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Phylum Arthropoda Trilobites, Chelicerates, & MyriapodsDonald Winslow 7 March 2008 Hickman et al. 2008 Ch. 19 pp Crustaceans: Ch. 20 pp , Insects: Ch. 21 pp
Phylum Arthropoda Diversity & abundanceExoskeleton & chitin, ecdysis (molting) Somites, tagmata, jointed appendages Complex muscular system, no cilia Open circulatory system & hemocoel Mouthparts, complete digestive tract Excretory glands & Malpighian tubules
Arthropod respirationBody surface Gills Lungs Tracheae
Arthropod nervous systemCerebral ring Two ventral nerve chains Complex sensory organs Ocelli & compound eyes Complex behavior
Arthropod reproductionUsually dioecious w/ internal fertilization Oviparous or ovoviviparous or viviparous Sometimes parthenogenesis Development often by metamorphosis
Phylum Arthropoda Subphylum Trilobita Subphylum Myriapodaextinct marine animals Subphylum Myriapoda Centipedes & millipedes Subphylum Chelicerata Horseshoe crabs, spiders, scorpions, etc. Subphylum Crustacea—crustaceans Subphylum Hexapoda—insects
Subphylum Chelicerata2 chelicerae, 2 pedipalps 8-10 legs No mandibles or antennae Class Merostomata Subclass Xiphosurida (horseshoe crabs) Class Pycnogonida (sea spiders) Class Arachnida Spiders, scorpions, harvestmen, ticks & mites
Horseshoe crabs Carapace Abdomen Telson Eyes 10 legs Book gills
Sea spiders Males carry egg masses w/ ovigers Class Pycnogonida
Class Arachnida Order Araneae Order Scorpiones Order Opilionesspiders Order Scorpiones scorpions Order Opiliones Harvestmen (Daddy long-legs) Order Acari Ticks & mites
Spiders Pedicel joins cephalothorax & abdomenBook lungs and/or tracheae & spiracles Malphigian tubules & excretory glands 8 ocelli, sensory setae, poison, webs Brain, suboesophageal ganglion Sinuses Sperm from M pedipalps to F receptacle
Spider feeding & defenseInsect predation Dangerous spiders Black widow Brown recluse (fiddleback)
Scorpions Cephalothorax Preabdomen Postabdomen with stinger
Order Opiliones Harvestmen or Daddy Long-legs Scavengers
Ticks & mites Terrestrial or aquatic, sometimes parasiticMouthparts on capitulum Cephalothorax & abdomen fused Chiggers, scabies, Lyme disease Rocky Mountain Spotted Fever Dust mites, follicle mites
Myriapods Head & trunk, many somites Class Chilopoda (centipedes)Predators, poison fangs, 2 legs per segment Class Diplopoda (millipedes) 4 legs per abdominal segment
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9. Arthropods Largest and most successful phylum in the animal kingdom. 85% of all animals! Exoskeleton made of Chitin (light/hard polysaccharide). Jointed.
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Makes up 3/4's of all animal species Includes insects, spiders, scorpions, millipedes, centipedes, crabs, lobsters, & crayfish Arthropod means "jointed.
PHYLUM ARTHROPOD BY: ARIANA MEJIA. CHARACTERISTICS Segmented body plan Exoskeleton Has an open circulatory system Nervous system has a dorsal.
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Phylum Arthropoda. 1.Arthropoda – “jointed legs” A. Segmented bodies, jointed appendages, and a tough exoskeleton made of chitin. 1). 3 layers a) Outer.
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Phylum Arthropoda. ARTHROPODS Largest Phylum o Insects Bilateral symmetry Segmented bodies Exoskeleton of chitin & protein o Ecdysozoa.
Arthropods and Their Relatives
Phylum Arthropoda “jointed appendaged animals’
-The exoskeleton is made up of chitin and protein. a. Provides protection b. Provides points of attachment for the muscles that move appendages -The animal.
Phylum Arthropoda. Typical Arthropod Structures Means “Joint-foot” Includes lobsters, crabs, spiders, insects, millipedes, & centipedes Bodies w/segments.
Arthropod Groups David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © October, 2004, D.J. Shetlar, all.
The Arthropods Keith Power. * Arthropods are by far the most successful of all animals * Well over 1,000,000 species * Some say over 30 million species.
Phylum Arthropoda. Arthropods Make up about 80% of the known animal species Insects are by far the most common species of arthropods Arthropod means.
Phylum Arthropoda General characteristicsGeneral characteristics –largest group by sheer numbers – total number exceeds that of all other kinds of animals.
Phylum Arthropoda By: Kane Richardson. What is an Arthropod? Arthropods pollinate many of the flowering plants on Earth. Arthropods pollinate many of.
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Arthropods Jointed-legged invertebrates. There are more species in the Phylum Arthropoda than in all the other animal phylums combined. (There are over.
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Classification- Phylum Arthropoda Chapter 19 Subphylum Trilobita (extinct) Subphylum Trilobita (extinct) Subphylum Chelicerata Subphylum Chelicerata Class.
Phylum Arthropoda. Protostome Eucoelomate Ecdyzoa Jointed Appendages Thick, chitin exoskeleton Tagmata – grouping/fusion of segments.
Phylum Arthropoda – Phylum and Subphyla Characteristics Phylum Characteristics: segmented body (tagmata), chitinous exoskeleton; jointed appendages; highly.
Phylum Arthropoda (The Arthropods) By far and away, the most successful animal group ever to live Consists of over 1 million named species, 2 of every.
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