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The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

12. The Eukaryotes: Fungi, Algae, Protozoa, and Helminths. The Helminths. Table 12.1. Helminths (Parasitic Worms). Eukaryotic Multicellular animals Chemoheterotrophic Kingdom: Animalia Phylum : Platyhelminthes (flatworms) Class: Trematodes (flukes) Class: Cestodes (tapeworms)

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The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

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  1. 12 The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

  2. The Helminths Table 12.1

  3. Helminths (Parasitic Worms) • Eukaryotic • Multicellular animals • Chemoheterotrophic • Kingdom: Animalia • Phylum: Platyhelminthes (flatworms) • Class: Trematodes (flukes) • Class: Cestodes (tapeworms) • Phylum: Nematodes (roundworms)

  4. Trematodes Cyst of lung fluke from human Figure 12.25

  5. Humans as Definitive Host Figure 12.26

  6. Cestodes – Tape Worms • Beef and Pork Tapeworms • Humans are the definitive host • Maximum length of 6 meters Figure 12.27

  7. Humans as Intermediate Host Small worm in comparison to beef and pork species Figure 12.28

  8. Nematodes: Eggs Infective for Humans Pinworms Figure 12.29

  9. Nematodes: Larvae Infective for Humans Figure 25.26

  10. Arthropods as Vectors • Kingdom: Animalia • Phylum: Arthropoda (exoskeleton, jointed legs) • Class: Insecta (6 legs) • Lice, fleas, mosquitoes • Class: Arachnida (8 legs) • Mites and ticks • May transmit diseases (vectors) Figures 12.31a, 12.32

  11. Arthropods as Vectors Figure 12.33

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