..., behavior, and lifespan among adults (Ho¨lldobler and Wilson 1990). Importantly, these castedetermining signals often derive from environmental—physical,
nutritional (e.g., royal jelly), social—cues rather than genetic factors (Wheeler 1986, 1991; Schwander et al. 2010; Kamakura 2011; Rajakumar et al. 2012...