negative phototaxis

negative phototaxis

[¦neg·əd·iv ‚fōd·ō′tak·səs]
(physiology)
The orientation and movement of an organism away from the source of a light stimulus.
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formosa) was positively phototactic in the absence of any chemical influence of its host mussel, Anodonta (now Pyganodon) cataracta, but exhibited negative phototaxis when tested in water containing extract of host gill tissue or in water from the mantle cavity of the host.
However, the findings of LaRochelle & Dimock (1981) and the fact that the induction of mite negative phototaxis can occur in water modified by mussels clearly suggest that it can be mediated by distance chemoreception as well.
imbecillis that had completed their parasitic phase with chironomids (what I referred to as post-chironomid larvae) exhibited negative phototaxis only in the presence of water that had been modified by U.
The innate brood rescue behavior of the workers results from their negative phototaxis.
In addition the negative phototaxis of alarmed fire ants was also recognized and used in laboratory by Porter & Tschinkel (1985).
Escape behavior mediated by negative phototaxis in the scorpion Paruroctonus utahensis (Scorpiones, Vaejovidae).
Other wavelengths induced negtive phototaxis, vacillation between positive and negative phototaxis, or no phototaxis, depending upon conditions of growth and phototaxis assay.
The greatest negative phototaxis we have observed was [DELTA]OD(683) = -.
brevis and congenus alates is followed by negative phototaxis of the dealates (Wilkinson 1962; Minnick 1973), although no data have been produced to confirm this observation.
The negative phototaxis of the dealates was studied with a white PVC pipe (51 cm x 7 cm inside diam) wrapped with electrical tape and closed on one end.
A total of 175 holes were colonized during the negative phototaxis experiment.
brevis (Minnick 1973) showed negative phototaxis in dealates of these species.