Ectoparasites are organisms that live on the external surface of another organism, known as the host, and obtain nutrients by feeding on the host's bodily fluids. Ectoparasites can include various organisms such as fleas, ticks, lice, and mites. They can be found on a wide range of hosts, including mammals, birds, and even reptiles.
Types of Ectoparasites
Fleas: Small, wingless insects that feed on the blood of their hosts.
Ticks: Arachnids that attach to the skin of their hosts and feed on blood.
Lice: Wingless insects that infest the hair and feathers of their hosts, feeding on blood and skin.
Ectoparasites can cause a range of health issues in their hosts, including skin irritation, itching, hair loss, anemia (due to blood loss), and the transmission of diseases.
Prevention and Control
Preventing and controlling ectoparasites involves measures such as regular grooming and inspection of pets, use of flea and tick control products, keeping living spaces clean, and, in some cases, treatment of the host with medication prescribed by a veterinarian.
Study Guide
Key Concepts
Definition of ectoparasites and examples of organisms that can act as ectoparasites.
From Molecules to Organisms: Structures and Processes
Students who demonstrate understanding can:
Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.