... assigned an adaptive function in nonhuman primates and various other organisms. One hypothesis submits that clay-rich soil adsorbs intestinal insults, namely plant metabolites or diarrhoea-causing enterotoxins. Here we test the capacity of kaolin, a commonly ingested clay, to adsorb quinine (an alkaloid...

... predation alkaloid molting Oreophoetes peruana stick insect Insects of the order Phasmatodea, the so-called stick insects, comprise some 2500 species, mostly from the warmer parts of the world ( Bedford, 1978 ; Key, 1991 ). Large and frequently apterous, phasmids are commonly slow and clumsy...