Quantity Versus Quality: Identifying The Most Effective Pollinators Of The Hummingbird-pollinated Vriesea Rodigasiana (bromeliaceae)

dc.creatorRocca M.A.
dc.creatorSazima M.
dc.date2013
dc.date2015-06-25T19:17:03Z
dc.date2015-11-26T15:15:02Z
dc.date2015-06-25T19:17:03Z
dc.date2015-11-26T15:15:02Z
dc.date.accessioned2018-03-28T22:24:56Z
dc.date.available2018-03-28T22:24:56Z
dc.identifier
dc.identifierPlant Systematics And Evolution. , v. 299, n. 1, p. 97 - 105, 2013.
dc.identifier3782697
dc.identifier10.1007/s00606-012-0706-5
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84871905307&partnerID=40&md5=38a3d78c5156e37729f4fa81faade6a3
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/89516
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/89516
dc.identifier2-s2.0-84871905307
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1258951
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. © 2012 Springer-Verlag.
dc.description299
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dc.description97
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dc.languageen
dc.publisher
dc.relationPlant Systematics and Evolution
dc.rightsfechado
dc.sourceScopus
dc.titleQuantity Versus Quality: Identifying The Most Effective Pollinators Of The Hummingbird-pollinated Vriesea Rodigasiana (bromeliaceae)
dc.typeArtículos de revistas


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