BIOL 3454 1nd Edition Lecture 13I. class Turbellariamostly free livingmissing infoII. class Trematoda (class Digenea)III. Digenean reproduction- shelled embryo or larvae- miracidium - free swimmingIV. clonorchis - human liver flukeV. Schistosoma- eggs discharge in human waste- make it into water hatch as ciliated miracidia- miracidia get into snail- make sporocysts- schistosoma - blood fluke- missing life cycle- dont have to digest just swim in water that schistosoma is in- sexually dimorphicVI. swimmers itch- N. America natural lakes- normal hosts are birds- bore into humans by mistake- die releasing irritating chemicals- symptoms resemble mosquito bitesVII. paragonimus - lung fluke- eggs coughed out of lungs swallowed eliminated through feces- zygotes develop in water- miracidium finds snailThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- get into lungs and very dangerous- intermediate host - crabsclass monogenea- parasites usually on gills of fish- few on gills- one on hippo eyesVIII. Class Cestoda- tapeworms- front end is a scolex with hooks for attachment- repeating reproductive segments called proglottids chain of these is strobila- missing info- missing life cycle of tape worm- cattle eat grass- loss weight- urban legend (lard b gone)IX. Phylogeny & playhelminthes- turbellria paraphyletic in current form- planuloid ancestor hypothesis- one branch becomestest wed
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