caa a22 4500 445891424 CHVBK 20180317145617.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10750-010-0457-7 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0457-7 Pelagic flatworm predation on daphniids in a subtropical reservoir: different effects on Daphnia galeata and on Ceriodaphnia quadrangula [Elektronische Daten] [Tian Wang, Lijuan Xiao, Qiuqi Lin, Bo-Ping Han, Henri Dumont] Following a reduction in fish populations in 2004-2005, a new, single annual pulse of pelagic flatworms was observed in early summer during 2006-2009 in Liuxihe, a freshwater reservoir in South China. As soon as these worms appear, Daphnia galeata retreats into dormancy, one month earlier (July) in the presence of flatworms than previously observed (August) with fish, while the population of the related Ceriodaphnia quadrangula tends to increase. We show, through in situ lake sampling, in large enclosures and by laboratory observations, that Ceriodaphnia, although perhaps competitively inferior in its ability to acquire algal food, has a higher tolerance to flatworm toxins. As a result, Ceriodaphnia manages to coexist with and proliferate in the presence of the flatworm. Observations in the laboratory suggest that flatworm population autoregulates by being sensitive to their own toxins and that Ceriodaphnia, even if prey to the worms, likely incurs more benefit than cost from their presence. Springer Science+Business Media B.V., 2010 Zooplankton nationallicence Flatworms nationallicence Daphnia galeata nationallicence Ceriodaphnia quadrangula nationallicence Cladocera nationallicence Predation nationallicence Competition nationallicence Animal toxins nationallicence Wang Tian Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut Xiao Lijuan Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut Lin Qiuqi Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut Han Bo-Ping Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut Dumont Henri Department of Biology, Ghent University, 9000, Ghent, Belgium aut Hydrobiologia Springer Netherlands 658/1(2011-01-01), 139-146 0018-8158 658:1<139 2011 658 10750 https://doi.org/10.1007/s10750-010-0457-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0457-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Tian Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Xiao Lijuan Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Lin Qiuqi Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Han Bo-Ping Institute of Hydrobiology, Jinan University, Guangzhou, People's Republic of China aut NATIONALLICENCE 700 1- Dumont Henri Department of Biology, Ghent University, 9000, Ghent, Belgium aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 658/1(2011-01-01), 139-146 0018-8158 658:1<139 2011 658 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer