... patterns of the ground-dwelling isopod Porcellionides pruinosus . Isopods were exposed to one of three different illuminance conditions (<0.01, 1 and 10 lx) over a period of 14 consecutive nights. Behavioral assays included emergence, open-field, habituation to a looming stimulus, and spatial navigation...

... faster than smaller, sub-adult fish. * Author for correspondence (e-mail: [email protected] ) 11 9 2002 © The Company of Biologists Limited 2002 2002 electric fish Gnathonemus petersii electrolocation landmark spatial navigation development cognitive map Forming...