Abstract: In order to explore the habitat suitable for the survival of Utricularia aurea and facilitate its scientific management and conservation, Hydrilla verticillata, Brasenia schreberi, Nymphoides peltata and Vallisneria natans were respectively associated with U. aurea, and the growth indicators such as plant length, fresh weight, number of bladder, environmental indicators such as water nutritional status, physical environment and phytoplankton biomass were measured in different treatments. The results showed that: (1) With the decrease of nutrient concentration in the water body, the growth of U. aurea was inhibited. (2) Companion species mainly affect the growth of U. aurea by changing the physical properties of the water body (e.g. pH). As a companion species, N. peltata is more favorable to the growth of U. aurea, followed by B. schreberi. However, V. natans and H. verticillata are not conducive to its growth. (3) Due to the availability of nutrients and pH, the investment in carnivorous activities (allocation of resources in carnivorous activities) is altered by the U. aurea, resulting in a decrease or even absence of bladders. Therefore, the growth of U. aurea is influenced by a combination of various factors.

Key words: aquatic plant; accompanying; interspecific interactions; conservation biology; adaptation strategy

摘要： 为探求适合黄花狸藻Utricularia aurea生存的生境，便于对其科学管理和保护，将轮叶黑藻Hydrilla verticillata、莼菜Brasenia schreberi、荇菜Nymphoides peltata、苦草Vallisneria natans分别与黄花狸藻伴生，测定不同处理黄花狸藻株长、鲜重、捕虫囊个数等生长指标，水体营养状况、物理环境以及浮游生物生物量等环境指标。结果表明：(1) 随着水体营养盐浓度降低，黄花狸藻生长受到抑制。(2) 伴生物种主要通过改变水体物理性质(如pH)影响黄花狸藻的生长，荇菜作为伴生种更有利于黄花狸藻生长，其次是莼菜，而苦草和轮叶黑藻作为伴生种不利于其生长。(3) 黄花狸藻因营养盐的可获得性和pH改变食肉性投资(资源在食肉性活动上的分配)，出现捕虫囊减少甚至无捕虫囊的状态。因此，黄花狸藻的生长受诸多因子共同作用。

关键词: 水生植物；伴生；种间相互作用；保护生物学；适应策略