(redirected from tropotactic)
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the movement of an animal in response to stimuli received simultaneously from two separate sense organs
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌtrɒp əˈtæk sɪs, ˌtroʊ pə-)

straight movement by an organism toward or away from a source of stimulation as a result of comparing information received by paired sensory receptors on both sides of the body.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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The use of two or more spatially separated sensors by odor-tr acking decapod crustaceans (Reeder and Ache, 1980; Devine and Atema, 1982; Beglane et al., 1997) and by adult flying insects (Srinivasan et al., 1996, 2001) and walking insects (McCoy, 1984; Bell, 1986) has been interpreted as indicative of a tropotactic mechanism.
This tropotactic discrimination of boundaries is the same strategy as that postulated for tracking copepods, and depends on reasonably discrete plume edges that permit the detection of stimulus asymmetry.
This is a tropotactic response, in which the orientation path is guided by simultaneous information obtained by spatially separate sensory cells.