| Title: | Understanding interactive inducible defenses of Daphnia and its phytoplankton prey |
| Author(s): | Akbar S; Du J; Lin H; Kong X; Sun S; Tian X; |
| Address: | "School of Life Sciences, Nanjing University, Nanjing 210093, China. Electronic address: Siddiq_sa28@gmail.com. Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China. Electronic address: Dujj@zuli.edu.cn. School of Life Sciences, Nanjing University, Nanjing 210093, China. School of Life Sciences, Nanjing University, Nanjing 210093, China. Electronic address: tianxj@nju.edu.cn" |
| DOI: | 10.1016/j.hal.2017.05.003 |
| ISSN/ISBN: | 1878-1470 (Electronic) 1568-9883 (Linking) |
| Abstract: | "Cyanobacterial and zooplankton inducible defenses are important but understudied process that regulate the trophic interactions of freshwater ecosystem. Daphnia due to its large size is considered an important zooplankton with the high potential to control cyanobacterial blooms. It has been shown that Daphnia through maternal induction transfer tolerance to their next generation against Microcystis toxicity. Maternal induction has been investigated in different Daphnia species without considering phenotypic plasticity of prey. Laboratory experiments were performed to explore cyanobacteria-Daphnia inducible defenses in order to better understand their interactions. Two Daphnia species were fed either with Microcystis aeruginosa PCC7806 (Ma) or Microcystis flos-aquae (Mf) mixed with Chlorella vulgaris (Cv) (exposed Daphnia), and or pure Cv (unexposed Daphnia). Exposed prey cultures were produced by prior exposure to Daphnia infochemicals. Neonates produced by exposed and unexposed Daphnia were fed with mixed diet (Microcystis+Cv) of either exposed and or unexposed prey. Growth parameters and toxin production of exposed prey cultures were significantly different than that of control. Exposed Daphnia fecundity and survival was higher as compared to unexposed Daphnia. Growth and reproduction was reduced in exposed Daphnia when fed with exposed prey as compared to those fed with unexposed prey. This study provides information on the interactive inducible defenses between cyanobacteria and its grazer under laboratory conditions and may increase our understanding of cyanobacteria and Daphnia interactions in the freshwater ecosystem" |
| Keywords: | Animals Chlorella vulgaris/*physiology Daphnia/*physiology *Food Chain Microcystis/*physiology Phytoplankton/physiology Zooplankton/physiology Cyanobacteria-zooplankton interactions Growth and survival Inducible defenses Maternal induction; |
| Notes: | "MedlineAkbar, Siddiq Du, Jingjing Lin, Hong Kong, Xiangshi Sun, Shucun Tian, Xingjun eng Research Support, Non-U.S. Gov't Netherlands 2017/06/13 Harmful Algae. 2017 Jun; 66:47-56. doi: 10.1016/j.hal.2017.05.003. Epub 2017 May 14" |
