No adverse effects of symbiotic control on the parasitism of Halyomorpha halys by egg parasitoids

Abstract The brown marmorated stink bug Halyomorpha halys is a polyphagous insect, which has devastating impact on agricultural production in many countries. alteration of symbiont vertical transmission, by removing symbionts from eggs (symbiotic control), been recently introduced control programmes against this insect. A major advantage strategy the compatibility with natural enemies, since it allows an insecticide-free approach that not harmful to other agroecosystem components. However, effect anti-symbiont products parasitism egg parasitoids still unexplored. Here, we investigated native ( Anastatus bifasciatus , Ooencyrtus telenomicida and Trissolcus kozlovi ) exotic japonicus mitsukurii attack H. eggs, after treatment micronutrient biocomplex Dentamet ® used for symbiotic control. wasp species were tested no-choice bioassays, showing masses did affect emergence percentages, but non-reproductive effects often reduced biocomplex. T. paired choice opposite influence percentage preference two species. No-choice tests indicated highest successful parasitoid biocomplex-treated while no comparison treated water or untreated. In contrast, displayed lowest tests, preferred without tests. We record any acquisition emerged masses, indicating fitness very unlikely be altered dysbiotic resulting treatments. Therefore, our results support further implementation different crops combination biological control, as sustainable options integrated pest management.