Pollinators have long been known to select for floral traits, but the nature of this relationship has been little investigated in trap pollination systems. We investigated the trapping devices of 15 Arum spp. and compared them with the types of insects trapped. Most species shared a similar general design of trap chamber walls covered in downward-pointing papillate cells, lacunose cells in the chamber wall and elongated sterile flowers partially blocking the exit of the trap. However, there was significant variation in all these morphological features between species. Furthermore, these differences related to the type of pollinator trapped. Most strikingly, species pollinated by midges had a slippery epidermal surface consisting of smaller papillae than in species pollinated by other insects. Midge-pollinated species also had more elongated sterile flowers and tended to have a larger lacunose area. We conclude that pollination traps evolve in response to the type of insect trapped and that changes to the slippery surfaces of the chamber wall are an important and previously little recognized variable in the design of pollination traps. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 172, 385–397.

中文翻译：

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天南星科授粉诱捕器诱捕装置的设计与昆虫类型有关


人们早就知道传粉者会选择花性状，但在诱捕授粉系统中很少研究这种关系的性质。我们研究了 15 种海芋属植物的诱捕装置。并将它们与捕获的昆虫类型进行比较。大多数物种具有相似的总体设计，即陷阱室壁覆盖有向下指向的乳头状细胞、室壁中的空隙细胞和部分阻塞陷阱出口的细长不育花。然而，物种之间的所有这些形态特征都存在显着差异。此外，这些差异与捕获的传粉媒介的类型有关。最引人注目的是，与其他昆虫授粉的物种相比，由蠓授粉的物种具有光滑的表皮表面，由更小的乳突组成。吸蚊授粉的物种也有更细长的不育花，并且往往有更大的空隙区域。我们得出的结论是，授粉陷阱根据捕获的昆虫类型而进化，并且室壁光滑表面的变化是授粉陷阱设计中的一个重要且以前很少被认识到的变量。 © 2013 伦敦林奈学会，《林奈学会植物学杂志》，2013, 172, 385–397。