Specificity and Behavior in Symbioses

Abstract
Symbiotic associations are analyzed and illustrated and usually they are considered to exist because one or both partners exhibit specialized behavior, of which primary function is furtherance of such association. Such behavior has been recognized and in some partnerships but "symbiosis effective" stimuli bringing it about rarely have been identified. More attention has been given to integrative action of chemical factors but as more cases are critically examined under expt. conditions, physical stimuli will be found to play major role in many. Probably as impossible that such stimuli as color, shape, texture, temperature, etc. can fail to be considered as it is for any organism to exist without normal functioning of its coordinating mechanisms. Such integrative factors of chemical nature have been thought of as "social hormones". "Trophallaxis" must be extended to a broader generality involving any specific stimuli which serve to maintain association at any level of integration. Among 2 spp. associations too many of these stimuli remain unidentified.
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