Reproductive strategy of Podiscus rostralis (Stal) (Heteroptera : Pentatomidae) females under different feeding intervals

The reproduction and survival of Podisus rostralis was evaluated under diff erent feeding intervals using Tenebrio molitor larvae as food and a continu ous supply of bean slices. There was a linear relationship between the pre- oviposition period and the periods without feeding. Females fed at interval s of 1-4 days laid their first egg mass 8-10 days after emergence, while th ose fed every 8 and 16 days did so after 13.6 and 20 days respectively. The oviposition period number of egg masses, total number of eggs, number of e ggs/egg mass, total number of nymphs and rate of egg consumption/day showed negative linear correlations with the increase in feeding interval The lon gevity of P. rostralis was not affected by feeding interval (P > 0.05). The present results suggest a type of trade-off, where longevity is maintained at the expense of reproduction. This behaviour or attribute of P. rostrali s can contribute to its establishment and survival in an environment of flu ctuating food supply.