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Ground squirrels use an infrared signal to deter rattlesnake predation Aaron S. Rundus, Donald H. Owings, Sanjay S. Joshi, Erin Chinn, and Nicolas Giannini.

Published byFelicity Briggs Modified over 9 years ago

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Presentation on theme: "Ground squirrels use an infrared signal to deter rattlesnake predation Aaron S. Rundus, Donald H. Owings, Sanjay S. Joshi, Erin Chinn, and Nicolas Giannini."— Presentation transcript:

1 Ground squirrels use an infrared signal to deter rattlesnake predation Aaron S. Rundus, Donald H. Owings, Sanjay S. Joshi, Erin Chinn, and Nicolas Giannini Squirrels versus Snakes

2 Introduction: Mommy ground squirrels use different tactics to deal with different predators Birds, mammals Snakes Vocal displaysVisual displays: “Tail flagging” Richard G. Coss

3 Introduction: tail flagging is used for rattlesnakes and gopher snakes RattlesnakeGopher snake

4 Hypotheses and Predictions H1: Squirrels use an infrared component to tail flagging when confronting rattlesnakes P1: infrared t.f. with rattlesnakes but not with gopher snakes H2: Tail flagging + infrared helps to prevent rattlesnake predatory behavior P1: rattlesnakes will display more defensive behavior (coiling, rattling) with infrared t.f. compared to normal t.f.

5 Methods + heated tail - heated tail rattlesnake gopher snake

6 Results

7

8 Hypotheses and Predictions H1: Squirrels use an infrared component to tail flagging when confronting rattlesnakes P1: infrared t.f. with rattlesnakes but not with gopher snakes H2: Tail flagging + infrared helps to prevent rattlesnake predatory behavior P1: rattlesnakes will display more defensive behavior (coiling, rattling) with infrared t.f. compared to normal t.f.

9 Future directions Squirrel power: Do other squirrel behaviors help the effectiveness of tail flagging? (ex: substrate throwing) Using the correct lingo: Are there more examples of animals that use infrared signals to “talk” with other species?

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