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Despite years of study, it remains unclear if and to what extent the effects of extra‐floral nectaries (EFNs) on arboreal ants observed on individual trees scale up to larger spatial scales. Here, we address this issue in Brazilian savanna and tested three predictions: (i) Trees with EFN have higher richness of arboreal ant species than trees without; (ii) Arboreal ant species richness increases with...
During foraging, leaf-cutting ant workers of different size classes perform various tasks along foraging trails. Commonly, small workers called hitchhikers climb on leaf fragments imposing an extra transport cost, so their presence is thought to reduce the individual foraging performance. There are four main hypotheses which may explain the occurrence of hitchhikers and a different behavioral act...
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