Biology 2483A Lecture 13: Lecture 13 - Parasitism

18 views4 pages

Document Summary

Symbionts organisms that live in or on other organisms: not all symbionts are parasites. However, more than half of earth"s species are symbionts. Our own bodies can be a home to many other species. A parasite consumes the tissues or body fluids of the organism on which it lives (the host). Pathogens are parasites that cause diseases (an abnormal condition affecting the body of an organism) Parasites typically harm, but don"t immediately kill, the organisms they eat (unlike predators). Compare: the fungus that causes athlete"s foot, and yersinia pestis, the bacterium that causes the plague. Includes herbivores such as aphids or nematodes that feed on one or a few host plants. Parasites typically feed on only one or a few host individuals. Parasitoids insects whose larvae feed on a single host and almost always kill it. Macroparasites large species such as arthropods and worms. Most species are attacked by more than one kind of parasite; even parasites have parasites.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions