Table 5

The total number and percentage of attacks observed by round goby Neogobius melanostomus and marbled crayfish Procambarus virginalis during light and dark periods and the total time spent (s) in aggressive behavior. The data analyzed by GLM with Gaussian distribution. Different superscripts indicate significant differences (p < 0.05).

Animal Photoperiod Number of attacks (%) Duration of attacks (s)
Round goby Light 237 (60.61) 2140b
Dark 127 (54.04) 324a
Marbled crayfish Light 154 (39.39) 926b
Dark 108 (45.96) 274a

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