Vive la variance: a functional oviposition theory for insect herbivores

We developed state-dependent life-history theory to explain the variance in clutch size decisions made by insect herbivores under a variety of ecologi cal scenarios. An important aspect of our theory is explicit representation of the distribution of host quality and frequency of occurrence. Examinati on of the theory suggests that clutch size decisions can be highly non-line ar with respect to host quality and variability. We then use our theory to explore the potential for bet-hedging strategies to evolve as a function of unpredictable catastrophic events that decimate entire clutches. Our analy sis suggests that the benefits to employing such a strategy will frequently be outweighed by costs brought on by delayed oviposition.