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J Hazard Mater

Title:		The response of life history defense of cladocerans under predation risk varies with the size and concentration of microplastics
Author(s):		Liu Q; Liu L; Huang J; Gu L; Sun Y; Zhang L; Lyu K; Yang Z;
Address:		"Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China. Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China. Electronic address: yangzhou@njnu.edu.cn"
Journal Title:		J Hazard Mater
Year:		2022
Volume:		20211127
Issue:
Page Number:		127913 -
DOI:		10.1016/j.jhazmat.2021.127913
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Microplastics are an emerging and increasingly serious pollutant in freshwater environment, which have become a threat to freshwater organisms. However, whether microplastics interfere with the responses of organisms to their predators is still unclear. In this study, we investigated the effects of microplastics with tiny different particle size (diameter: 0.7 and 1 microm) on the anti-predation (Rhodeus ocellatus as the predator) defense responses of different body-sized cladocerans, Daphnia pulex and Moina macrocopa. Results showed that microplastics had a size-based inhibitory effect on the induced defense of both D. pulex and M. macrocopa. Specifically, 0.7 microm microplastics had stronger effects on reduced survival time, delayed maturation time, and decreased offspring numbers. In addition, the effects of microplastics also varied with different body-sized cladocerans, i.e. medium-sized cladoceran (D. pulex) were more sensitive than the small-sized one (M. macrocopa) regarding the maturation time. This study illustrated for the first time that the effect of microplastics on induced defense was related to cladoceran species and microplastics size, and further revealed the extensive negative effects of microplastics from the perspective of interspecific relationship"
Keywords:		Animals *Cladocera Daphnia *Microplastics Plastics/toxicity Predatory Behavior Daphnia pulex Inducible defense Kairomone Microplastics Moina macrocopa;
Notes:		"MedlineLiu, Qi Liu, Leihong Huang, Jing Gu, Lei Sun, Yunfei Zhang, Lu Lyu, Kai Yang, Zhou eng Research Support, Non-U.S. Gov't Netherlands 2021/12/07 J Hazard Mater. 2022 Apr 5; 427:127913. doi: 10.1016/j.jhazmat.2021.127913. Epub 2021 Nov 27"