Quantity versus quality: identifying the most effective pollinators of the hummingbird-pollinated Vriesea rodigasiana (Bromeliaceae)

dc.creatorRocca, MA
dc.creatorSazima, M
dc.date2013
dc.dateJAN
dc.date2014-07-30T14:19:03Z
dc.date2015-11-26T16:42:56Z
dc.date2014-07-30T14:19:03Z
dc.date2015-11-26T16:42:56Z
dc.date.accessioned2018-03-28T23:27:42Z
dc.date.available2018-03-28T23:27:42Z
dc.identifierPlant Systematics And Evolution. Springer Wien, v. 299, n. 1, n. 97, n. 105, 2013.
dc.identifier0378-2697
dc.identifierWOS:000313016900010
dc.identifier10.1007/s00606-012-0706-5
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58661
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/58661
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1273435
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionAlthough hummingbirds are considered the major bromeliad pollinators, different species may contribute differently to pollination. This study analyses the importance of different hummingbirds to pollination of Vriesea rodigasiana (Bromeliaceae), based on visitation frequency (a quantity component) and germinated pollen load per visit (a quality component) in the Atlantic rainforest of southeastern Brazil. This bromeliad flowers for 3-4 months with a peak in March. Its yellow, tubular flowers last about 13 h and demonstrate approach herkogamy. During flowering peak, Thalurania glaucopis visited more flowers than Ramphodon naevius, whereas by the end of the flowering season the latter visited more. Differences in hummingbird bill length resulted in different pollen placement and stigma contact. The short-billed T. glaucopis received pollen on the top of its head, depositing it on the center of the stigma, while the long-billed R. naevius received it on the proximal part of its bill, depositing it on the lower lobe of the stigma. Flowers visited by T. glaucopis had six times more pollen tubes than those visited by R. naevius. Our results suggest that this functional group of hummingbirds may be split into even smaller groups, namely short-billed and long-billed hummingbirds, based on different sites of pollen placement. Although both species were pollen vectors of V. rodigasiana, the short-billed T. glaucopis was its most effective pollinator in the area supporting Stebbin's principle, linking floral features and good pollinators.
dc.description299
dc.description1
dc.description97
dc.description105
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherSpringer Wien
dc.publisherWien
dc.publisherAustria
dc.relationPlant Systematics And Evolution
dc.relationPlant Syst. Evol.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectOrnithophily
dc.subjectPollen load
dc.subjectPollen placement sites
dc.subjectPollinator efficiency and importance
dc.subjectBill length
dc.subjectVisitation frequency
dc.subjectSoutheastern Brazil
dc.subjectPitcairnia Bromeliaceae
dc.subjectIpomopsis-aggregata
dc.subjectFlowering Phenology
dc.subjectVisitation Rate
dc.subjectPollen Receipt
dc.subjectRain-forest
dc.subjectRubiaceae
dc.subjectPatterns
dc.subjectSpecialization
dc.titleQuantity versus quality: identifying the most effective pollinators of the hummingbird-pollinated Vriesea rodigasiana (Bromeliaceae)
dc.typeArtículos de revistas


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