hp 9:13

  1. Ectoparasites on fish one in mammals
    Class monogenea tapeworms
  2. live only in mollusks
    Class Turbellaria subc aspidogastrea
  3. at least 2 hosts in life cycle class
    turbellaria subc digenea bilaterally symmetrical, triploblastic, acoelomate
  4. trematodes lack..
    circulatory, skeletal, respiratory systems mouth is responsible for ins and outs
  5. flame cells-terminal tubules-collecting tubules-excretory bladder
    osmoregulatory system
  6. cerebral ganglion-longitudinal nerve cords-transverse ring commisures
    orthagon nervous system
  7. chemoreceptors, tangoreceptors
    types of trematode receptors monoecicus except schistose
  8. loses cilia, gain tegument, no digestive tract, germinal sac
    sporocyst rudimentary digestive tract, germ balls,
  9. Haemocyte mobility is reduced, lose adhesion, lower superoxide and phagocyte
    interference hypothesis
  10. redia move to reproductive structure of snail feed on and destroy
    parasitic castration
  11. peptide hormone overproduced with larval infection
    hormone manipulation exits snail via escape glands, lives 1-3 days
  12. Infects 2nd IH
    Type B Cercaria
  13. infects DH directly
    Type C cercaria
  14. Post-acetabular glands attach, pre-acetabular glands penetrate
    infection of host
  15. egg-metacerc-sporocyst
    metamorphosis stage
  16. many radia-many cerc-many metacerc
    proliferation increases chance of host being ingested parasite influences physical attributes
  17. anucleate area of syncytium, multilamellar vesicles, discoid bodies
    distal cytoplasm
  18. nuclei and organelles, repair and maintenance of distal cytoplasm
    proximal cytoplasm
Card Set
hp 9:13
general trematode info