ch20ppt - Pupates inside or outside host Some feed on host...

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Parasites and Predators
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± Predators – one individual feeds on many hosts in any life stage, killing all of them. ± Parasitoids – one or more individuals feed on one host; usually do not kill the host ± Parasites – many individuals feed on one host, without killing it.
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Two basic types: Sessile predators Active predators
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Order Mantodea
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Order Orthoptera
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Order Diptera
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Order Coleoptera
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Order Hymenoptera
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Ectoparasitism – most primitive form • Egg is placed on outside of host • Host recovers resuming normal • Parasite larva develops tick-like on outside • Consumes host • Pupates Endoparasitism –highly specialized insects • Egg place inside host • Hatches, larva feeds inside host • Overcomes host immune defenses • At the same time are protected inside host
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Unformatted text preview: Pupates inside or outside host Some feed on host Others feed on other parasites in host There may be up to four trophic layers of parasites on/in one host Each parasite is smaller than the last So, naturalists observe, a flea Has smaller fleas that on him prey; And these have smaller still to bite em; And so proceed ad infinitum. Jonathan Swift Order Phthiraptera Bedbugs Kissing bugs Beaver beetles Order Neuroptera Spongilla flies Mantispid Tunga or Chigoe Flea Eye Moth Sloth Moth Bot Flies Black Gnat or Buffalo Gnat Sheep Ked Bat flies Sandflies Mosquitoes Tachinid Flies Screw Worm Order Strepsiptera Parasitoids Mymaromatidae...
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This note was uploaded on 12/03/2009 for the course ENT 100 taught by Professor Kimsey,r during the Fall '08 term at UC Davis.

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ch20ppt - Pupates inside or outside host Some feed on host...

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