110 likes | 356 Views
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)
E N D
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) • Phylum: Nematodes (roundworms)
Trematodes Cyst of lung fluke from human Figure 12.25
Humans as Definitive Host Figure 12.26
Cestodes – Tape Worms • Beef and Pork Tapeworms • Humans are the definitive host • Maximum length of 6 meters Figure 12.27
Humans as Intermediate Host Small worm in comparison to beef and pork species Figure 12.28
Nematodes: Eggs Infective for Humans Pinworms Figure 12.29
Nematodes: Larvae Infective for Humans Figure 25.26
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
Arthropods as Vectors Figure 12.33