Abstract
Parasitoid diapause usually serves to synchronize parasitoids with host populations that are undergoing diapause, to avoid some period of unsuitable conditions. Non‐synchronizing diapause can occur, however, in a number of situations. For example, a fraction of the diapausing parasitoids may stay dormant for a number of seasons. Parasitoids attacking each generation of a multivoltine host may enter a “bank” of diapausing individuals that will emerge at the beginning of the next season. Finally, parasitoid diapause initiation may be driven by density‐dependent processes. I examine the effect of these three scenarios on the stability of Nicholson – Bailey type models. I show that in general, non‐synchronizing parasitoids can potentially have a strong de‐stabilizing influence on parasitoid‐host dynamics.
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