22 авг. 2018 г. · caused by a combination of damage to the bark and vascular tissue by the beech scale insect (Cryptococcus fagisuga), followed by infection with ...

In North America, the disease occurs after extensive bark invasion by Xylococculus betulae and the beech scale insect, Cryptococcus fagisuga. History and distribution · Mechanism of infection

Beech bark disease occurs when an invasive beech scale insect feeds on the bark of the tree, creating cracks that allow a native canker fungi to enter.

It is caused by the non-native beech scale insect (Cryptococcus fagisuga) and a fungal pathogen (Neonectria species).

The disease is typically a result of the infestation and feeding by the beech bark scale, Cryptococcus fagisuga, predisposing beech trees to infection by two ...

Beech bark disease (BBD) is a disease-insect complex that involves both non-native (Cryptococcus fagisuga) and native (Xylococculus betulae) scale insects.

15 июн. 2022 г. · Beech bark disease (BBD) is a serious disease that results from a combination of feeding damage by a scale insect and cankers caused by a fungal pathogen.

Minute wounds and injuries caused by the scale insects eventually enable the Nectria fungus to enter the tree. Nectria kills areas of woody tissue, sometimes ...

18 июл. 2014 г. · Beech bark disease is an insect-fungus complex caused by a beech scale insect and a canker fungus. The disease causes severe cankering, ...