| 摘要 |
<p>When insects, ticks and/or fleas are infected with entomopathogenic fungi, metabolites, such as hydrolytic enzymes and cyclic depsipeptides, are produced, these enzymes degrading the cuticle of the insect, ticks and/or fleas. In addition, these fungi synthesize the biological control activity of plagues as they are found in ecological niches with a high biodiversity and competence. All the mentioned bioactive compounds may be used as bio-insecticides or fungicides, and may be produced by fermentative processes. This invention opens new agro-biotechnological development areas, according to the new trends of the agricultural research at a worldwide level. The entomopathogenic fungi formulation for controlling plagues results from an organic process, this representing a viable alternative. The entomopathogenic fungi avoid the chemical control, which causes side effects to other organisms, including human beings, and the environmental pollution. The application of the bio-controls, along with other alternative methods, allows good yields to be obtained in the cattle sector without damaging the ecosystem. The entomopathogenic fungi are competitive with other control practices, considering their effectiveness, production cost and environmental safety.</p> |
