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dc.contributor.author
Avila Jr, Rubem S.
dc.contributor.author
Rocha, Diego Ismael
dc.contributor.author
Nunes, Carlos E. P.
dc.contributor.author
Galetto, Leonardo
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dc.contributor.author
Dornelas, Marcelo Carnier
dc.contributor.author
Sazima, Marlies
dc.date.available
2023-06-13T15:04:12Z
dc.date.issued
2022-08
dc.identifier.citation
Avila Jr, Rubem S.; Rocha, Diego Ismael; Nunes, Carlos E. P.; Galetto, Leonardo; Dornelas, Marcelo Carnier; et al.; Divergent strategies of nectar secretion in two bat-pollinated Passiflora species; Elsevier Gmbh; Flora; 293; 8-2022; 1-8
dc.identifier.issn
0367-2530
dc.identifier.uri
http://hdl.handle.net/11336/200463
dc.description.abstract
The secretion dynamics and chemical compositions of flower nectar can vary according to the plant physiology and the pollinator type. Bat-pollinated flowers are commonly associated with nocturnal nectar secretion as well as large amounts of nectar per flower, which is generally diluted and composed mostly of hexose sugars. The nectar traits in bat-pollinated Passiflora species are poorly understood and in this work, we describe these for two such species. We conducted field experiments to assess the nectar secretion dynamics of two species with nocturnal anthesis and similar colours and structures, performed chemical analyses of the sugar components of nectar from these two species, and combined these data with systematic observations of floral visitors. The nectar dynamics of both Passiflora species are similar to those of other bat-pollinated species. In Passiflora mucronata, nectar secretion starts before the flower opens, which occurs around 04h00, with secretion ending after 10h00. Passiflora setacea starts secreting nectar at the time of flower opening, around 22h00, finishing secretion between 04h00 and 06h00. In P. setacea, the final period of anthesis is characterised by active nectar resorption. The different blooming times of these two bat-pollinated passionflowers and the significant differences in their nectar secretion schedules suggest a divergent nectar secretion dynamics: the nectar of P. mucronata is made available only by the end of the bats’ foraging activity period, continuing throughout the morning, while P. setacea secretes nectar earlier, with very little overlap in the secretion period between the species. We hypothesise that this segregation in time helps avoid the negative effects from competition for pollinators or pollen interference between flowers with a similar structure, while the outstanding nectar traits and the constant production of flowers throughout the year make these closely related vines important nectar sources for their bat pollinators where they co-occur.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Gmbh
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ATLANTIC FOREST
dc.subject
BAT POLLINATION
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COEXISTENCE
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NECTAR TRAITS
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PASSIFLORACEAE
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POLLINATOR EFFICACY
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Divergent strategies of nectar secretion in two bat-pollinated Passiflora species
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-06-12T13:50:19Z
dc.journal.volume
293
dc.journal.pagination
1-8
dc.journal.pais
Alemania
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dc.description.fil
Fil: Avila Jr, Rubem S.. Universidade Federal do Pampa; Brasil
dc.description.fil
Fil: Rocha, Diego Ismael. Universidade Federal de Vicosa; Brasil
dc.description.fil
Fil: Nunes, Carlos E. P.. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Galetto, Leonardo. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
dc.description.fil
Fil: Dornelas, Marcelo Carnier. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Sazima, Marlies. Universidade Estadual de Campinas; Brasil
dc.journal.title
Flora
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.flora.2022.152114
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0367253022001116
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