TREMATODES Flashcards
GENERAL CHARACTERISCTICS
Unsegemented bodies
Complete digestive tract with ACETABULA (SUCKERS)
HERETOXENOUS (2 or more hosts)
Attachment
Ventral Sucker
Acquisition of food
Oral Sucker
MONOECIOUS/HERMAPHRODITIC
Clonorchis spp
E.ilocanum
F. buski
F.gigantixa
F.hepatica
H.heterophyes
M.yokogawaii
Opistorchis spp.
P.westermani
DIOECIOUS/NON-HERMAPHRODITIC
Schistosoma spp.
Lungs
P.westermani
Liver and bile ducts
Clonorchis spp.
F.hepatica
Opistochis
Intestines
E.ilocanum
F.buski
H.heterophyes
F.buski
Blood
Schistosoma spp.
Monoecious characterisctics
Adult morphology: LEAF-LIKE, Flattened
Host requirement: 3 HOST snail, animal(fishes) ,man
Development stage: Operculated eggs
Infective stage: METACERCARCIA
MOT: Ingestion
Dioecious characteristic
Adult morphology: CYLINDRICAL
Host requirement: 2 HOST snail, man
Development stage: NON-operculated eggs
Infective stage: CERCARCIA
MOT: Skin penetration
Oriental LUNG fluke/ COFFEE-BEAN shape
P.westermani
SHEEP LIVER FLUKE/CEPHALIC cone
F.hepatica
Oriental/Chinese LIVER fluke
C.sinensis
SOUTH EAST ASIAN liver fluke
O.viverinni
CAT liver fluke
O.FELINEus
GIANT intestinal fluke
F.buski
GARISSON’S fluke
E.ilocanum
Dwarf/VON SIEBOLD fluke
H.heterophyes
Yokogawai’s fluke
M.yokogawai
Smallest and Most deadly fluke
H.heterophyes
CHOM
C.sinensis, H.heterophyes, Opistorchis, M. yokogawai
Vase shape
Abopercular knob
Fully develop MIRCADIUM w/ cilia
ALWAYS MATURED
All INTERMOLUSCAN STAGE (all snail both 1st and 2nd host)
E.ilocanum
2nd host: Fresh water crustacean
P.westermani
