Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1

We experimentally tested the hypothesis that the extensive within-plant variation of nectar sugar composition in Helleborus foetidus (Ranunculaceae) and other species results from differences between flowers and nectaries in pollinator visitation history. Experiments were conducted to mimic single-n...

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Detalles Bibliográficos
Autores: Canto, Azucena, Herrera, Carlos M., Medrano, Mónica, Pérez, Ricardo, García Jiménez, Isabel M.
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/38711
Acceso en línea:http://hdl.handle.net/10261/38711
Access Level:acceso abierto
Palabra clave:Bumblebees
Helleborus foetidus
nectar sugar composition
nectarivorous yeasts
pollinator visitation
Ranun- culaceae
Spain
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spelling Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1Canto, AzucenaHerrera, Carlos M.Medrano, MónicaPérez, RicardoGarcía Jiménez, Isabel M.BumblebeesHelleborus foetidusnectar sugar compositionnectarivorous yeastspollinator visitationRanun- culaceaeSpainWe experimentally tested the hypothesis that the extensive within-plant variation of nectar sugar composition in Helleborus foetidus (Ranunculaceae) and other species results from differences between flowers and nectaries in pollinator visitation history. Experiments were conducted to mimic single-nectary visits by wild-caught individuals of the main bee pollinators of H. foetidus, which were assayed for their capacity to modify the sugar composition of natural and artificial nectar. Experimental nectar probing with bee mouthparts induced extensive changes in proportional sugar composition 48 h after treatment, and bee taxa differed widely in their effects. Nectar probing by Andrena, medium-sized Anthophoridae, Apis mellifera, and Lasioglossum had no subse- quent effects on nectar sugar composition, while probing by Bombus terrestris and B. pratorum induced an extensive reduction in percentage sucrose, a marked increase in percentage fructose, and a slight increase in percentage glucose. Results support the hypothesis that stochastic variations among flowers or nectaries in the taxonomic identity of recent visitors and their relative visita- tion frequencies may eventually generate very small-scale mosaics in nectar sugar composition. Changes in nectar sugar composi- tion following bumblebee probing may be the consequence of nectar contamination with pollinator-borne nectarivorous yeastsPeer reviewedBotanical Society of America201120112008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/38711reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://www.amjbot.org/content/95/3/315.full.pdf+htmlinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/387112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
title Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
spellingShingle Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
Canto, Azucena
Bumblebees
Helleborus foetidus
nectar sugar composition
nectarivorous yeasts
pollinator visitation
Ranun- culaceae
Spain
title_short Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
title_full Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
title_fullStr Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
title_full_unstemmed Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
title_sort Pollinators foraging modifies nectar sugar composition in Helleborus foetidus (Ranunculaceae): an experimental test1
dc.creator.none.fl_str_mv Canto, Azucena
Herrera, Carlos M.
Medrano, Mónica
Pérez, Ricardo
García Jiménez, Isabel M.
author Canto, Azucena
author_facet Canto, Azucena
Herrera, Carlos M.
Medrano, Mónica
Pérez, Ricardo
García Jiménez, Isabel M.
author_role author
author2 Herrera, Carlos M.
Medrano, Mónica
Pérez, Ricardo
García Jiménez, Isabel M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bumblebees
Helleborus foetidus
nectar sugar composition
nectarivorous yeasts
pollinator visitation
Ranun- culaceae
Spain
topic Bumblebees
Helleborus foetidus
nectar sugar composition
nectarivorous yeasts
pollinator visitation
Ranun- culaceae
Spain
description We experimentally tested the hypothesis that the extensive within-plant variation of nectar sugar composition in Helleborus foetidus (Ranunculaceae) and other species results from differences between flowers and nectaries in pollinator visitation history. Experiments were conducted to mimic single-nectary visits by wild-caught individuals of the main bee pollinators of H. foetidus, which were assayed for their capacity to modify the sugar composition of natural and artificial nectar. Experimental nectar probing with bee mouthparts induced extensive changes in proportional sugar composition 48 h after treatment, and bee taxa differed widely in their effects. Nectar probing by Andrena, medium-sized Anthophoridae, Apis mellifera, and Lasioglossum had no subse- quent effects on nectar sugar composition, while probing by Bombus terrestris and B. pratorum induced an extensive reduction in percentage sucrose, a marked increase in percentage fructose, and a slight increase in percentage glucose. Results support the hypothesis that stochastic variations among flowers or nectaries in the taxonomic identity of recent visitors and their relative visita- tion frequencies may eventually generate very small-scale mosaics in nectar sugar composition. Changes in nectar sugar composi- tion following bumblebee probing may be the consequence of nectar contamination with pollinator-borne nectarivorous yeasts
publishDate 2008
dc.date.none.fl_str_mv 2008
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/38711
url http://hdl.handle.net/10261/38711
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.amjbot.org/content/95/3/315.full.pdf+html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Botanical Society of America
publisher.none.fl_str_mv Botanical Society of America
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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