23 Kas 2024 Cumartesi
Pathogenicity of The Entomopathogenic Fungus, Purpureocillium lilacinum TR1 Against Ambrosia Beetles, Xylosandrus germanus (Blandford) and Xyleborus dispar (Fabricius) (Coleoptera: Curculionidae: Scolytinae)
Abstract :Xylosandrus germanus and Xyleborus dispar (Coleoptera: Curculionidae: Scolytinae) should be considered a high-risk quarantine
pest. These ambrosia beetles are very polyphagous. It attacks many
deciduous trees, probably all in its distribution range. Chemical control of
them is very difficult and expensive due to its protected breeding sites and
its resistance to many insecticides. In this study, it is searched the effects
of entomopathogenic fungi, [Purpureocillium
lilacinum TR1 (syn: Paecilomyces
lilacinus)] on the BTBB and PBB adults in three conidial suspensions (106,
107and 108cfu ml-1) in laboratory conditions.
The data for mortality was recorded after 2, 4, 6 and 8 days intervals. The mortality rate was found
respectively after 8 days %94.72 for Xylosandrus germanus and %100
for Xyleborus dispar in 108cfu ml-1. It will be appropriate that
the results obtained from this first study performed in laboratory conditions
should also to be tried in the field conditions for the control of ambrosia
beetles, Xylosandrus germanus
and Xyleborus dispar. It is hoped
that the study will be helpful in the control strategies of this beetle species
that will be put forward in a future time. It is seen that after having
obtained hopeful results from this study, making similar works on the other
beetle species are also necessary
Entomopathogenic
fungi, Purpureocillium lilacinum, Xylosandrus germanus, Xyleborus dispar, Ambrosia beetles