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phototaxis
(redirected from phototactic)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
phototaxis /pho·to·tax·is/ (-tak´sis) the movement of cells and microorganisms in response to light.phototac´tic
pho·to·tax·is (ft-tkss)
n.
The movement of an organism or cell toward or away from a source of light.

photo·tactic (-tktk) adj.

phototaxis [fo″to-tak´sis]
taxis of cells and microorganisms under the influence of light. adj., adj phototac´tic.

phototaxis
the movement of cells and microorganisms under the influence of light.


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The larvae are negatively phototactic, and avoid the sunlight.
Phototactic Responses of Larvae from the Marine Sponge Xestospongia proxima.
Moreover, these authors documented a negative phototactic behavior of juveniles, positioning themselves under airlines, under plate racks or in corners of the aquaria during the day, especially in the unshaded aquaria, although grazing during the night was evident (cleared areas over plates).
 
 
 
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