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Intrinsic and Extrinsic Factors Influence Expression of Defensive Behavior in Plains Hog-Nosed Snakes


Read this paper and answer the given questions:

Durso, A.M. & Mullin, S.J. (2013). Intrinsic and extrinsic factors influence expression of defensive behavior in plains hog-nosed snakes (Heterodon nasicus). Ethology, 120(2), 140- 148. doi: 10.1111/eth.12188

  • What anti-predator behaviour was examined in this study?
  • What specific hypotheses were tested by the authors?
  • What specific predictions were tested regarding this behaviour?
  • What conclusion(s) did the authors make about their predictions?
  • How did the anti-predator behaviour of adult female H. nasicus differ from juvenile and adult males? List one possible explanation for this difference. What statistical evidence from the paper supports this explanation?
  • What was the effect of microhabitat on the observed anti-predator behaviour? Describe one possible confounding variable with this finding, as mentioned by the authors.

Summary: This question belongs to ethology and discusses about an article on animal behavior.  

Total word count: 370


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