Reports

Sodium: Stimulus for Puddling Behavior by Tiger Swallowtail Butterflies, Papilio glaucus

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Science  26 Jul 1974:
Vol. 185, Issue 4148, pp. 372-374
DOI: 10.1126/science.185.4148.372

Abstract

Male Papilio glaucus butterflies are attracted to sand soaked with dillute aqueous solutions of sodium salts. A sodium ion concentration of 10-3 molar is sufficient to stimulate puddling behavior. Acqlisition of sodiumn mnay be the main ecological function of pudding behavior.