caa a22 4500 445892625 CHVBK 20180317145621.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10750-010-0493-3 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0493-3 Predatory and toxic effects of the turbellarian ( Stenostomum cf leucops ) on the population dynamics of Euchlanis dilatata , Plationus patulus (Rotifera) and Moina macrocopa (Cladocera) [Elektronische Daten] [S. Nandini, S. Sarma, Henri Dumont] Catenulid turbellarians, common in shallow, tropical ponds, affect their rotifer prey via the production of toxins. There is, however, no quantitative information on their effect on the demography of their prey. Here, we test the impact of Stenostomum cf leucops on the population dynamics of the rotifers Euchlanis dilatata and Plationus patulus, and the cladoceran Moina macrocopa. Experiments were initiated with rotifers at 0.5ind.ml−1 and the cladoceran at 0.2ind.ml−1; growth patterns were compared in the absence and presence of worms (2 Stenostomum ind. per 50ml). Results revealed that brachionids were most adversely affected: there was a lower growth rate of the rotifers in the presence of worms (P<0.01, repeated measures ANOVA), although at the densities applied, the predator did not wipe out its prey. These littoral predators may therefore regulate rotifer prey in natural conditions. In Moina, the population evolved differently; initially, we found no difference between control and treatment, but after about 10days, the population collapsed, irrespective of a direct or indirect contact with the predator. This delayed effect deserves more study, as it could represent flatworm toxin accumulation by the cladoceran. Springer Science+Business Media B.V., 2010 Flatworms nationallicence Population growth nationallicence Plationus patulus nationallicence Euchlanis dilatata nationallicence Moina macrocopa nationallicence Egg ratio nationallicence Nandini S. Laboratorio de Zoología Acuática, División de Investigación y Posgrado, Edificio UMF, Universidad Nacional Autónoma de México, Campus Iztacala, AP 314, CP 54090, Tlalnepantla, Estado de Mexico, Mexico aut Sarma S. Laboratorio de Zoología Acuática, División de Investigación y Posgrado, Edificio UMF, Universidad Nacional Autónoma de México, Campus Iztacala, AP 314, CP 54090, Tlalnepantla, Estado de Mexico, Mexico aut Dumont Henri Department of Biology, University of Gent, Ledeganckstraat, 35, 9000, Ghent, Belgium aut Hydrobiologia Springer Netherlands 662/1(2011-03-01), 171-177 0018-8158 662:1<171 2011 662 10750 https://doi.org/10.1007/s10750-010-0493-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0493-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nandini S. Laboratorio de Zoología Acuática, División de Investigación y Posgrado, Edificio UMF, Universidad Nacional Autónoma de México, Campus Iztacala, AP 314, CP 54090, Tlalnepantla, Estado de Mexico, Mexico aut NATIONALLICENCE 700 1- Sarma S. Laboratorio de Zoología Acuática, División de Investigación y Posgrado, Edificio UMF, Universidad Nacional Autónoma de México, Campus Iztacala, AP 314, CP 54090, Tlalnepantla, Estado de Mexico, Mexico aut NATIONALLICENCE 700 1- Dumont Henri Department of Biology, University of Gent, Ledeganckstraat, 35, 9000, Ghent, Belgium aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 662/1(2011-03-01), 171-177 0018-8158 662:1<171 2011 662 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer