BIOL 2Q04 Lecture Notes - Lecture 15: Viral Load, Leucochloridium, Zombie

• School: Brock University
• Department: Biological Sciences
• Course: BIOL 2Q04
• Professor: Liette Vasseur

Document Summary

Interaction in which disease organisms lives within or on a host plant or animal: disease agents always benefits, hosts almost always is negatively affected. Takes a lot of energy and resources to allow for their growth. Grows at an alarming rate and causes adverse effects, often times death. If you were a disease organism, why is it important not to kill your host: hosts help you transmit to the next host, and you need the host for resources. Parasitism is similar to disease in biotic interactions but differs as parasites are large multicellular organisms: requires multiple hosts. Macroparasites: tape worms, hook work, round worm, spirochetes (between macro/microparasites) (cid:862)dar(cid:449)i(cid:374)ia(cid:374) medici(cid:374)e(cid:863) (cid:894)willia(cid:373)s & nesse (cid:1005)(cid:1013)(cid:1013)(cid:1005)(cid:895: almost all plants, animals and humans harbour pathogens and parasites, these pathogens can cause high mortality (virulent) or cause sub-lethal effects. Virulent refers to mortality; how much mortality the disease agents cause: sub-lethal effects can lead to decreased productivity of an animal, but not death.