Specific objectives: to determine the growth potential of P. dignus on T. absolute in laboratory by determining demographic parameters, to evaluate the effect of parasitism of P. dignus on hosts of different age, on parasitoid's fertility and survival, to analyze P. dignus oviposition strategies, as a factor of eggs complement and time availability, to determine the existence of encapsulation and superparasitism of immature stages of P. dignus in laboratory and field, to estimate parasitism impact of P. dignus on T. absoluta, to determine the existence of competition between P. dignus and D. phthorimaeae in fields with different pest management strategies and in laboratory.
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