naa a22 4500 510748937 CHVBK 20180411083057.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11270-012-1375-2 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1375-2 Acute and Behavioral Sensitivity of Mesocyclops longisetus to Atrazine and Endosulfan Formulations under Predation Pressure [Elektronische Daten] [María Gutierrez, Ana Gagneten, Juan Paggi] The present study analyzes the acute and behavioral toxicity of two commercial formulations of endosulfan and atrazine (Gesaprim 90 WDG® and Zebra Ciagro®, respectively) on the cyclopoid copepod Mesocyclops longisetus. The studied behavior was the "escape ability” because of its ecological importance in natural predator-prey interactions. This was investigated using two experimental designs: (1) a simulated predator (applying a hydraulic device) and (2) a real one (the zooplanktophagous fish Cnesterodon decemmaculatus). Both pesticides resulted highly toxic to adults and nauplii at even relatively low concentrations and similar to those found in field studies. Copepods' survival was not only directly affected but also indirectly through altering their escape behavior, which may have increased their vulnerability to predation. The escape ability, measured with the simulated predator was stimulated early (up to 6h of exposition) but inhibited later (after 24h of exposition). The predation experiments with the real predator were in accordance with these results. The comparison of both experimental designs corroborates the effectiveness of the hydraulic mechanism as a testing method. Springer Science+Business Media Dordrecht, 2012 Ecotoxicity nationallicence Behavioral assessments nationallicence Escape ability nationallicence Pesticides nationallicence Predator-prey interaction nationallicence Mesocyclops longisetus nationallicence Water pollution nationallicence Gutierrez María Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut Gagneten Ana Facultad de Humanidades y Ciencias (UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut Paggi Juan Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-9 0049-6979 224:1<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1375-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1375-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gutierrez María Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut NATIONALLICENCE 700 1- Gagneten Ana Facultad de Humanidades y Ciencias (UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut NATIONALLICENCE 700 1- Paggi Juan Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-9 0049-6979 224:1<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer