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Cricket Behavior Experiment. Variables? Control? Any way to improve the design?. You have one of these variables:. Agnostic behavior (aggressive) Sexual ( mating,male /female) Phototaxis (light/dark) Stimulus kinesis (food, hot/cold, terrain surfaces, etc.)
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You have one of these variables: • Agnostic behavior (aggressive) • Sexual (mating,male/female) • Phototaxis (light/dark) • Stimulus kinesis (food, hot/cold, terrain surfaces, etc.) • Courtship (male and female interaction) • Territorial (protecting their space) • Cricket Fighting Video • Another fighting video
Research the Variable • Go the Sheldon Bioconnection, Chapt. 1, Cricket Links • Google that behavior • Google cricket behavior • Google designing an experiment • Video of Cricket Behavior
How do you go from observations to writing a problem statement? • Your problem statement must be measureable and start out, “What is the effect of…?” • EXAMPLE: What do male crickets do when a female comes near it?BETTER: What is the effect of movement of introducing male crickets in a tank of only female crickets?
Problem Statement to Hypothesis • If the (dependent variable) is related to the (independent variable),the prediction. • EXAMPLE: If the movement of female crickets is related to the introduction of male crickets, then more female crickets will move toward the male when they enter the tank.
Make measureable observations • EXAMPLE: What constitutes “courtship?” • Touching • Moving toward • Chirping • Mounting • Biting • Cricket Mating Video
You’ll need numbers for data: • Count how many crickets are in an area per minute. • Count how many crickets touched another cricket.
How many variables here? What is the independent variable? Dependent?
What do you think of putting ice and warm water in bags UNDER the tank? (Why better than in the tank?)