9) Some nonnative insect species have become pests in the United States. To control and
manage these insect
pests, several different types of control have been designed
:
•
Biological controls: A natural predator of the insect pest species is introduced into the
areas that are most harmed by the insect pest.
Cultural controls: People are educated in ways that help to minimize the impact of
nonnative insect pest species. For example, farmers
can change how they plant or water
crops, or people who burn wood can be sure
not to transport firewood that may contain
the insect pests into new areas.
Mechanical and physical controls: Mechanical and physical controls are used to kill insect
pest species directly or to make where they live
unsuitable for them. These controls
include traps, such as box
traps for flies, and physical barriers, such as screens.
⚫ Chemical controls: Pesticides are chemicals that either kill the insect pests or lure them
into containers where
they die. These pesticides are usually liquids that may be broadly
sprayed, used as bait, or sprayed
in very small areas.
Select one of the controls listed above and evaluate its strengths and weaknesses with respect
to maintaining biodiversity.