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Ant visitation to extrafloral nectaries decreases herbivory and increases fruit set in Chamaecrista debilis (Fabaceae) in a Neotropical savanna

Studies of ant–plant relationships elucidate how top-down effects of the third trophic level can affect the biomass, richness, and/or species composition of plants. Although widespread in the neotropics, few studies have so far examined the direct effects of ants on plant fitness. Here, through expe...

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Published in:	Flora. Morphologie, Geobotanik, Oekophysiologie Geobotanik, Oekophysiologie, 2010-11, Vol.205 (11), p.754-756
Main Authors:	do Nascimento, Elynton Alves, Del-Claro, Kleber
Format:	Article
Language:	English
Subjects:	Biomass Caesalpinioidea Cerrado Chamaecrista Fabaceae Formicidae fruit set herbivores leaves Mutualism nectaries plant-insect relations plants Plant–animal interaction savannas species diversity tropics
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description	Studies of ant–plant relationships elucidate how top-down effects of the third trophic level can affect the biomass, richness, and/or species composition of plants. Although widespread in the neotropics, few studies have so far examined the direct effects of ants on plant fitness. Here, through experimental manipulation (ant-exclusion) under natural conditions, we examined the effect of ant visitation to extrafloral nectaries on leaf herbivory and fruit set in Chamaecrista debilis in the Brazilian savanna. As opposed to other Chamaecrista species, our results showed that visiting ants (15 species) significantly reduce herbivory and increase fruit set by more than 50% compared to plants from which ants were excluded. This mutualistic system is facultative in nature, and corroborates the potential beneficial role of exudate-feeding ants as anti-herbivore agents of tropical plants.
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source	ScienceDirect Freedom Collection 2022-2024
subjects	Biomass Caesalpinioidea Cerrado Chamaecrista Fabaceae Formicidae fruit set herbivores leaves Mutualism nectaries plant-insect relations plants Plant–animal interaction savannas species diversity tropics
title	Ant visitation to extrafloral nectaries decreases herbivory and increases fruit set in Chamaecrista debilis (Fabaceae) in a Neotropical savanna
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