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oai:figshare.com:article/34034326 2026-09-30T17:23:43Z category_15 category_272 category_39 category_45 category_734 category_69 portal_5 item_type_1 month_year_09_2026

<p>Boxplot showing medians, 25- and 75-percentiles of the avoidance reaction rate within the 25 cm long flume volume segments (N = 38) set virtually along the x-axis of the experimental flume (N = 38) in daylight and dark experiments.</p> Falko Wagner (25144984) Ianina Kopecki (25144987) Jelger Elings (16794784) Ulf Enders (25144990) Andreas Lindig (25144993) Kathrin Maltzahn (25144996) Tom Roessger (25144999) Márcio S. Roth (25145002) Mansour Royan (25145005) Jürgen Stamm (18938626) Stefan Hoerner (20229803) Neuroscience Environmental Sciences not elsewhere classified Ecology Sociology Biological Sciences not elsewhere classified Inorganic Chemistry salmo trutta </ hidden markov models direct behavioral observations behavioral rules identified strong flow acceleration sprint swimming speed spatial velocity gradient analyze activity states activity peak occurred sedated fish passing fish protection solutions div >< p high flow velocity swimming behavior even hydraulic conditions characterized fish behavior appears flow velocities exceeding fish movement behavior flow velocity swimming activity high velocities hydraulic conditions movement modes fish behavior daylight conditions underlying mechanisms substantial role results illustrate remain understudied quantitative approach pump intakes primary trigger predictive accuracy injury rates hydropower facilities hardly possible experimental flume enhanced understanding draw conclusions daylight increased considerable proportion avoidance reactions analyzed based <p>The data reveal significant differences in avoidance reaction rates (Wilcoxon rank sum test) between the fish in dark and daylight (W = 1197, p < 0.001).</p> 2026-09-30T17:23:32Z Image Figure 10.1371/journal.pone.0348737.g009 https://figshare.com/articles/figure/_p_Boxplot_showing_medians_25-_and_75-percentiles_of_the_avoidance_reaction_rate_within_the_25_cm_long_flume_volume_segments_N_38_set_virtually_along_the_x-axis_of_the_experimental_flume_N_38_in_daylight_and_dark_experiments_p_/34034326 CC BY 4.0