Contributions of bats to the local economy through durian pollination in Sulawesi, Indonesia

Durian is economically important for local livelihoods in Indonesia. Our study investigated the identity of pollinators of semi-wild durian, and subsequently estimated the economic contribution of these pollination services. We conducted pollination exclusion experiments and deployed camera traps at durian trees from October 2017 to January 2018 in an area where the local economy depends on durian production in West Sulawesi, Indonesia. Durian flowers in the experiment that were accessible to bats had significantly higher fruit set compared to flowers that were completely closed to animal visitors or those that could only be visited by insects, suggesting that bats were the primary durian pollinator. The small, highly nectarivorous cave nectar bat (Eonycteris spelaea) visited more inflorescences (n = 25) and had visits of much longer duration (X ̅ = 116.87 sec/visit) than the two species of flying foxes: Pteropus alecto (n = 7 inflorescences visited,X ̅ = 11.07 sec/visit) and Acerodon c...榴莲（Durian）对印度尼西亚当地民众的生计具有重要经济价值。本研究针对半野生榴莲的传粉者类群展开调查，并进一步评估了此类传粉服务所带来的经济贡献。2017年10月至2018年1月期间，我们在印度尼西亚苏拉威西岛西部一处当地经济依赖榴莲种植的区域，针对榴莲树开展了传粉阻隔实验，并布设了红外相机陷阱（camera traps）。实验结果显示，允许蝙蝠访问的榴莲花朵坐果率，显著高于完全阻隔动物访花或仅允许昆虫访花的花朵，这表明蝙蝠是榴莲的主要传粉者。小型高度嗜蜜的洞穴花蜜蝙蝠（*Eonycteris spelaea*）的访问花序数更多（n=25）、单次访问时长显著更长（平均为116.87秒/次），相较于两种狐蝠：澳洲狐蝠（*Pteropus alecto*，n=7个访问花序，平均访问时长11.07秒/次）与大狐蝠属（*Acerodon*）[原文内容未完整呈现]。