Abstract：
Photosymbiosis indicates a long-term association between animals and photosynthetic organisms. It has been mainly investigated in photosymbiotic cnidarians, while other photosymbiotic associations have been largely neglected. The acoel Symsagittifera roscoffensis lives in obligatory symbiosis with the microalgal Tetraselmis convolutae and has recently emerged as alternative model to study photosymbiosis. Here, we investigated the effects of Bisphenol A, a common plastic additive, on two pivotal stages of its lifecycle: aposymbiotic juvenile development and photosymbiogenesis. Based on our results, this pollutant altered the development of the worms and their capacity to engulf algae from the environment at concentrations higher than the levels detected in seawater, yet aligning with those documented in sediments of populated areas. Data provide novel information about the effects of pollutants on photosymbiotic associations and prompt the necessity to monitor their concentrations in marine environmental matrices.
摘要：
光共生表明动物和光合生物之间的长期联系。它主要在光共生刺胞动物中进行了研究，而其他光共生关联在很大程度上被忽视了。acoelsysaggitiferaroscoffensis与微藻Tetraselmisconvolutae共生，最近已成为研究光共生的替代模型。这里,我们研究了双酚A的作用，一种常见的塑料添加剂，在其生命周期的两个关键阶段：幼体发育和光共生体。根据我们的结果,这种污染物改变了蠕虫的发育和它们吞噬环境中藻类的能力，浓度高于海水中检测到的水平，但与人口稠密地区沉积物中记录的一致。数据提供了有关污染物对光共生关联影响的新信息，并提示有必要监测其在海洋环境基质中的浓度。
