidt
Björn Cederberg
Luke McNally
Robert J Paxton
Paul H Williams
Mark J F Brown
author_facet James C Carolan
Tomás E Murray
Úna Fitzpatrick
John Crossley
Hans Schmidt
Björn Cederberg
Luke McNally
Robert J Paxton
Paul H Williams
Mark J F Brown
author_sort James C Carolan
collection DOAJ
description Cryptic diversity within bumblebees (Bombus) has the potential to undermine crucial conservation efforts designed to reverse the observed decline in many bumblebee species worldwide. Central to such efforts is the ability to correctly recognise and diagnose species. The B. lucorum complex (Bombus lucorum, B. cryptarum and B. magnus) comprises one of the most abundant and important group of wild plant and crop pollinators in northern Europe. Although the workers of these species are notoriously difficult to diagnose morphologically, it has been claimed that queens are readily diagnosable from morphological characters. Here we assess the value of colour-pattern characters in species identification of DNA-barcoded queens from the B. lucorum complex. Three distinct molecular operational taxonomic units were identified each representing one species. However, no uniquely diagnostic colour-pattern character state was found for any of these three molecular units and most colour-pattern characters showed continuous variation among the units. All characters previously deemed to be unique and diagnostic for one species were displayed by specimens molecularly identified as a different species. These results presented here raise questions on the reliability of species determinations in previous studies and highlights the benefits of implementing DNA barcoding prior to ecological, taxonomic and conservation studies of these important key pollinators.
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spelling doaj.art-2801a2cff9ec4e0ebb26dcb5bc342def2022-12-21T23:10:48ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0171e2925110.1371/journal.pone.0029251Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.James C CarolanTomás E MurrayÚna FitzpatrickJohn CrossleyHans SchmidtBjörn CederbergLuke McNallyRobert J PaxtonPaul H WilliamsMark J F BrownCryptic diversity within bumblebees (Bombus) has the potential to undermine crucial conservation efforts designed to reverse the observed decline in many bumblebee species worldwide. Central to such efforts is the ability to correctly recognise and diagnose species. The B. lucorum complex (Bombus lucorum, B. cryptarum and B. magnus) comprises one of the most abundant and important group of wild plant and crop pollinators in northern Europe. Although the workers of these species are notoriously difficult to diagnose morphologically, it has been claimed that queens are readily diagnosable from morphological characters. Here we assess the value of colour-pattern characters in species identification of DNA-barcoded queens from the B. lucorum complex. Three distinct molecular operational taxonomic units were identified each representing one species. However, no uniquely diagnostic colour-pattern character state was found for any of these three molecular units and most colour-pattern characters showed continuous variation among the units. All characters previously deemed to be unique and diagnostic for one species were displayed by specimens molecularly identified as a different species. These results presented here raise questions on the reliability of species determinations in previous studies and highlights the benefits of implementing DNA barcoding prior to ecological, taxonomic and conservation studies of these important key pollinators.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22238595/pdf/?tool=EBI
spellingShingle James C Carolan
Tomás E Murray
Úna Fitzpatrick
John Crossley
Hans Schmidt
Björn Cederberg
Luke McNally
Robert J Paxton
Paul H Williams
Mark J F Brown
Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
PLoS ONE
title Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
title_full Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
title_fullStr Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
title_full_unstemmed Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
title_short Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex.
title_sort colour patterns do not diagnose species quantitative evaluation of a dna barcoded cryptic bumblebee complex
url https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22238595/pdf/?tool=EBI
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