What is a potential outcome of vertebrates feeding on cankers and rust diseased tissue?

Vertebrates feeding on cankers and rust diseased tissue can lead to girdling and killing of limbs and trunks. When these organisms consume affected plant tissue, they may inadvertently damage the vascular tissues of the plants, which are essential for transporting water and nutrients. Girdling refers to the action of removing a ring of bark around the stem or branch, which disrupts the flow of nutrients and can ultimately lead to the death of the plant tissue above the girdle. This process detracts from the plant's vitality, resulting in potential limb and trunk death.

In contrast, the other outcomes—such as increased fruit production, stronger tree growth, and enhanced soil fertility—are not directly related to the actions of vertebrates feeding on diseased tissues. Instead, they suggest positive effects that are unlikely to occur as a result of consuming harmed plant materials. Thus, the accurate implication of vertebrates feeding on unhealthy plant tissue is the harmful impact leading to girdling and potentially lethal effects on the trees.