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A rachnida. Jake Reicker , Jacqueline Bradbury, Brandon Nilsen , Josh Cullen . Introduction. Phylum: Arthropoda Subphylum: Chelicerata Class: Arachnida Number of Known F amilies: 648 Order: - PowerPoint PPT Presentation
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Jake Reicker, Jacqueline Bradbury, Brandon Nilsen, Josh Cullen
Arachnida
Introduction Phylum: Arthropoda Subphylum: Chelicerata Class: Arachnida Number of Known Families: 648 Order:
Acari, Amblypygi, Araneae, Haptopoda, Opiliones, Palpigradi, Phalangiotarbida, Pseudoscorpions, Ricinulei, Schizomida, Scorpiones, Solifugae, Trigonotarbida and Thelyphonida.
Distinguishing Physical Traits 8 Legs in Adult Life
Stage Breath by Book Lungs Do not possess jaws,
antennae or wings.
Chelicerae & Pedipalps Bodies are in two parts
Distinguishing Physical Traits
Behavioural Traits Cannibalism Males give gifts and dance to attract
mates Solitary lifestyle Largely inactive,
opportunistic eaters
Peacock spider mating dance
Environment
Scorpions Found on all continents
(bar Antarctica), though not natively to all. Found in every terrestrial habitat with the exception of boreal
habitats.
Spiders Found on every continent Almost every terrestrial
habitat
Environment Ticks & mites
Terrestrial & aquatic Widely distributed – Warm, humid
climates Mites in the Antarctic Two requirements must be met for an ecosystem to
support ticks High host population High humidity
Common microclimate features: sandy soil; hardwood trees; rivers; and the presence of deer.
Evolution Arachnida evolved from the group Chelicerata Complex relationship between orders Four main categories Stethostomata,
Haplocnemata, Acaromorpha & Pantetrapulmonata
Scorpions among first land based animals with other species of arachnids appearing later
Evolutionary Advantages Arachnids are an extremely robust species
due to their evolutionExoskeleton is strong, lightweight and
water proof Ease of movement Sensory organs
Life cycle/reproduction
Life cycle/reproduction
Fun Facts Spiders produce seven kinds of
silk - Ranging from sticky silk to trap prey, to super-strong thread for support
Scorpions are among the only animals known to survive nuclear exposure and they also glow under UV light
Arachnida is a part of the biggest and most diverse phylum; Arthropoda. It consists of ~1.1mil species recorded.
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• Clarkson, Jesse. "Evolution and paleontology." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 8 Mar. 2014. <http://www.britannica.com/EBchecked/topic/529352/scorpion/47768/Evolution-and-paleontology>.• "Arachnid." Wikipedia. Wikimedia Foundation, 22 Mar. 2014.
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• "SPIDERLINGS." Spider Facts. N.p., n.d. Web. 29 Mar. 2014. <http://www.kidzone.ws/lw/spiders/facts08.htm>.• "Araneae - spiders." Araneae - spiders. N.p., n.d. Web. 29 Mar.
2014. <http://www.ento.csiro.au/education/allies/araneae.html>.• "Panarthropoda.de - General - Scorpions." Panarthropoda.de -
General - Scorpions. N.p., n.d. Web. 29 Mar. 2014. <http://www.panarthropoda.de/sub/allgemeines/paarungskorpioneen.php>.• Gary A. Polis (1990). The Biology of Scorpions. Stanford University
Press.ISBN 978-0-8047-1249-1.• Wall, Richard & David Shearer (2001). "Ticks (Acari)". Veterinary
Ectoparasites: Biology, Pathology, and Control. John Wiley & Sons. pp. 55-60. ISBN 978-0-632-05618-7.• http://journals.cambridge.org/download.php?file=%2FPOL
%2FPOL39_03%2FS0032247403003097a.pdf&code=147a6e441943f3396dc05fe2f918880a
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