Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0102-33062018abb0241 http://hdl.handle.net/11449/211358 |
Resumo: | Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators. Considering the specialization of hummingbird-pollinated bromeliads, we expect a close relationship between nectar ecophysiology and the needs of the main pollinators. In this sense, we studied the nectar ecology of the endemic epiphytic bromeliad Vriesea altodaserrae by assessing its nectar traits to address the following questions: i) do flowers respond to successive experimental removals of nectar? ii) is hummingbird visitation frequency related to nectar secretion pattern? We found that V. altodaserrae depended completely on hummingbirds for sexual reproduction, and nectar composition was consistent with that of most hummingbird-pollinated species. Most of the nectar was secreted at bud stage and, if not removed, flowers reabsorb it at the end of their lifespan. Total nectar production did not change after successive removals, and nectar secretion rhythm did not affect the frequency of hummingbird visits. Vriesea altodaserrae was visited by two-thirds of the hummingbird species recorded at the study site, but especially by those of Trochilinae subfamily, suggesting specialization for this group of hummingbirds and highlighting the importance this endemic bromeliad as a keystone species in areas of highland Atlantic forest. |
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Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation patternBromeliaceaenectar traitsPhaethornithinaeTrochilidaespecialized pollination systemsugar chemical compositionHummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators. Considering the specialization of hummingbird-pollinated bromeliads, we expect a close relationship between nectar ecophysiology and the needs of the main pollinators. In this sense, we studied the nectar ecology of the endemic epiphytic bromeliad Vriesea altodaserrae by assessing its nectar traits to address the following questions: i) do flowers respond to successive experimental removals of nectar? ii) is hummingbird visitation frequency related to nectar secretion pattern? We found that V. altodaserrae depended completely on hummingbirds for sexual reproduction, and nectar composition was consistent with that of most hummingbird-pollinated species. Most of the nectar was secreted at bud stage and, if not removed, flowers reabsorb it at the end of their lifespan. Total nectar production did not change after successive removals, and nectar secretion rhythm did not affect the frequency of hummingbird visits. Vriesea altodaserrae was visited by two-thirds of the hummingbird species recorded at the study site, but especially by those of Trochilinae subfamily, suggesting specialization for this group of hummingbirds and highlighting the importance this endemic bromeliad as a keystone species in areas of highland Atlantic forest.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual de Campinas, Instituto de BiologiaUniversidade de TaubatéUniversidad Nacional de Córdoba, Instituto Multidisciplinario de Biología VegetalUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Instituto de BiociênciasUniversidade Estadual Paulista “Júlio de Mesquita Filho”, Instituto de BiociênciasCNPq: 303084/2011-1; 148221/2012-2Sociedade Botânica do BrasilUniversidade Estadual de Campinas (UNICAMP)Universidade de TaubatéUniversidad Nacional de CórdobaUniversidade Estadual Paulista (Unesp)Nunes, Carlos E. P.Briet, JoseildoGaletto, LeonardoSazima, MarliesAmorim, Felipe W. [UNESP]2021-07-14T10:23:10Z2021-07-14T10:23:10Z2018-09-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article479-486application/pdfhttp://dx.doi.org/10.1590/0102-33062018abb0241Acta Botanica Brasilica. Sociedade Botânica do Brasil, v. 32, n. 3, p. 479-486, 2018.0102-33061677-941Xhttp://hdl.handle.net/11449/21135810.1590/0102-33062018abb0241S0102-33062018000300479S0102-33062018000300479.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Botanica Brasilicainfo:eu-repo/semantics/openAccess2023-11-03T06:10:04Zoai:repositorio.unesp.br:11449/211358Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-03T06:10:04Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
title |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
spellingShingle |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern Nunes, Carlos E. P. Bromeliaceae nectar traits Phaethornithinae Trochilidae specialized pollination system sugar chemical composition |
title_short |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
title_full |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
title_fullStr |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
title_full_unstemmed |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
title_sort |
Nectar ecology of the endemic epiphytic hummingbird-pollinated bromeliad Vriesea altodaserrae: secretion dynamics and pollinator visitation pattern |
author |
Nunes, Carlos E. P. |
author_facet |
Nunes, Carlos E. P. Briet, Joseildo Galetto, Leonardo Sazima, Marlies Amorim, Felipe W. [UNESP] |
author_role |
author |
author2 |
Briet, Joseildo Galetto, Leonardo Sazima, Marlies Amorim, Felipe W. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Campinas (UNICAMP) Universidade de Taubaté Universidad Nacional de Córdoba Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Nunes, Carlos E. P. Briet, Joseildo Galetto, Leonardo Sazima, Marlies Amorim, Felipe W. [UNESP] |
dc.subject.por.fl_str_mv |
Bromeliaceae nectar traits Phaethornithinae Trochilidae specialized pollination system sugar chemical composition |
topic |
Bromeliaceae nectar traits Phaethornithinae Trochilidae specialized pollination system sugar chemical composition |
description |
Hummingbirds are the main pollinators of most bromeliad species, whose nectar traits usually respond to the selective pressures imposed by pollinators. Considering the specialization of hummingbird-pollinated bromeliads, we expect a close relationship between nectar ecophysiology and the needs of the main pollinators. In this sense, we studied the nectar ecology of the endemic epiphytic bromeliad Vriesea altodaserrae by assessing its nectar traits to address the following questions: i) do flowers respond to successive experimental removals of nectar? ii) is hummingbird visitation frequency related to nectar secretion pattern? We found that V. altodaserrae depended completely on hummingbirds for sexual reproduction, and nectar composition was consistent with that of most hummingbird-pollinated species. Most of the nectar was secreted at bud stage and, if not removed, flowers reabsorb it at the end of their lifespan. Total nectar production did not change after successive removals, and nectar secretion rhythm did not affect the frequency of hummingbird visits. Vriesea altodaserrae was visited by two-thirds of the hummingbird species recorded at the study site, but especially by those of Trochilinae subfamily, suggesting specialization for this group of hummingbirds and highlighting the importance this endemic bromeliad as a keystone species in areas of highland Atlantic forest. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09-15 2021-07-14T10:23:10Z 2021-07-14T10:23:10Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/0102-33062018abb0241 Acta Botanica Brasilica. Sociedade Botânica do Brasil, v. 32, n. 3, p. 479-486, 2018. 0102-3306 1677-941X http://hdl.handle.net/11449/211358 10.1590/0102-33062018abb0241 S0102-33062018000300479 S0102-33062018000300479.pdf |
url |
http://dx.doi.org/10.1590/0102-33062018abb0241 http://hdl.handle.net/11449/211358 |
identifier_str_mv |
Acta Botanica Brasilica. Sociedade Botânica do Brasil, v. 32, n. 3, p. 479-486, 2018. 0102-3306 1677-941X 10.1590/0102-33062018abb0241 S0102-33062018000300479 S0102-33062018000300479.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Botanica Brasilica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
479-486 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1797789597550247936 |