Hansen Stephen Robert
Ecology Program, University of Michigan, Ann Arbor, MI, USA.
Oecologia. 1978 Jan;35(1):109-117. doi: 10.1007/BF00345544.
In an Upper Sonoran Grassland Community, three species of Pogonomyrmex ants coexist. Due to the similarity in their diets and the apparent limitation of food, coexistence is aided by the differential utilization of the available food, according to size and type. Interspecific differences in morphology, physiology and microhabitat nesting sites facilitate this division. Differences in morphology enable the foragers to handle and collect seeds of different size and, consequently, type. Differences in desiccation resistance enable the foragers to be active at different times and, consequently, incorporate different amounts of insect material into their diets. Differences in microhabitat nest sites offers the foragers different proportions of the desired food resource.
在上索诺兰草原群落中，三种收获蚁属蚂蚁共存。由于它们的饮食相似且食物明显有限，根据体型和类型对可用食物的差异利用有助于它们共存。形态、生理和微生境筑巢地点的种间差异促进了这种划分。形态上的差异使觅食者能够处理和收集不同大小、进而不同类型的种子。抗干燥能力的差异使觅食者能够在不同时间活动，从而在饮食中摄入不同数量的昆虫物质。微生境巢穴地点的差异为觅食者提供了不同比例的所需食物资源。
