Comparative suitability of Diaprepes abbreviatus and Pachnaeus litus eggs (Coleoptera: Curculionidae) as hosts for Brachyufens osborni (Hymenoptera: Trichogrammatidae): Implications for their biological control

作者：Diaz Montilla Ana Elizabeth; Jacas Josep A^*; Palacios Palacios Xiomara; Pena Jorge E

来源：Biological Control, 2013, 66(2): 125-131.

DOI：10.1016/j.biocontrol.2013.04.006

• Parasitism
• Host suitability
• Immune response

A classical biological control program was initiated in Florida USA in 1997 against Diaprepes abbreviatus (L.) (Coleoptera: Curculionidae), an exotic root weevil. Florida citrus trees are affected by other weevil pests, i.e., Pachnaeus spp., which have their own indigenous parasitoid fauna. One of these parasitoids, Brachyufens osborni (Dozier) (Hymenoptera: Trichogrammatidae), recognized and accepted D. abbreviatus eggs for oviposition. However, it failed to develop in these eggs. The eggs of this weevil display a physiological defensive response against B. osborni immature stages that prevents development beyond the second larval instar. This response though does not occur in the indigenous Pachnaeus litus Germar. The defensive response was likely cellular in nature.

• 出版日期2013-8