We investigated the effects of the presence of bladderwort plants on survival of early instar larvae of one coenagrionid and two libellulids in laboratory experiments. In all three species survival was reduced compared to treatments with a non-carnivorous submerged plant, with effective mortality that could be related to bladderwort being 19–45% dependent on the prey species. Individuals of all species were found in capture bladders. We also recorded the microhabitat use of the early instar larvae and found that the species with highest use of vegetation had highest mortality due to bladderwort. We conclude that bladderwort may have effects on odonate larvae that translate into natural conditions and we discuss factors that may affect predation by bladderwort on odonates in the field.

中文翻译：

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躲在陷阱里？银杏植物存在下早龄齿状幼虫的死亡率

我们在实验室实验中研究了紫菀属植物的存在对一种 coenagrionid 和两种 libellulids 的早期幼虫存活的影响。与非食肉沉水植物的处理相比，所有三个物种的存活率都降低，有效死亡率可能与 19-45% 依赖于猎物物种的膀胱草有关。在捕获膀胱中发现了所有物种的个体。我们还记录了早期幼虫在微生境中的使用情况，发现植被使用率最高的物种因银屑病而死亡率最高。我们得出结论，膀胱草可能对转化为自然条件的齿状藻幼虫产生影响，并且我们讨论了可能影响豆类在野外捕食齿状藻的因素。