Here's how it works:
* The parasite: The western dwarf mistletoe is a small, flowering plant that grows as a parasite on Douglas-fir trees.
* The host: Douglas-fir trees are the primary host for this mistletoe.
* The parasitic relationship: The mistletoe attaches to the tree's branches and sends specialized roots, called haustoria, into the tree's vascular system. These haustoria steal water and nutrients from the host tree.
* The impact: The mistletoe's parasitic activity weakens the host tree by robbing it of resources. This can lead to:
* Reduced growth rate
* Increased susceptibility to other diseases and pests
* Deformed branches
* Eventually, the tree may die.
This example clearly shows how the mistletoe benefits at the expense of the Douglas-fir tree, illustrating the classic parasitic relationship.
