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The Evolutionary Journey of Crayfish and Cockroach

Explore the intriguing characteristics and evolutionary journey of crayfish and cockroach, from chelipeds for defense to regenerative abilities. Discover similarities and differences in their family trees and where they fit in the ecosystem.

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The Evolutionary Journey of Crayfish and Cockroach

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  1. The Evolutionary Journey of Crayfish and Cockroach By Michael Smith and Fawn O’Brien

  2. Interesting Crayfish Characteristics • Chelipeds – big pinchers for defense • Maxillipeds – 3 sets of feeding claws • Swimmerets – assist in swimming and females use them to carry eggs under their body

  3. Interesting Crayfish Characteristics • Ability to molt • Ability to regenerate – regrow limbs • Eye stalks – eyes can swivel on stalks

  4. How Water Flea Crayfish Cockroach Brine Shrimp Shrimp Grasshopper Butterfly Fly Makes larvae Decapods--10 walking legs Silverfish Crustacea-crusty shell maxilipeds, Chilipeds, swimmerets Cockroach & Crayfish Family Tree Centipedes Hexapoda--6 legs compound eyes Spiders Land Arthropods-jointed legs Aquatic

  5. Where do we fit? Crayfish Cockroach Human Paramecium Bean

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