Flatworm Web Quest

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Name________________________________________________________________________________________Date_________________Block_____ Flatworm Web Quest http://www.earthlife.net/inverts/platyhelminthes.html 1. What does the name Platyhelminthes mean? 2. What type of symmetry do flatworms have? 3. How do flatworms reproduce? 4. What does it mean to have a blind gut? 5. Flatworms all have a mouth but NO _________________ http://www.ucmp.berkeley.edu/platyhelminthes/platyhelminthes.html 6. Flatworms are called acoelomates, in reference to their body structure. a. Do flatworms have a stomach? 7. How do flatworms breathe? 8. What does it mean to be paraphyletic? http://www.biology-questions-and-answers.com/flatworms.html 9. What does it mean to be triploblastic? a. Name the 3 layers in flatworms. 10. Describe digestion in flatworms. 11. What are Flame Cells? Click on the name of a Class below to learn more: 1. Class Turbellaria (turbellarians, flatworms) a. How many species of Tubellarians are there? b. Describe how Turbellarians swim? c. What do members of Tubellaria eat? d. What is the role of protonephridia 2. Class Trematoda (parasitic flukes) a. What does it mean when it says all Trematodes are parasites? b. What does it meant to have an external layer that is syncytial? c. What causes schistosomiasis? 3. Class Cestoda a. What is the common name for Class Cestoda? b. What are 4 differences between flatworms in Class Cestoda compared to other worms? c. What is a scolex? Why is it needed? TAPEWORM http://www.mayoclinic.com/health/tapeworm/ds00659/dsection=causes 4. How do you get tapeworms? 5. Where does a tapeworm develop from an egg into a larva? 6. How long can an adult tapeworm get? 7. Where can a tapeworm migrate if it leaves the intestines? http://www.merck.com/mmhe/sec17/ch196/ch196p.html 8. What are some of the symptoms a person might experience if they have a tapeworm? 9. How does a person prevent getting infected? 10. How is a person treated if they are infected? PLANARIA http://www.cals.ncsu.edu/course/zo150/mozley/fall/flatworm.jpg Use the Diagram found on this page to identify structures A through K A. B. C. D. E. F. G. H. I. J. K. .

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Platyhelminthes, Nemertea, and "Aschelminthes" - A
BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol. III - Platyhelminthes, Nemertea, and "Aschelminthes" - A. Schmidt-Rhaesa PLATYHELMINTHES, NEMERTEA, AND “ASCHELMINTHES” A. Schmidt-Rhaesa University of Bielefeld, Germany Keywords: Platyhelminthes, Nemertea, Gnathifera, Gnathostomulida, Micrognathozoa, Rotifera, Acanthocephala, Cycliophora, Nemathelminthes, Gastrotricha, Nematoda, Nematomorpha, Priapulida, Kinorhyncha, Loricifera Contents 1. Introduction 2. General Morphology 3. Platyhelminthes, the Flatworms 4. Nemertea (Nemertini), the Ribbon Worms 5. “Aschelminthes” 5.1. Gnathifera 5.1.1. Gnathostomulida 5.1.2. Micrognathozoa (Limnognathia maerski) 5.1.3. Rotifera 5.1.4. Acanthocephala 5.1.5. Cycliophora (Symbion pandora) 5.2. Nemathelminthes 5.2.1. Gastrotricha 5.2.2. Nematoda, the Roundworms 5.2.3. Nematomorpha, the Horsehair Worms 5.2.4. Priapulida 5.2.5. Kinorhyncha 5.2.6. Loricifera Acknowledgements Glossary Bibliography Biographical Sketch Summary UNESCO – EOLSS This chapter provides information on several basal bilaterian groups: flatworms, nemerteans, Gnathifera,SAMPLE and Nemathelminthes. CHAPTERS These include species-rich taxa such as Nematoda and Platyhelminthes, and as taxa with few or even only one species, such as Micrognathozoa (Limnognathia maerski) and Cycliophora (Symbion pandora). All Acanthocephala and subgroups of Platyhelminthes and Nematoda, are parasites that often exhibit complex life cycles. Most of the taxa described are marine, but some have also invaded freshwater or the terrestrial environment. “Aschelminthes” are not a natural group, instead, two taxa have been recognized that were earlier summarized under this name. Gnathifera include taxa with a conspicuous jaw apparatus such as Gnathostomulida, Micrognathozoa, and Rotifera. Although they do not possess a jaw apparatus, Acanthocephala also belong to Gnathifera due to their epidermal structure. ©Encyclopedia of Life Support Systems (EOLSS) BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol.
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I FLATWORM PREDATION on JUVENILE FRESHWATER
FLATWORM PREDATION ON JUVENILE FRESHWATER MUSSELS A Thesis Presented to the Graduate College of Southwest Missouri State University In Partial Fulfillment of the Requirements for the Master of Science Degree By Angela Marie Delp July 2002 i FLATWORM PREDATION OF JUVENILE FRESHWATER MUSSELS Biology Department Southwest Missouri State University, July 27, 2002 Master of Science in Biology Angela Marie Delp ABSTRACT Free-living flatworms (Phylum Platyhelminthes, Class Turbellaria) are important predators on small aquatic invertebrates. Macrostomum tuba, a predominantly benthic species, feeds on juvenile freshwater mussels in fish hatcheries and mussel culture facilities. Laboratory experiments were performed to assess the predation rate of M. tuba on newly transformed juveniles of plain pocketbook mussel, Lampsilis cardium. Predation rate at 20 oC in dishes without substrate was 0.26 mussels·worm-1·h-1. Predation rate increased to 0.43 mussels·worm-1·h-1 when a substrate, polyurethane foam, was present. Substrate may have altered behavior of the predator and brought the flatworms in contact with the mussels more often. An alternative prey, the cladoceran Ceriodaphnia reticulata, was eaten at a higher rate than mussels when only one prey type was present, but at a similar rate when both were present. Finally, the effect of flatworm size (0.7- 2.2 mm long) on predation rate on mussels (0.2 mm) was tested. Predation rate increased with predator size. The slope of this relationship decreased with increasing predator size. Predation rate was near zero in 0.7 mm worms. Juvenile mussels grow rapidly and can escape flatworm predation by exceeding the size of these tiny predators.
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Coinfection of Schistosoma (Trematoda) with Bacteria, Protozoa and Helminths
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Aquatic Critters Aquatic Critters (Pictures Not to Scale) (Pictures Not to Scale)
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Visceral and Cutaneous Larva Migrans PAUL C
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Waterborne Zoonotic Helminthiases Suwannee Nithiuthaia,*, Malinee T
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The Effect of Caffeine and Ethanol on Flatworm Regeneration
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