| Summary: | 碩士 === 國立彰化師範大學 === 生物學系 === 105 === Ants are not only a diverse and important invertebrate group in the land ecosystem, but also successful in terms of large biomass. In general, food source is unpredictable and unevenly distributed on the ground. A continued food resource is important to the growth of ants. Previous studies regarding food interspecific competition and daily foraging activity of ants were always carried out in laboratory, whereas current study was performed under field condition. This study was conducted at Lianhuachi Research Center Forest located in Nantou County, Taiwan. We provided continued liquid food source (i.e., sucrose 20%) in the field. Three ant liquid feeders were placed on grass and tree, respectively. Ant foraging activity was recorded over a 7 days period along with ambient temperature and relative humidity. Result of foraging activities on tree indicated that Dolichoderus thoracicus have a regular daily activity RHythm which active active between sunset and midnight Foraging activities of D. thoracicus and Camponotus monju showed significant correlation with the temperatures, humility, and day/night cycle. On the ground, Technomyrmex brunneus and Crematogaster sp.1 showed interspecific competition among each other. Activity of T. brunneus was significant correlated with the temperatures. This research provide insight into behavior of ants toward liquid food source on the tree and ground in field condition.
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