1 / 36

Arthropods

Arthropods. BIOL 1407. Phylum Arthropoda. Cheliceriformes Horseshoe Crabs Arachnids: spiders, scorpions, ticks, mites Myriapoda: millipedes and centipedes Hexapoda: insects and springtails Crustacea: crabs, lobsters, barnacles, etc. Cheliceriformes: Horseshoe Crabs.

bernad
Download Presentation

Arthropods

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Arthropods BIOL 1407

  2. Phylum Arthropoda • Cheliceriformes • Horseshoe Crabs • Arachnids: spiders, scorpions, ticks, mites • Myriapoda: millipedes and centipedes • Hexapoda: insects and springtails • Crustacea: crabs, lobsters, barnacles, etc.

  3. Cheliceriformes: Horseshoe Crabs

  4. Cheliceriformes: Arachnids

  5. Cheliceriformes: Arachnids Video: Click on “Trapdoor Spider” and “An Amazing Web” http://www.bbc.co.uk/sn/tvradio/programmes/lifeintheundergrowth/video.shtml

  6. Myriapods Millipede Centipede

  7. Hexapods: Insects Photo Credit for Caterpillar: UNK Student, Vieques 2008 Videos: Click on “Titan Beetle”, “Moth and Lantern Bug”, “Feather-Legged Bug”, “Bot Flies”, “Giant Asiatic Honeybees”, and “Mangrove Ants”. http://www.bbc.co.uk/sn/tvradio/programmes/lifeintheundergrowth/video.shtml

  8. Hexapods: Springtails Photo Credit: Sarefo, 2005 Wikimedia Commons Video: Click on “Dancing Springtails” http://www.bbc.co.uk/sn/tvradio/programmes/lifeintheundergrowth/video.shtml

  9. Crustaceans Photo Credit for Spiny Lobster: UNK Student, 2008, Vieques

  10. Crustaceans Photo Credit for Artermia: Betsy Maxim, 2008

  11. Characteristics of Arthropods • Bilateral symmetry • Triploblastic • Coelomate • Photo Credit: Alvesgaspar, 2008, Wikimedia Commons

  12. Characteristics of Arthropods • Segmentation • Chitinous Exoskeleton • Photo Credit for Striped Love Beetle: Adrian Pingstone, 2005, Wikimedia Commons

  13. Characteristics of Arthropods • Jointed Appendages • Photo Credit for Praying Mantis in Defense Posture: Tibor Duliskovich, 2007, Wikimedia Commons

  14. Characteristics of Arthropods • Ecdysis • Video of Cicada Nymph Molting:http://www.youtube.com/watch?v=go4MqVq9HVM • Photo Credit: Macau500, 2004, Wikimedia Commons

  15. Characteristics of Arthropods • Complete Digestive System • Open Circulatory System • Gills or book lungs or tracheal tubes • Centralized nervous system

  16. Metamorphosis • Developmental stage in insects • Young feeding form  adult reproductive form

  17. Incomplete Metamorphosis • Young resemble adults • Smaller with different proportions • Photo Credit for Eurydema oleraceum nymph: James K. Lindsey, 2007, Wikimedia Commons • Photo Credit for Eurydema oleraceum adult: Guido Gerding, 2006, Wikimedia Commons

  18. Complete Metamorphosis • Larval stages do not resemble adults • Pupa stage  transformation • Video: http://www.youtube.com/watch?v=GTUgUEpqBrA&feature=related • Photo Credit for Monarch Butterfly Pictures: Derek Ramsey, 2006 (adult), 2007 (caterpillar), Wikimedia Commons

  19. Wings Photo Credit: André Karwath, 2005, Wikimedia Commons

  20. Complete Digestive System

  21. Transport • Open Circulatory System • Heart = Pump • Vessels • Hemolymph = Fluid

  22. Gas Exchange • Gills • Book Lungs • Tracheal Tubes • Respiratory Pigments • Hemocyanin (crustaceans and horseshoe crabs) • Photo Credit for Terebellid Polychaete: Matthias Buschmann, 2007, Wikimedia Commons

  23. Cellular Respiration • Food is needed to provide fuel for cellular respiration • Cellular respiration: • ATP • Use O2 • Release CO2 CO2 O2

  24. Surface-Area-to-Volume • As body size ↑, Surface Area increases more slowly than Volume increases • Large bodies have smaller surface-area-to-volume ratio than small bodies

  25. Surface-Area-to-Volume • Exchange occurs across surfaces • Dependent upon surface area • Folding ↑ Surface Area

  26. Surface-Area-to-Volume • Volume determines demand for: • Materials • Energy • Oxygen • Volume generates: • Metabolic Wastes • Carbon Dioxide

  27. Advantage of Folding • Folding of internal structures increases surface area • Exchange rate can meet demands of organism

  28. Arthropod Excretory Systems: Antennal Glands and Malpighian Tubules

  29. Centralized Nervous System

  30. The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8th ed. Pearson Benjamin Cummings.

More Related