Laboratório de Aves Neotropicais, Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Carlos - UFSCar, Rod. Washington Luís, Km 235, CEP 13565-905, São Carlos, SP, Brasil.
Braz J Biol. 2021 Jan-Feb;81(1):137-143. doi: 10.1590/1519-6984.223723.
The non-native African tuliptree, Spathodea campanulata (P. Beauv), is widely distributed in altered Neotropical environments, where hummingbirds are important pollinators. We investigated the assemblage of hummingbirds which fed on its nectar and described their behavior, to understand possible influences of the exotic tree on the territorial behavior in an altered environment in southeastern Brazil. Seven species fed on flower resources, mainly Eupetomena macroura (Gmelin, 1788), Amazilia lactea (Lesson, 1832), and Florisuga fusca (Vieillot, 1817). Visiting time was positive correlated with number of flowers accessed, but in most visits, hummingbirds get the nectar by pillage, instead of frontal access. Flower availability varied throughout months; however, we found no evidence of significative correlation between available flowers and number of agonistic encounters. Despite a high number of animal-plant interactions and a strong territorialism of some species observed in African tuliptree foraging site, there may be other plants at local scale influencing the behavioral patterns observed.
非本地的非洲王莲，Spathodea campanulata（P. Beauv），广泛分布在改变的新热带环境中，蜂鸟是重要的传粉者。我们调查了吸食其花蜜的蜂鸟群落，并描述了它们的行为，以了解外来树木对巴西东南部改变环境中领地行为的可能影响。七种物种以花资源为食，主要是 Eupetomena macroura（Gmelin，1788）、 Amazilia lactea（Lesson，1832）和 Florisuga fusca（Vieillot，1817）。访问时间与访问的花朵数量呈正相关，但在大多数访问中，蜂鸟通过掠夺而不是正面进入来获取花蜜。花的可用性随月份而变化；然而，我们没有发现可用花朵数量与好斗行为次数之间存在显著相关性的证据。尽管在非洲王莲觅食点观察到大量的动植物相互作用和一些物种强烈的领地意识，但在当地范围内可能还有其他植物影响观察到的行为模式。
