(Downloading may take up to 30 seconds. If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.
Fig. 6. Diurnal rhythm of activity in C. mariae (10 cycles analysed).
C. mariae was only actively swimming in the water column from
22:00-07:00. Grey shadow, from sunset to sunrise; August 2003; 50 animals in
the aquarium.
