Comparison of Visitors and Pollinators of Mucuna macrocarpa between Urban and Forest Environments
Comparison of Visitors and Pollinators of Mucuna macrocarpa between Urban and Forest Environments
复制标题
DOI：
10.3106/ms2018-0029
复制
发表时间：
2018-09
期刊：
影响因子：
1
通讯作者：
S. Kobayashi;T. Denda;C. Liao;Yu-Hsiu Lin;Wei-Ting Liu;M. Izawa
中科院分区：
文献类型：
--
作者：
S. Kobayashi;T. Denda;C. Liao;Yu-Hsiu Lin;Wei-Ting Liu;M. Izawa
抽象的。城市环境和自然环境之间的哺乳动物与植物相互作用存在显着差异；然而，与自然栖息地的植物相比，对城市地区哺乳动物授粉植物的了解仍然有限。在这里，我们比较了日本冲绳岛和台湾城市和森林地区的黧豆花访客。黧豆需要高度专业化的授粉过程。我们的研究表明，琉球狐蝠（Pteropus dasymallus）是冲绳岛城市和森林地区大果狐蝠的传粉媒介，而在台湾，红腹松鼠（Callosciurus erythraeus）是主要传粉媒介物种。这两种传粉昆虫在城市地区访问花序的频率与在森林地区相同或更高。相比之下，非授粉动物仅在森林地区采摘黧豆花时才会采取抢夺花蜜或摘取花蜜的行为。这些结果表明，即使在生物多样性相对较低的城市环境中，M. macrocarpa 也成功地吸引了当地的传粉媒介。与森林地区相比，城市中动物协会对大果树授粉成功的负面影响明显较低。然而，城市化造成的碎片化可能会减少异花授粉的机会。
Abstract. Mammal-plant interactions differ significantly between urban and natural environments; however, knowledge of mammal-pollinated plants in urban areas remains limited compared to plants in their natural habitats. Here, we compared the flower visitors of Mucuna macrocarpa between urban and forested areas in Okinawa-jima Island, Japan and in Taiwan. Mucuna macrocarpa requires a highly specialized pollination process. Our study showed that Ryukyu flying foxes (Pteropus dasymallus) were the pollinator of M. macrocarpa in both the urban and forested areas of Okinawa-jima Island, whereas, in Taiwan, red-bellied squirrels (Callosciurus erythraeus) were the main pollinator species. Both pollinator species visited inflorescences in urban areas at the same or higher frequency as in forested areas. In contrast, non-pollinating animals engaged in nectar-robbing or picking-off behaviors when visiting Mucuna flowers in forested areas only. These results suggest that M. macrocarpa successfully attracts local pollinators, even in urban environments that have relatively low biodiversity. The negative effect of animal guilds on the success of M. macrocarpa pollination is significantly lower in urban compared to forested areas. However, the fragmentation caused by urbanization might reduce the opportunity for cross-pollination.