NATURAL BIOLOGICAL CONTROL OF PESTS AND ECOLOGICAL INTERACTIONS WITH PREDATORS AND PARASITOIDS IN BEAN CROP

作者：Fernandes Flavio Lemes^*; Picanco Marcelo Coutinho; de Sena Fernandes Maria Elisa; Xavier Vania Maria; Martins Julio Claudio; da Silva Valkiria Fabiana

来源：Bioscience Journal, 2010, 26(1): 6-14.

• Natural enemies
• Competitors
• Phytophagous pest
• Bioecology

The bean plants are atacked for phytophagous insects. The insecticides are used to control these pests, this action increase the costs, contaminate the man and environment. Thus, the biological control became essential. Thus, this work aimed to evaluate the potential of the predators and parasitoids for the natural biological control of pest and the ecological relations among those natural enemies and the phytophagous pest and no pest in bean crop. The ages of 10, 20, 35, 50 and 60 days after the planting, the densities of the phytophagous insects and natural enemies were evaluated with leaf shaking on plastic tray. The predators more abundant were Solenopsis invicta, Araneae, Orius sp., Crematogaster sp., Anthicus spp., Franklinothrips sp. and Nabis sp. The most abundant parasitoid was Chrysocharis sp., Trissolcus spp., Telenomus spp. and Trichogramma spp. While the abundance of ants and A. spp. decreased with the age of the plants, population levels of spiders and O. sp. increased at end of the cultivation. Interactions between E. kraemeri and T. tabaci with Araneae, A. spp., O. sp., F. sp. and C. brasiliensis with O. sp. and F. sp. showed direct relationship of population growth. In conclusion the phytophagous insects are important hosts to nutritional maintenance of the predators and parasitoids. In addition, the high diversity of natural enemies is extreme important to avoid the outbreak of pests, resurgences, increase the economic level injury and potential use for natural biological control.

• 出版日期2010-2