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.
References in periodicals archive ?
Preliminary results support negative phototaxis, a potential adaptation to target (and eventually adhere to) the underside of submerged surfaces where rotifers that Sommerstorffia must feed upon are known to graze.
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.
Negative phototaxis, positive geotaxis, positive barotaxis, or passive sinking would facilitate their dispersal and transmission to benthic second intermediate hosts such as burrowing crabs.
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 innate brood rescue behavior of the workers results from their negative phototaxis.
Also of note is that although negative phototaxis in larva has been widely documented in response to light (Busto et al, 1999; Gong, 2009; Xiang et al, 2010), these studies have been conducted using third-instar larvae rather than the younger larvae we used in aspects of the present study.
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.
UV radiation evokes negative phototaxis and covering behavior in the sea urchin Strongylocentrotus droebacheinsis.
Larvae in the subchamber closest to the light were defined as showing positive phototaxis; those in the section farthest from the light were considered to display negative phototaxis.
harrisii show a positive phototaxis to high light intensity and a negative phototaxis to low intensities (Forward.