Efeito da escassez de presa na sobrevivência e reprodução do predador Supputius cincticeps (Stål) (Heteroptera: Pentatomidae) | Effect of prey shortage on the reproduction and longevity of Supputius cincticeps (Stål) (Heteroptera: Pentatomidae)
Mourao, Shelia A.
The effect of prey shortage on the performance of Supputius cincticeps (Stål) females was evaluated at 24.6 ± 0.7ºC, 80 ± 4% RH and 12h photophase. Larvae of Tenebrio molitor L. were offered to the females during 24h every one, two, four, six or eight days; pieces of green bean (Phaseolus vulgaris L.) were offered continuously. The percentage of females with egg masses, oviposition period, and the number of egg masses, eggs and nymphs decreased with the increase in the interval without prey, whereas the periods of pre- and pos-oviposition increased. On the other hand, longevity and number of eggs per egg mass were not affected by the prey regimen. The results suggest a trade-off between longevity and fecundity (reduction of fecundity to maintain longevity), which could contribute to the establishment and survival of S. cincticeps during periods of prey scarcity.
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