Claw Size and Competition: Behaviors of Male Fiddler Crabs

PBS Learning Media
Contributed By
PBS Learning Media
Resource Type
Classroom Material
Keywords
Nature WNET Nat16 crab fiddler crab crustacean animal behavior animal mating competition sexual selection zoology Uca optical illusions males claw attraction Ebbinghaus illusion
Subjects
Science Anatomy and Physiology
Grade Levels
Grade 9 Grade 10 Grade 11 Grade 12
Related Resources

Claw Size and Competition: Behaviors of Male Fiddler Crabs

Learn about competitive behaviors in fiddler crabs, and see how claw size seems to shape where crabs choose to burrow and who to call a friend or foe in this resource from the series NATURE.

Additional support materials are available, including discussion questions, vocabulary, and activities to help expand students’ knowledge of animal behavior and natural selection.
Publisher
PBS Learning Media

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