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Phylum Nematoda: The Round Worms

Over 80000 species Cylindrical pseudocoeloemates Have effective hydroskeleton and musculature Inhabit aquatic areas. Most are parasitic. Most reproduce sexually. Females can produce ~100,000 eggs a day. Tricininella spiralis causes trichinosis in humans from under cooked pork

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Phylum Nematoda: The Round Worms

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  1. Over 80000 species • Cylindrical pseudocoeloemates • Have effective hydroskeleton and musculature • Inhabit aquatic areas. Most are parasitic. • Most reproduce sexually. Females can produce ~100,000 eggs a day. • Tricininella spiralis causes trichinosis in humans from under cooked pork • Parasite burrows into muscle tissue forming cysts • Hookworms and pinworms can parasitize digestive systems • Others cause heartworm and elephantiasis Phylum Nematoda:The Round Worms

  2. Parasitic Nematodes: Roundworm Hookworm

  3. Heartworms

  4. Guinea Worms:

  5. Elephantiasis (Filarial worm)

  6. Life Cycle of Filarial Worm

  7. Trichinosis

  8. Phylum Nemertina • Similar to flat worms • Inclide proboscus worms • Acoelomate, but have functioning digestive tract • Also have a funtioning blood vascular system

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