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<title lang=en>Pollination of Philodendron acutatum (Araceae) in the atlantic forest of northeastern Brazil: a single scarab beetle species guarantees high fruit set</title>
<creator>Maia, Artur Campos Dália</creator>
<creator>Schlindwein, Clemens</creator>
<creator>Navarro, Daniela Maria Almeida Ferraz</creator>
<creator>Gibernau, Marc</creator>
<contributor>Université de Lille, Sciences et Technologies</contributor>
<contributor>Institut des nanotechnologies de Lyon - Site d'Ecully (INL) ; École Centrale de Lyon (ECL) - Université Claude Bernard Lyon 1 (UCBL) - Institut National des Sciences Appliquées de Lyon (INSA Lyon) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>International Journal of Plant Sciences</source>
<identifier>hal-01094225</identifier>
<identifier>https://hal-agroparistech.archives-ouvertes.fr/hal-01094225</identifier>
<source>https://hal-agroparistech.archives-ouvertes.fr/hal-01094225</source>
<source>International Journal of Plant Sciences, 2010, 171 (7), pp.740-748. 〈10.1086/654846〉</source>
<identifier>DOI : 10.1086/654846</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1086/654846</relation>
<language>en</language>
<subject lang=en>Cyclocephala</subject>
<subject lang=en>Floral volatiles</subject>
<subject lang=en>Pollination specificity</subject>
<subject lang=en>Reproductive success</subject>
<subject lang=en>Thermogenesis</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<subject>[SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Philodendron acutatum (Araceae) is a hemiepiphyte common to the Atlantic Forest of northeastern Brazil. In two localities, we studied the species’ breeding system and associations with flower-visiting insects, along with an analysis of its floral scent composition. The fruit set of self-incompatible P. acutatum was high, more than 90%, and inflorescences were exclusively pollinated by one species of scarab beetle, Cyclocephala celata (Scarabaeidae, Dynastinae). Pollinators are drawn toward the inflorescences at dusk by strong floral fragrancesgiven off during the female phase of anthesis, along with endogenous heating of the spadix, whose temperatures were recorded at more than 11C above ambient air. Two other species of flower-visiting Cyclocephala were also consistently recovered in blacklight trappings during the flowering period of P. acutatum. The fact that only C. celata was found in association with P. acutatum suggests a local reproductivedependence of the plant to this scarab beetle species. Dihydro-b-ionone and 2-hydroxy-5-methyl-3-hexanone, a rare volatile molecule so far unreported as a floral compound, together accounted for more than 97% of the unique scent composition of P. acutatum and might be involved in specific attraction of C. celata.</description>
<date>2010-09</date>
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