| Title: | "Colony Formation in Three Species of the Family Scenedesmaceae (Desmodesmus subspicatus, Scenedesmus Acutus, Tetradesmus Dimorphus) Exposed to Sodium Dodecyl Sulfate and its Interference with Grazing of DAPHNIA Galeata" |
| Author(s): | Oda Y; Sakamoto M; Miyabara Y; |
| Address: | "Department of Science and Technology, Shinshu University, Matsumoto, Nagano, Japan. odayusuke543@gmail.com. Department of Environmental and Civil Engineering, Toyama Prefectural University, Imizu, Toyama, Japan. Suwa Hydrobiological Station, Faculty of Science, Shinshu University, Suwa, Nagano, Japan. Institute of Mountain Science, Shinshu University, Minamiminowa, Nagano, Japan" |
| Journal Title: | Arch Environ Contam Toxicol |
| DOI: | 10.1007/s00244-021-00890-8 |
| ISSN/ISBN: | 1432-0703 (Electronic) 0090-4341 (Linking) |
| Abstract: | "By mimicking the info-chemicals emitted by grazers, the common anionic surfactant sodium dodecyl sulfate (SDS) can induce colony formation in the green algal genus Scenedesmus at environmentally relevant concentrations. The morphometric effects can hinder the feeding efficiency of grazers, reducing energy flow along the pelagic food chain from Scenedesmus to consumers. Despite this potential ecological risk, few studies exist on whether the SDS-triggered induction of colonies is common in other species of the family Scenedesmaceae. Here, we investigated the effects of SDS on the growth and morphology of three species of Scenedesmaceae (Desmodesmus subspicatus, Scenedesmus acutus, and Tetradesmus dimorphus) and on the clearance rates of Daphnia galeata grazing on the SDS-induced colonies. SDS triggered colony formation in all algal species at concentrations nonlethal to them (0.1-10 mg L(-1)) in 72 h; however, the induction levels of colony formation were generally lower than for those in the Daphnia culture medium. We also found that the SDS-induced colonial algae reduced D. galeata clearance rates. Our results highlight the potential effect of SDS on the Daphnia-Scenedesmaceae system by triggering the morphological response of Scenedesmaceae at concentrations below those that exert toxicity. Such disruptive effects of pollutants on predator-prey interactions should be considered within the framework of ecological risk assessments" |
| Keywords: | Animals *Daphnia Food Chain *Scenedesmus Sodium Dodecyl Sulfate/toxicity Surface-Active Agents; |
| Notes: | "MedlineOda, Yusuke Sakamoto, Masaki Miyabara, Yuichi eng JP20J11681/Japan Society for the Promotion of Science/ 2021/09/19 Arch Environ Contam Toxicol. 2022 Jan; 82(1):37-47. doi: 10.1007/s00244-021-00890-8. Epub 2021 Sep 17" |
