Heath Capello Charles Morrow NSF NMGK8 PRESENTS. Heath Capello Charles Morrow NSF NMGK8 SPIDERS...

Charles MorrowNSF NMGK8

Heath Capello

PRESENTS


Heath Capello

SPIDERS

Charlotte’s Web

A Look at Mississippi Spiders

And their Webs


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Spider Facts

• Have two body parts: head and abdomen

• Have 8 legs and 8 eyes


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Spider Silk

•Make egg cocoons•A thin strand for lowering•Thick strand for web support•Sticky silk for trapping prey


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Spider Hunting

•Stalking•Ambushing•Trapping•Biting – venom has digestive juicesused to dissolve prey so that it can be sucked up into mouth


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Black Widow


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Black and Yellow Garden


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Carolina Wolf


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Crab-like SpinyOrb Weaver


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Daring Jumping


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Golden-Silk


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Venusta Orchard


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Purse-Web


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Brown Recluse


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PRESENTS


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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.


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Spider Silk


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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!


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The Orb Weaver Web


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Where does a spider usually build its Web?

• Any Suggestions?

• Corners of Buildings• Between plants,

(stems)• Between tree

branches

• HOW DOES THE SPIDER BEGIN?


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How Does a Spider Begin?

• Animation - Starting a Web


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Building a Web


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Do You See The Triangles?


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Object Recognition


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Why does the Spider Not Get Caught?

• Different Types of Silk

• Sticky or Not


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Let’s Review • Silk and Properties

• How not to get caught

• Line Segment

• Triangle

• Spirals


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Orb Weaver Web


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Other Types of Webs


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Single-Line Web


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Triangle Web


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Cobweb Weavers or Tangled Web


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Net Thrower Web

•


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Sheet Web


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Questions?


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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.

Heath Capello Charles Morrow NSF NMGK8 PRESENTS. Heath Capello Charles Morrow NSF NMGK8 SPIDERS...

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Transcript of Heath Capello Charles Morrow NSF NMGK8 PRESENTS. Heath Capello Charles Morrow NSF NMGK8 SPIDERS...