The 2nd, 3rd, 4th, and 5th instar nymphs did not respond differently to the light source and appeared not to show any positive phototaxis
throughout the trials (Fig.
Abalone larvae generally exhibit positive phototaxis
during trocophore stage (Ino 1952, Yano & Ogawa 1977, Tanaka 1978) (but see Leighton 1989), indicating upward swimming behavior.
In laboratory conditions, many decapod larvae display positive phototaxis
Furthermore, queen conch larvae exhibit positive phototaxis
and are thus associated with surface layers (Barile et al.
Species can be attracted to, or disoriented by, sources of artificial light through positive phototaxis
(Verheijen 1985; Longcore and Rich 2004).
max] 480 nm) stimulate positive phototaxis
and longer wavelengths inhibit [phototaxis].
However, a common misunderstanding is that this attraction represents a positive phototaxis
Based on the premise that in the absence of moonlight, sandflies would exhibit positive phototaxis
and be attracted to light traps, a maximum catch would be expected during a new moon.
Flies stayed at the top because of positive phototaxis
and negative geotaxis until they succumbed to heat and rolled down a series of baffles reaching a collecting vial.
, manifest as an increase in OD, was observed for wavelengths between 440 nm and 538 nm with a maximum phototactic response at 503 nm.
or attraction to light is a well-known behavior in adults of crepuscular and nocturnal insects.
This may be an indication for positive phototaxis
, which in turn may indicate that light conditions cause an increase in [?