Universidade Regional Integrada do Alto Uruguai e das Missões, Departamento de Ciências Biológicas, Campus de Frederico Westphalen, Avenida Assis Brasil, 709, Itapajé, 99400-000 Frederico Westphalen, RS, Brazil.
Pontifícia Universidade Católica do Paraná, Escola de Ciências da Vida, Curso de Ciências Biológicas, Rua Imaculada Conceição, 1155, Prado Velho, 80215-901 Curitiba, PR, Brazil.
An Acad Bras Cienc. 2021 May 31;93(3):e20201571. doi: 10.1590/0001-3765202120201571. eCollection 2021.
Sturnira lilium is a frugivorous bat that is known for its high consumption of Solanaceae fruits. We captured S. lilium, using mistnets, to study its diet and diet seasonal variation in a seasonal deciduous forest in southern Brazil. We also investigated the predominance of Solanaceae and of Solanum granulosoleprosum, the main food source, correlated with the availability of ripe fruits. A total of 11 plant species were identified from 126 fecal samples. Seeds of Solanaceae species were present in 81% of the samples, with S. granulosoleprosum seeds being the most common (68.3 %). There was no seasonal variation in the diet; however ANOVA revealed that the consumption of Solanaceae and S. granulosoleprosum showed monthly differences. There was no monthly correlation and there was a weak seasonal correlation between ripe fruit availability and the consumption of S. granulosoleprosum by S. lilium, indicating that this bat species occupies broad home ranges and is capable of locating plants with mature fruits in adjacent areas during most of the year. The mobility of S. lilium and high abundance of S. granulosoleprosum in the diet suggests that this species as good disperser of plants that are characteristic of early successional stages and areas undergoing regeneration.
栗耳蝠是一种以茄科植物果实为食的果蝠。我们使用网捕的方法捕获栗耳蝠，以研究其在巴西南部季节性落叶林中的食性及其季节性变化。我们还调查了茄科植物和主要食物来源的 Solanum granulosoleprosum 的优势与成熟果实的可获得性之间的相关性。从 126 份粪便样本中鉴定出 11 种植物。有 81%的样本中存在茄科植物的种子，其中 S. granulosoleprosum 的种子最为常见（68.3%）。饮食没有季节性变化；然而，方差分析显示，茄科植物和 S. granulosoleprosum 的消耗存在月度差异。成熟果实的可获得性与 S. lilium 对 S. granulosoleprosum 的消耗之间没有月度相关性，也没有弱的季节性相关性，这表明这种蝙蝠物种占据了广泛的活动范围，并且能够在一年中的大部分时间在相邻区域找到成熟果实的植物。S. lilium 的移动性和饮食中 S. granulosoleprosum 的丰富度表明，该物种是早期演替阶段和正在再生的地区的植物的良好传播者。
