BIOL 005B Lecture Notes - Lecture 6: Clonorchis Sinensis, Gastrovascular Cavity, Liver Fluke
Document Summary
Classification of animals is based on different criteria at different branching points. Lophotrochozoans, have the widest range of animal body forms. Include flatworms, brachiopods, rotifers, molluscs, gastropods, bivalves, Our focus will be on three phyla. Platyhelminthes live in marine, freshwater, and damp terrestrial habitats ( need. Flattened dorsoventrally and have a gastrovascular cavity. Gas exchange takes place across the surface, and protonephridia regulate the. Lack a circulatory system but fine branches of the gastrovascular cavity distribute. Four classes of flatworms: osmotic balance food to cells. Turbellaria (mostly free-living flatworms) predators and scavengers. Turbellarians are nearly all free-living and mostly marine; The best-known turbellarians are commonly called planarians. Planarians have light-sensitive eyespots and centralized nerve nets. Planarians are hermaphrodites and can reproduce sexually, or asexually through fission. Monogenea (monogeneans, flukes) and trematoda (trematodes, or flukes) animals. Monogeneans and trematodes live as parasites in or on other. They parasitize a wide range of hosts , and most have complex life.
