KEY CONCEPT Arthropods and humans interact in many ways.

1
KEY CONCEPT Arthropods and humans interact in
many ways.
2
Arthropods and humans share many of the same
resources.

• Many arthropods are herbivores that eat plants
  humans also depend on.
• Arthropods cause millions of dollars of crop
  damage.
• Insecticides have unwanted side effects.

3

• Scientists have developed safer insecticide
  alternatives.

• arthropod-specific insecticides
• integrated pest management (IPM)
• genetically modified crops

4
Some arthropods can spread human diseases.

• Vectors are organisms that carry disease from one
  host to another.

5

• Disease spread by arthropods have serious effects
  on human populations.

• Bubonic plague is caused by a bacterium carried
  by fleas.
• Yellow fever is caused by a virus carried by
  mosquitoes.
• Malaria is caused by a protozoan parasite carried
  by mosquitoes.
• West Nile virus is caused by a virus carried by
  mosquitoes.