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Microbes

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Hyphae filamentous structure and mycelium mass of hyphae ... Flat, bilaterally symmetrical, leaf like, pointed ends. Parasites -EID ... Ingestion of undercooked meat ... – PowerPoint PPT presentation

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Title: Microbes


1
Microbes
  • Lab 4

2
Yeasts Kingdom Fungi
  • Saccharomyces
  • Budding yeasts
  • Eukaryotic
  • Baking and brewing

3
Molds
  • Hyphae filamentous structure and mycelium mass of
    hyphae
  • Aspergillus (rye bread mold) opportunistic
    infections 10 hospital infections
  • Pencillium blue-green mold on bread, fruits, and
    nuts. Fleming 1927. Antibiotics
  • Rhizopus black bread mold. Infections in humans.
    Plant pathogen

4
Helminths Parasites Phylum Platyhelminthes and
Phylum Nematoda
  • Phylum Platyhelminthes (Flatworms)
  • Flukes (Trematoda) and Tapeworms (Cestoda)
  • Phylum Nematoda (Roundworms)
  • Pinworm, hookworm, and ascaris

5
Clonorchis
  • Phylum PlatyhelminthesClass TrematodaClonorchis
    sinensis - human liver fluke
  • Chinese liver fluke
  • Flat, bilaterally symmetrical, leaf like, pointed
    ends
  • Parasites -EID
  • Named for the region they infect
  • Monoecious one house
  • hermaphroditic

6
Fluke cercariae (juvenile)
  • The parasitic larva of a trematode worm, having a
    tail that disappears in the adult stage.
  • Cercaria leave first intermediate host and enters
    second (actively swims towards fish)
  • attaches to the fish and burrows into the skin
    (loses tail)
  • once inside, the cercaria encyst into a
    metacercaria and wait for definitive host to eat
    the fish
  • fluke excysts in definitive host and migrates up
    the bile duct

7
Taenia Tapeworm
  • Phylum Cestoda
  • Adult scolex and proglottid
  • Beef, Pork tapeworm
  • taeniasis
  • members of this genus have an "armed" scolex,
    meaning that there are hooks on the "head"
    region.
  • Proglottids farthest from the head release eggs
    when deteriorating
  • humans usually serve as a definitive host, eating
    infected meat, fostering adult tapeworms in the
    intestine, and passing eggs through feces,

8
Enterobius Pinworm
  • Phylum Nematoda
  • Adult
  • Small with long pointed tail
  • Eggs
  • have a characteristic shape, with an asymettrical
    form, flattened on one side
  • Extremely contagious

9
Necator Hookworm
  • Phylum Nematoda
  • Infective Larvae
  • Live in the soil passed through the skin
  • Cause anemia and malnutrition

10
Trichinella Larvae (encysted)
  • Phylum Nematoda
  • Trichinellosis, also called trichinosis
  • Ingestion of undercooked meat
  • excysted larvae then invade the intestinal
    mucosa, develop through four larval stages

11
Phylum Arthropoda Arthropods
  • Tick- Class Arachnida
  • Mosquito -Class Insecta
  • Flea -Class Insecta
  • Vectors-Transmit disease

West nile virus
The plague
Lyme disease
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