| 释义 |
photokinesis Biol.|ˌfəʊtəʊkaɪˈniːsɪs, -kɪˈniːsɪs|
[mod.L. ad. G. photokinese (T. W. Engelmann 1883, in Archiv. f. ges. Physiol. XXX. 95): see photo- 1 and kinesis.]
An undirected movement of an organism in response to the effect of light.
1905[see kinesis 2]. 1940Jrnl. Compar. Psychol. XXIX. 448 Photokinesis (the activating effect of light) is particularly a function of the visual receptor. This characteristic accounts for the excitation of the ants at daybreak. 1967Oceanogr. & Marine Biol. V. 361 Aggregation [of polyzoan larvae] in a shaded area may..perhaps best be explained in terms of low photokinesis. 1970W. Nultsch in P. Halldal Photobiol. of Microorganisms viii. 219 The photokinetic action of light absorbed by photosynthetic pigments has led to the conclusion that photokinesis may be linked with photosynthesis.
Hence photokiˈnetic a., pertaining to or exhibiting photokinesis; photokiˈnetically adv.
1900Amer. Jrnl. Physiol. III. 291 Light may cause gatherings of animals... By a reaction of the animal to sudden changes in the intensity of illumination... Such animals Loeb calls ‘Unterschiedsempfindlich’, photokinetic. 1907Jrnl. Exper. Zool. V. 72 The purpose..is to consider the phototactic movement of planarians, as distinct from their photokinetic behavior. 1957G. E. Hutchinson Treat. Limnol. I. ix. 617 Oxygen uptake in the clear bottles is actually higher than in the black... This is presumably due to a photokinetic effect on the zooplankton in the bottles.
1967Oceanogr. & Marine Biol. V. 361 It seems probable that polyzoan larvae display photokinetic responses. 1970W. Nultsch in P. Halldal Photobiol. of Microorganisms viii. 218 As the ultraviolet region of the spectrum is photokinetically effective, too, this effectiveness must be due to another photoreceptor of unknown chemical structure. |