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.
Slide 3
Distinguishing Physical Traits 8 Legs in Adult Life Stage
Breath by Book Lungs Do not possess jaws, antennae or wings.
Slide 4
Chelicerae & Pedipalps Bodies are in two parts
Distinguishing Physical Traits
Slide 5
Slide 6
Behavioural Traits Cannibalism Males give gifts and dance to
attract mates Solitary lifestyle Largely inactive, opportunistic
eaters
Slide 7
Peacock spider mating dance
Slide 8
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
Slide 9
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.
Slide 10
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
Slide 11
Evolutionary Advantages Arachnids are an extremely robust
species due to their evolution Exoskeleton is strong, lightweight
and water proof Ease of movement Sensory organs
Slide 12
Life cycle/reproduction
Slide 13
Slide 14
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.
Slide 15
Sources Dunlop, Jason A. "Fossil Focus: Arachnida."
www.palaeontologyonline.com. N.p., 1 Dec. 2011. Web. 01 Apr. 2014.
Evans, Arthur V., Rosser W. Garrison, Neil Schlager, and Michael
Hutchins. "Arachnida." Grzimeks' Animal Life Encyclopedia. Detroit:
Thomson-Gale, 2004. 333-37. Print. Holmes, Thom. "The First Land
Animals." March onto Land: The Silurian Period to the Middle
Triassic Epoch. New York: Chelsea House, 2008. 74-78. Google Books.
Google. Web. Underwood, D.L.A. "Overview of the Class Arachnida."
General Entomology. Longbeach. 27 Mar. 2014. Reading.
Slide 16
Clarkson, Jesse. "Evolution and paleontology." Encyclopedia
Britannica Online. Encyclopedia Britannica, n.d. Web. 8 Mar. 2014..
"Arachnid." Wikipedia. Wikimedia Foundation, 22 Mar. 2014. Web. 23
Mar. 2014.. "How Spiders Work." HowStuffWorks. N.p., n.d. Web. 29
Mar. 2014.
Slide 17
"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.The Biology of ScorpionsStanford
University PressISBN978-0-8047-1249-1 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=147a6e441943f3396dc05fe2f918880
a