Autoparasitoids, an important class of intraguild predators used in classical biological control, have a unique biology. Females develop as primary endoparasitoids of scale insects and whiteflies. Males develop at the expense of conspecific or heterospecific parasitoid prepupae. To evaluate the effect of autoparasitism on host suppression, system stability, and parasitoid coexistence, stage-str...

ABSTRACT This study aims to report the occurrence of Heilipus draco in seeds Ocotea puberula, and describe main injuries caused effects on germination, as well parasitoid hymenopterans. To this end, fruits seven trees were selected, extreme south Atlantic Forest, Brazil. Fruit collection was carried out weekly middle third canopy, forming lots, from beginning fruit formation until total dehisce...

Cotesia flavipes (Cameron) is a parasitoid responsible for maintaining populations of sugarcane borer, Diatraea saccharalis (F.), below economic levels in south Texas sugarcane Þelds. Transgenic sugarcane expressing the snowdrop lectin (Galanthus nivalis agglutinin, GNA) was developed against the Mexican rice borer, Eoreuma loftini (Dyar), the primary pest of south Texas sugarcane. The potentia...

To successfully exert defenses against herbivores and pathogens plants need to recognize reliable cues produced by their attackers. Up to now, few elicitors associated with herbivorous insects have been identified. We have previously shown that accessory reproductive gland secretions associated with eggs of Cabbage White butterflies (Pieris spp.) induce chemical changes in Brussels sprouts plan...

The diversity of arthropod pests has required the combined use various control methods. application essential oilsshowing insecticidal, repellent or phage-inhibiting activity, together with release natural enemies, can improve integrated pest managementprovided oils display selectivity. aim this study was to evaluate selectivity rosemary pepper [Lippia origanoidesKunth (Verbenaceae)], citronell...

Developmental time, parasitism, emergence, longevity, fecundity and demographic parameters of population of Encarsia bimaculata Heraty and Polaszek (Hymenoptera: Aphelinidae), a parasitoid attacking Bemisia tabaci (biotype B) (Gennadius) (Homoptera: Aleyrodidae) infesting soybean, Glyine max L. (Merr), cowpea, Vigna unguiulata L. and garden bean, Phaseolus vulgaris L. (Fabeles: Fabaceae) were q...

Egg parasitoids foraging for suitable hosts scattered in the environment rely mainly on chemical cues. Elucidating ecology of natural enemies is important development effective and successful strategies conservation biological control. In this context, host cuticular hydrocarbons, which are exploited by several species egg as contact kairomones, could be used to retain them providing informatio...