ENWC314 Lecture Notes - Lecture 11: Phocine Distemper Virus, Chestnut Blight, Harbor Seal

• School: University of Delaware
• Department: Entomology and Wildlife Conservation
• Course: ENWC314
• Professor: York Joanna

Document Summary

Parasitism and hosts: parasite feeds o(cid:374) a si(cid:374)gle i(cid:374)di(cid:448)idual a(cid:374)d usually does(cid:374)"t kill its host, (cid:272)o(cid:374)t. development. Infection: caused by a pathogen living on or in its host, pathogen may be bacteria, fungus, virus, prion (protein body, some parasites may be pathogens (e. g. , certain spirochete bacteria, challenging to pinpoint exact cause of disease exact pathogen. Parasite: an organism that grows, feeds, and is sheltered on or in a different organism but does(cid:374)"t (cid:272)o(cid:374)tri(cid:271)ute to host"s sur(cid:448)i(cid:448)al, commonly involve complex life cycles with more than one host. Usually is i(cid:374) (cid:862)(cid:272)lose(cid:863) asso(cid:272)iatio(cid:374) to host: parasites often invade specific tissues in the host, e. g. , reproductive tissue. Parasite diversity: almost every plant and animal harbors parasites and pathogens, for example, 29,000 fish species have 100,000 parasites, long evolutionary time to have species radiation. Includes ecto- and endo- parasites: parasites are typically specific to one host.