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L15_Fish_PsitesCOLOR - Parasitology for the Ichthyologist 1...

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• Parasitology for the Ichthyologist • 1 - Everything is parasitized • 2 - parasites affect fitness – pathology is related to intensity (# parasites on a fish) – Sexual selection may be mostly about parasites – Cost of resistance can be very hi – Arms race between parasite virulence and host defense • 3 - Parasites effect host behavior – Trophic transmission: prey hosts are eaten by prey hosts • 4 - Different host groups have different parasites – Compare mammals and fishes
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Parasite Group Mammals Fishes Protozoa Amebas +++ +? Ciliates + +++ Microspora + +++ Myxozoa - +++ Flatworms Digenea (flukes) +++ +++ Monogenea + +++ Cestoda (tapeworms) +++ +++ Arthropoda Insects (fleas, lice) +++ - Crustacea (isopods, copepods) - +++ ticks +++ - mites +++ -
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Ichthyophthirius ciliates
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Phylum Platyhelminthes Class Monogenea- primarily on fishes On skin, gills, mouth, cloaca
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This note was uploaded on 01/10/2012 for the course EEMB 106 taught by Professor Staff during the Spring '08 term at UCSB.

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L15_Fish_PsitesCOLOR - Parasitology for the Ichthyologist 1...

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