TREMATODES :FLUKES P190
TREMATODES :FLUKES P190
吸虫Trematode店华枝吸虫布氏姜片虫卫氏并殖吸虫日本血吸虫斯氏狸殖吸虫（肺吸虫）（血吸虫）（肠吸虫）（肝吸虫）FasciolopsisPagumogonimusSchistosomaParagonimusClonorchisbuskiskrjabinijaponicumwestermanisinensis
GeneralcharacteristicsORALSUCKER1.Most adult trematodes arePHARYNXESOPHAGUSflattened,dorsoventrallyGENITALPORECIRRUSVAS DEFERENSbilaterallysymmetric, leaf-EXCRETORYDUCTACETABULUM-VITELLARIAINTESTINALCECUMshaped ortongue-like.TESTIS-UTERUSOVARY2.AllofthemhavetwoOVIDUCTMEHLIS' GLANDSsuckers, an oral and a ventralEXCRETORYBLADDERsucker
General characteristics 1.Most adult trematodes are dorsoventrally flattened, bilaterally symmetric, leafshaped or tongue-like. 2.All of them have two suckers, an oral and a ventral sucker
3. The digestive tract isORALSUCKERdegenerate. The end of-PHARYNXESOPHAGUSGENITALPOREisintestineacecumCIRRUSVAS DEFERENSACETABULUMEXCRETORYDUCTwithout anus.VITELLARIAINTESTINAL CECUMTESTISUTERUS4. The reproductive systemOVARY福OVIDUCTisanddevelopedMEHLIS’ GLANDShermaphroditic except forEXCRETORYBLADDERschistosomes
3. The digestive tract is degenerate. The end of intestine is a cecum without anus. 4. The reproductive system is developed and hermaphroditic except for schistosomes
5.Eggs of most species have卵盖an operculum (lid) and/or肩峰毛蝴a small spine (knob). Thedeveloped egg contains amiracidium, except in thecase of schistosomes.疣状突起
5. Eggs of most species have an operculum (lid) and/or a small spine (knob). The developed egg contains a miracidium, except in the case of schistosomes