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How flower colour signals allure bees and hummingbirds: a community-level test of the bee avoidance hypothesis.
de Camargo, Maria Gabriela Gutierrez; Lunau, Klaus; Batalha, Marco Antônio; Brings, Sebastian; de Brito, Vinícius Lourenço Garcia; Morellato, Leonor Patrícia Cerdeira.
Afiliação
  • de Camargo MGG; Departamento de Botânica, Laboratório de Fenologia, Instituto de Biociências, UNESP-Universidade Estadual Paulista, 13506-900, Rio Claro, São Paulo, Brasil.
  • Lunau K; Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University Düsseldorf, 40225, Düsseldorf, Germany.
  • Batalha MA; Department of Botany, Federal University of São Carlos, 13565-905, São Carlos, São Paulo, Brazil.
  • Brings S; Department Biology, Institute of Sensory Ecology, Heinrich-Heine-University Düsseldorf, 40225, Düsseldorf, Germany.
  • de Brito VLG; Instituto de Biologia, Universidade Federal de Uberlândia, 38400-902, Uberlândia, Minas Gerais, Brazil.
  • Morellato LPC; Departamento de Botânica, Laboratório de Fenologia, Instituto de Biociências, UNESP-Universidade Estadual Paulista, 13506-900, Rio Claro, São Paulo, Brasil.
New Phytol ; 222(2): 1112-1122, 2019 04.
Article em En | MEDLINE | ID: mdl-30444536
Colour signals are the main floral trait for plant-pollinator communication. Owing to visual specificities, flower visitors exert different selective pressures on flower colour signals of plant communities. Although they evolved to attract pollinators, matching their visual sensitivity and colour preferences, floral signals may also evolve to avoid less efficient pollinators and antagonistic flower visitors. We evaluated evidence for the bee avoidance hypothesis in a Neotropical community pollinated mainly by bees and hummingbirds, the campo rupestre. We analysed flower reflectance spectra, compared colour variables of bee-pollinated flowers (bee-flowers; 244 species) and hummingbird-pollinated flowers (hummingbird-flowers; 39 species), and looked for evidence of bee sensorial exclusion in hummingbird-flowers. Flowers were equally contrasting for hummingbirds. Hummingbird-flowers were less conspicuous to bees, reflecting mainly long wavelengths and avoiding red-blind visitors. Bee-flowers reflected more short wavelengths, were more conspicuous to bees (higher contrasts and spectral purity) than hummingbird-flowers and displayed floral guides more frequently, favouring flower attractiveness, discrimination and handling by bees. Along with no phylogenetic signal, the differences in colour signal strategies between bee- and hummingbird-flowers are the first evidence of the bee avoidance hypothesis at a community level and reinforce the role of pollinators as a selective pressure driving flower colour diversity.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aprendizagem da Esquiva / Abelhas / Aves / Pigmentação / Flores / Modelos Biológicos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: New Phytol Assunto da revista: BOTANICA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aprendizagem da Esquiva / Abelhas / Aves / Pigmentação / Flores / Modelos Biológicos Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: New Phytol Assunto da revista: BOTANICA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido