Pollination of Anemopaegma album (Bignoniaceae) with focus on floral nectar as the mediator of interactions with mutualistic and antagonistic bees

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.creatorGuimarães, Elza [UNESP]
dc.creatorNogueira, Anselmo
dc.creatorSantos, Elza Maria Guimarães [UNESP]
dc.creatorNetto, Catarina Gonçalves Dias [UNESP]
dc.creatorMachado, Silvia Rodrigues [UNESP]
dc.date2016-04-01T18:44:31Z
dc.date2016-04-01T18:44:31Z
dc.date2015
dc.date.accessioned2023-09-12T09:15:18Z
dc.date.available2023-09-12T09:15:18Z
dc.identifierhttp://www.ijprb.com/journal%20%20vol%207-2.htm
dc.identifierThe International Journal of Plant Reproductive Biology, v. 7, n. 2, p. 177-188, 2015.
dc.identifier2249-7390
dc.identifierhttp://hdl.handle.net/11449/137178
dc.identifier10.14787/ijprb.20157.2.177-188
dc.identifier6998825853556843
dc.identifier2653496390637757
dc.identifier0000-0002-1006-357X
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8786417
dc.descriptionWe focused our study on the pollination of Anemopaegma album, a Bignoniaceae species from and on the features of primary attractive, the nectar, which mediate the interaction with mutualists and antagonists bees. We investigated the floral biology and identified pollinators and nectar robbers through field observations; we determined the mating system by performing controlled experiments; we described the floral structure with emphasis on the arrangement of reproductive structures and on the floral nectary and nectar chamber using scanning electron microscope for surface micromorphology and optical microscope for nectary histology; we monitored nectar production during the first day of anthesis and the weather conditions around plants. We registered medium and large-sized bees visiting A. album flowers throughout the daylight period acting as pollinators (Euglossini and Bombini) and as nectar robbers (Oxaea and Xylocopa). Plants from the focal population showed obligate outcrossing depending on bees for sexual reproduction; and flowers showed herkogamy mechanisms that favour outcrossing. The nectar chamber is formed by the constriction caused by the dilated basis of filets covered densely by trichomes and the nectary showed histological features related to the production of high amount of nectar in a short period. In fact, the highest volume of nectar is available when flowers open; after this, just small quantities are added along the day. The hottest and driest period was around midday, when just the nectar robber bee from genus Oxaea visited the flowers. Bees that Keywords: flower-bee interactions, seasonally-dry habitats, floral nectary, hercogamy, mating system. a seasonally dry habitat, promote A. album outcrossing used diluted nectar as a floral resource and concentrated their visits during the morning when the highest volume of nectar was available and the weather conditions were more suitable.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Botânica, Instituto de Biociências, Botucatu, AC Rubião Junior, Jardim Santo Inácio (Rubião Junior), CEP 18618970, SP, Brasil
dc.descriptionUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Botânica, Instituto de Biociências, Botucatu, AC Rubião Junior, Jardim Santo Inácio (Rubião Junior), CEP 18618970, SP, Brasil
dc.descriptionCNPq: 302657/2011
dc.descriptionFAPESP: 2009/17611-7
dc.descriptionFAPESP: 2012/02110-50
dc.descriptionFAPESP: 2008/55434-7
dc.format177-188
dc.languageeng
dc.relationThe International Journal of Plant Reproductive Biology
dc.rightsAcesso restrito
dc.sourceCurrículo Lattes
dc.subjectFlower-bee interactions
dc.subjectSeasonally-dry habitats
dc.subjectFloral nectary
dc.subjectHercogamy
dc.subjectMating system
dc.titlePollination of Anemopaegma album (Bignoniaceae) with focus on floral nectar as the mediator of interactions with mutualistic and antagonistic bees
dc.typeArtigo


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