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rheotaxis
(redirected from rheotactic)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.02 sec.
rheotaxis /rheo·tax·is/ (re″o-tak´sis) the orientation of an organism in a stream of liquid, with its long axis parallel with the direction of flow, designated negative (moving in the same direction) or positive (moving in the opposite direction).
rhe·o·tax·is (r-tkss)
n.
Movement of an organism in response to a current of fluid or air.

rheotaxis [re″o-tak´sis]
orientation of an organism in a stream of liquid, with its long axis parallel with the direction of flow, designated negative (moving in the same direction) or positive (moving in the opposite direction).

rheotaxis
orientation of an organism in a stream of liquid, with its long axis parallel with the direction of flow, designated negative (moving in the same direction) or positive (moving in the opposite direction).


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Starfish have well developed chemoreceptive and rheotactic capabilities (Sloan 1980) and it is likely that they were attracted by odors emanating from mussels damaged by the mussel dredges.
The behavior of fish in response to trawls has been described as a combination of optomotor response and rheotactic reaction, both of which contribute to a fishes' ability to escape capture in a trawl (Watson (17)).
Because the water flow from the mussel's exhalant siphons can be expelled over quite a distance, in addition to rheotactic response, filtering may also act as a sort of chemical beacon to guide the commensals in their search for the appropriate partner (Gotto 1970).
 
 
 
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