| 释义 |
rheotaxis Zool.|riːəʊˈtæksɪs|
[a. G. rheotaxis (C. Herbst 1894, in Biol. Centralbl. XIV. 694): see rheo- and taxis.]
The orientation or movement of an animal (or, formerly, a plant) in response to a current of water.
1900in B. D. Jackson Gloss. Bot. Terms 318/1. 1903 Amer. Naturalist XXXVII. 201 The ear is held to be an organ directly concerned with the reactions of a fish to a current of water (rheotaxis). 1906A. J. Ewart tr. Pfeffer's Physiol. Plants III. iv. 356 Roth..could detect no rheotaxis in Euglena viridis. 1951L. H. Hyman Invertebrates II. x. 213 Planarians that habitually live in flowing water usually exhibit a positive rheotaxis, for obviously without such a reaction they could not maintain themselves in their habitat. 1970Nature 24 Oct. 375/1 It is generally accepted that spermatozoa constrained to move in a fine tube swim preferentially upstream (they exhibit positive rheotaxis) when a current is established in the tube.
Hence rheoˈtactic a., exhibiting or pertaining to rheotaxis; rheoˈtactically adv.
1900B. D. Jackson Gloss. Bot. Terms 318/1 Rheotactic. 1903Science 3 Apr. 531/1 They are..rheotactic, thigmotactic and phototactic in the highest degree. 1954G. L. Clarke Elem. Ecol. ii. 57 The rheotactic reactions of most stream fish is such that they swim against the current and thus maintain their position in the stream. 1973Netherlands Jrnl. Sea Res. VII. 180 No significant difference can be seen between the effect of bottom or surface currents on the rheotactic behaviour of the starfish. 1975F. Creutzberg in O. Kinne Marine Ecol. II. ii. viii. 599 Palaemon serratus and P. xiphias did not respond rheotactically in the experimental current channel. |