Attempts were made to find out why insects and fishes can be captured with the help of
lamps, why birds fly against lighthouse lanterns, and why in the laboratory phototaxis is …

The term photopollution is proposed for artificial light having adverse effects on wildlife. The
differences between natural and artificial light are discussed in relation to the concepts of …

Activity recordings of plaice and flounder in aquaria under natural conditions of illumination
demonstrate that in the daytime there is a feeding period during which the activity is …

Netherlands oTournal of Sea Research 7 : 53-67 (1973) 7th European Symposium on Marine
Biology THE PHOTIC ORIENTATION OF HATCHLI Page 1 Netherlands oTournal of Sea …

Beim kleinen tropischen SchwarmfischRasbora heteromorpha löst ein Schreckstoff aus
verletzter Haut chemisch Alarm-und Fluchtverhalten aus. Es zeigte sich, dass das rasche …

The recent idea that fish, like all vertebrates, have emotional brains is based on new
evidence about the evolution of the brains of vertebrates, and about homologies between …

An after image method is described with which the following features of the eye movements
during fixation can be demonstrated in an easy way to a large audience: (a) the drifts; (b) the …

Orientation exhibited by animals that presumably cannot see the sun as a discrete source
because of clouds or because of experimental interference with detailed vision, is often …

IT is known that in the honey bee community the queen has an influence on the behaviour
and the physiology of worker bees 1–3 . It has been shown that the presence of a queen in a …

Commercial slaughtering of eel sold fresh starts with the so‐called ‘neck‐cut’. This
tran5ectlon of the spinal column separates the spinal cord from the brain. In due course the …