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Approches de la lutte biologique contre les insectes ravageurs et pathogènes

Approches de la lutte biologique contre les insectes ravageurs et pathogènes


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About the Book

Les ravageurs sont des espèces qui s'attaquent à une ressource que nous, les êtres humains, voulons protéger, et qui le font avec suffisamment de succès pour devenir soit importantes sur le plan économique, soit très gênantes. Ils ne représentent qu'une infime partie des espèces d'insectes qui nous entourent. Même la plupart des espèces que nous considérons comme des ravageurs importants ne causent qu'occasionnellement des dommages significatifs à nous ou à nos ressources. Les ennemis naturels jouent un rôle important dans la limitation des densités de ravageurs potentiels. Cela a été démontré à maintes reprises lorsque les pesticides ont dévasté les ennemis naturels des ravageurs potentiels. Les insectes qui n'avaient auparavant qu'une faible importance économique deviennent souvent des ravageurs nuisibles lorsqu'ils échappent au contrôle de leurs ennemis naturels. Inversement, lorsqu'une méthode non toxique est trouvée pour contrôler un ravageur clé, la réduction de l'utilisation des pesticides et l'augmentation de la survie des ennemis naturels réduisent fréquemment le nombre et les dommages des espèces de ravageurs secondaires autrefois importantes.Les trois catégories d'ennemis naturels des insectes ravageurs sont: les prédateurs, les parasitoïdes et les agents pathogènes.Prédateurs: De nombreux prédateurs différents se nourrissent d'insectes. Les insectes constituent une part importante du régime alimentaire de nombreux vertébrés.


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Product Details
  • ISBN-13: 9786206015642
  • Publisher: KS Omniscriptum Publishing
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 159 gr
  • ISBN-10: 6206015645
  • Publisher Date: 22 May 2023
  • Height: 229 mm
  • No of Pages: 100
  • Spine Width: 6 mm
  • Width: 152 mm


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