Academic literature on the topic 'Univoltine'

Abstract Most of the host-parasitoid systems explored so far in this book have involved coupled interactions with discrete and synchronised generations. Such discretegeneration life cycles are most frequently found in univoltine species in temperate regions where seasonality often synchronises populations and provides a natural interval between the appearance of successive generations. Seasonality also often synchronises the appearance of the first generation of multivoltine species within a year, although successive generations throughout the season tend to show progressive overlap of their life-cycle stages. Focusing on discrete-generation life cycles does not mean that age-structure is necessarily neglected in these models. For example, the combination of parasitoids and additional host density dependence requires specific assumptions about the order with which these occur in the host’s life cycle, which is then reflected in the model structure (Chapter 3, p. 46). Another example, in this case with an explicit treatment of age-structure, was discussed in Chapter 4, p. 90, involving the stabilising effects of phenological asynchrony between hosts and parasitoids within a single generation period.