Round goby versus marbled crayfish: alien invasive predators and competitors | Knowledge and Management of Aquatic Ecosystems

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Table 4

Mean time spent in shelter by round goby Neogobius melanostomus and marbled crayfish Procambarus virginalis during light and dark periods. The data analyzed by GLM with Gaussian distribution. Different superscripts indicate significant differences (p < 0.05) between species. Data are presented as mean ± standard deviation.

Animal	Photoperiod	Average time spent in shelter (s)
Round goby	Light	15851 ± 11420^a
Round goby	Dark	12378 ± 13640^a
Marbled crayfish	Light	22365 ± 18435^b
Marbled crayfish	Dark	15723 ± 11114^a

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