positive phototaxis

positive phototaxis

[¦päz·əd·iv ‚fōd·ō′tak·səs]
(physiology)
The orientation and movement of an organism toward the source of a light stimulus.
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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.
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.
Positive phototaxis, manifest as an increase in OD, was observed for wavelengths between 440 nm and 538 nm with a maximum phototactic response at 503 nm.
Positive phototaxis 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 [?