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Questions and Answers
What do sapsuckers feed on?
What do sapsuckers feed on?
- The cambium and inner bark of a tree
- Needles, leaves, shoots, or stems (correct)
- Only the upper surface of the leaf
- All of the leaf except the veins
How do skeletonizers damage leaves?
How do skeletonizers damage leaves?
- They dig between the upper and lower leaf surfaces
- They disrupt the transport of water and nutrients
- They eat all of the leaf except the veins (correct)
- They feed on needles, leaves, shoots, or stems
What is the impact of sapsuckers' feeding on trees?
What is the impact of sapsuckers' feeding on trees?
- They cause less damage than complete leaf eaters
- It can still photosynthesize at a reduced level
- It reduces the ability of the damaged tree to make sugars (correct)
- Leaves have a crinkled appearance and are generally smaller
What do bark borers feed on?
What do bark borers feed on?
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Which insect is an example of a bark borer?
Which insect is an example of a bark borer?
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Study Notes
Forest Ecology and Insects
- Forests are home to a diverse range of organisms, including insects.
- The study of forest insects is known as forest entomology.
Insects' Roles in Forest Ecosystems
- Insects play important roles in forests, including serving as food for wildlife, pollinating plants, and preying on forest pests.
- Some insects cause significant damage to forests, reducing tree growth rates, transmitting diseases, and weakening trees.
Invasive Insect Species
- Many forest insect pests are introduced from other countries and have become invasive species.
- These invasive species have no natural predators, contributing to their destructive impact.
Classification of Insect Pests
- Insect pests can be classified by the type of damage they cause.
- Each insect species has a preferred part of the tree on which it feeds.
Defoliators
- Defoliators eat a tree's leaves or needles, stripping them from entire stands of trees.
- Without leaves or needles, trees cannot make the sugar they need to grow.
- Heavy infestations of defoliators can:
- Slow the growth rate of deciduous trees after one year of defoliation.
- Kill deciduous trees after several years of defoliation.
- Kill evergreen trees after just one year of defoliation.
Example of a Defoliator
- The spongy moth is an example of a defoliator insect.
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