ergestes arcticus was captured thro

ergestes arcticus was captured throughout the whole water column, though very few individuals were caught in the upper strata during daytime (Fig. 3). Maximum abundance occurred between 200 and 300 m during the day and 0 and 50 m at night. Size measurements indicated the capture of three principal size classes, with mean carapace lengths of 0.9, 1.6 and 1.9 cm (Fig. 4). During daytime, individuals caught in the upper depth interval were significantly shorter than individuals found deeper for all depths except 0–50 m, but also here the mean length was shorter than below (Fig. 5). Some shorter individuals were also caught at all depths during the day (Fig. 5). At night, no trend of increasing carapace length with depth was found below 100 m (Fig. 5). Sequential horizontal hauls at 60 m showed that small individuals appeared earlier in the upper layers than larger individuals (Fig. 6).