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Charles MorrowNSF NMGK8
Heath Capello
PRESENTS
Charles MorrowNSF NMGK8
Heath Capello
SPIDERS
Charlotte’s Web
A Look at Mississippi Spiders
And their Webs
Charles MorrowNSF NMGK8
Heath Capello
Spider Facts
• Have two body parts: head and abdomen
• Have 8 legs and 8 eyes
Charles MorrowNSF NMGK8
Heath Capello
Spider Silk
•Make egg cocoons•A thin strand for lowering•Thick strand for web support•Sticky silk for trapping prey
Charles MorrowNSF NMGK8
Heath Capello
Spider Hunting
•Stalking•Ambushing•Trapping•Biting – venom has digestive juicesused to dissolve prey so that it can be sucked up into mouth
Charles MorrowNSF NMGK8
Heath Capello
Black Widow
Charles MorrowNSF NMGK8
Heath Capello
Black and Yellow Garden
Charles MorrowNSF NMGK8
Heath Capello
Carolina Wolf
Charles MorrowNSF NMGK8
Heath Capello
Crab-like SpinyOrb Weaver
Charles MorrowNSF NMGK8
Heath Capello
Daring Jumping
Charles MorrowNSF NMGK8
Heath Capello
Golden-Silk
Charles MorrowNSF NMGK8
Heath Capello
Venusta Orchard
Charles MorrowNSF NMGK8
Heath Capello
Purse-Web
Charles MorrowNSF NMGK8
Heath Capello
Brown Recluse
Charles MorrowNSF NMGK8
Heath Capello
PRESENTS
Charles MorrowNSF NMGK8
Heath Capello
Charles MorrowNSF NMGK8
Heath Capello
Why Does a Spider Create a Web,
and How?• What are Spider Web made
of?
• What are ways that a spider can use its silk?
• For the creation of a Web (capturing prey)
• To create an Egg-Sac
• To serve as a safety net.
• To find its way back to its home.
Charles MorrowNSF NMGK8
Heath Capello
Spider Silk
Charles MorrowNSF NMGK8
Heath Capello
What is Spider’s Silkand the Properties of Silk
• Made of Proteins
• Properties• 1)Strong• 2)Elastic• 3)Waterproof• 4)Sticky or non-Sticky• 5)Hard To See
• Why are These Properties Important!
Charles MorrowNSF NMGK8
Heath Capello
The Orb Weaver Web
Charles MorrowNSF NMGK8
Heath Capello
Where does a spider usually build its Web?
• Any Suggestions?
• Corners of Buildings• Between plants,
(stems)• Between tree
branches
• HOW DOES THE SPIDER BEGIN?
Charles MorrowNSF NMGK8
Heath Capello
How Does a Spider Begin?
• Animation - Starting a Web
Charles MorrowNSF NMGK8
Heath Capello
Building a Web
Charles MorrowNSF NMGK8
Heath Capello
Do You See The Triangles?
Charles MorrowNSF NMGK8
Heath Capello
Object Recognition
Charles MorrowNSF NMGK8
Heath Capello
Why does the Spider Not Get Caught?
• Different Types of Silk
• Sticky or Not
Charles MorrowNSF NMGK8
Heath Capello
Let’s Review • Silk and Properties
• How not to get caught
• Line Segment
• Triangle
• Spirals
Charles MorrowNSF NMGK8
Heath Capello
Orb Weaver Web
Charles MorrowNSF NMGK8
Heath Capello
Other Types of Webs
Charles MorrowNSF NMGK8
Heath Capello
Single-Line Web
Charles MorrowNSF NMGK8
Heath Capello
Triangle Web
Charles MorrowNSF NMGK8
Heath Capello
Cobweb Weavers or Tangled Web
Charles MorrowNSF NMGK8
Heath Capello
Net Thrower Web
•
Charles MorrowNSF NMGK8
Heath Capello
Sheet Web
Charles MorrowNSF NMGK8
Heath Capello
Questions?
Charles MorrowNSF NMGK8
Heath Capello
Sources•Dr. Gail Stratton, University of
Mississippi•Field Guide to the Southeastern States, National Audubon Society•Field Guide to North American Insects & Spiders, •National Audubon Society•Anonymous. World Wide Web: Arachnid Web Pages. •Alexandra Parsons. 1990. Eyewitness Jr.: Amazing Spiders. •J.L. Cloudsley-Thomson. 1973. Spiders and Scorpions. •Herbert W. Levi and Lorna R. Levi. Spiders and Their Kin. •Louise Martin. Funnel Web Spiders. •L.M. Milne. 1995. Field Guide to North American Insects and Spiders.•Bill Nye the Science Guy. Animal Locomotion. PBS.