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helminths, nematodes/roundworms
(all nematodes are roundworms, but not…
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nematodes/roundworms
(all nematodes are roundworms, but not all roundworms are nematodes!)
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modification of the tail
non-bursate
occassionally small projections, but not bursae
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trematodes/flukes
two main groups
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dignenea
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small, dorsoventrally flattened --> flatworms
simple anatomy, no segmentation
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nutrient uptake
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actin spines - anchoring, causes secretion by cells
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examples
schistosomes
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intermediate host: mud snails, aquatic snails
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