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The response of social and non-social rodents to owl attack

  • Chen Rabi
  • Pazit Zadicario
  • Yael Mazon
  • Naama Wagner
  • David Eilam
Original Article

Abstract

Studies with individual rodents have revealed that they display protean (unpredictable) behavior when attacked by an owl. Other studies have revealed that voles in groups reduce behavioral variability a short time after owl attack, as if adopting the behavior of the higher-mass and perhaps older and more experienced, individuals. Here, we tested groups of rodents under owl attack in order to track the behavior of individuals within the group and compare between the behaviors of social and non-social species. We found differential behavior between species, between groups of the same species, among individuals in the same group, and among the various phases of the owl attack. We also found that upon being exposed to an owl, social rodents tended to huddle together whereas solitary rodents tended to scatter across the available space. Other non-social but perhaps not necessarily solitary rodent species displayed a mixed spacing, with some huddling and some scattering. The findings of the present study shed light on the defensive dynamics of small groups of social and non-social rodent species when they were under owl attack.

Significance statement

Freezing and fleeing are defensive responses that span the animal kingdom, and rodents display various combinations of these in order to prevent predators from predicting their response. Groups of six voles or six spiny mice that were attacked by a barn owl differentially displayed these responses during various phases of the owl attack. Responses also varied among individuals of the same group and among different groups. Finally, we show that when exposed to an owl and displayed freeze response, individuals of social species tended to huddle together, whereas individuals of solitary species scattered over the arena.

Keywords

Freezing Fleeing Protean behavior Anti-predator behavior Defensive behavior 

Notes

Acknowledgements

We are grateful to Naomi Paz for language editing, and the anonymous reviewers for their thoughtful comments.

Compliance with ethical standards

Ethical approval

All procedures performed in studies involving animals were in accordance with the ethical standards of the Institutional Committee for Animal Experimentation at Tel-Aviv University (permit no. L-15-011).

Conflict of interest

The authors declare that they have no conflict of interest.

Data availability

The datasets generated during the current study are available with no restriction, on request from the corresponding author.

Supplementary material

265_2017_2359_MOESM1_ESM.mp4 (2.2 mb)
ESM 1 (MP4 2213 kb).

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Chen Rabi
    • 1
  • Pazit Zadicario
    • 1
  • Yael Mazon
    • 1
  • Naama Wagner
    • 1
  • David Eilam
    • 1
  1. 1.School of ZoologyTel-Aviv UniversityRamat-AvivIsrael

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