Pseudodiaptomus marinus Sato, 1913, a new invasive copepod in Lake Faro (Sicily): observations on the swimming behaviour and the sex-dependent responses to food

Zoological Studies

Table 1 Adult stages of P. marinus

Case	Number of tracks obtained	Trajectory duration (s) (mean ± SD)	Trajectory length (mm) (mean ± SD)
Filtered water
Males	289	15 ± 40	90 ± 40
Females	35	29 ± 32	100 ± 50
Ovigerous f.	155	20 ± 36	110 ± 50
Food
Males	268	20 ± 17	90 ± 40
Females	42	24 ± 31	130 ± 60
Ovigerous f.	57	12 ± 17	90 ± 50

Number of tracks and track durations (s) and lengths (mm) (mean values ± standard deviation (SD)) for all adult stages of P. marinus in filtered water and with food.