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The cost of dispersal: predation as a function of movement and site familiarity in ruffed grouse

Author

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  • James M. Yoder
  • Elizabeth A. Marschall
  • David A. Swanson

Abstract

Ecologists often assume that dispersing individuals experience increased predation risk owing to increased exposure to predators while moving. To test the hypothesis that predation risk is a function of movement distance or rate of movement, we used radio-telemetry data collected from 193 ruffed grouse (Bonasa umbellus) during 1996--1999 in southeastern Ohio. Cox's proportional hazards model was used to examine whether the risk of predation was affected by the rate of movement and site familiarity. We found evidence indicating that increased movement rates may increase the risk of predation for adult birds but not juveniles. We also found juvenile and adult birds inhabiting unfamiliar space were consistently at a much higher risk of predation (three to 7.5 times greater) than those in familiar space. Our results indicate that although movement itself may have some effect on the risk of being preyed upon, moving through unfamiliar space has a much greater effect on risk for ruffed grouse. This supports the hypothesis that increased predation risk may be an important cost of dispersal for birds. Copyright 2004.

Suggested Citation

  • James M. Yoder & Elizabeth A. Marschall & David A. Swanson, 2004. "The cost of dispersal: predation as a function of movement and site familiarity in ruffed grouse," Behavioral Ecology, International Society for Behavioral Ecology, vol. 15(3), pages 469-476, May.
    • Handle: RePEc:oup:beheco:v:15:y:2004:i:3:p:469-476
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    File URL: http://hdl.handle.net/10.1093/beheco/arh037
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    Citations

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    Cited by:

    1. Allison S. Cox & Dylan C. Kesler, 2012. "Prospecting behavior and the influenceof forest cover on natal dispersal in aresident bird," Behavioral Ecology, International Society for Behavioral Ecology, vol. 23(5), pages 1068-1077.
    2. Tiffany C Armenta & Steve W Cole & Daniel H Geschwind & Daniel T Blumstein & Robert K Wayne, 2019. "Gene expression shifts in yellow-bellied marmots prior to natal dispersal," Behavioral Ecology, International Society for Behavioral Ecology, vol. 30(2), pages 267-277.
    3. Reyes, Elijah & Cunliffe, Finnerty & M’Gonigle, Leithen K., 2023. "Evolutionary dynamics of dispersal and local adaptation in multi-resource landscapes," Theoretical Population Biology, Elsevier, vol. 153(C), pages 102-110.
    4. Darcy R Visscher & Evelyn H Merrill, 2018. "Functional connectivity in ruminants: A generalized state-dependent modelling approach," PLOS ONE, Public Library of Science, vol. 13(6), pages 1-22, June.
    5. Yurek, Simeon & DeAngelis, Donald L. & Trexler, Joel C. & Jopp, Fred & Donalson, Douglas D., 2013. "Simulating mechanisms for dispersal, production and stranding of small forage fish in temporary wetland habitats," Ecological Modelling, Elsevier, vol. 250(C), pages 391-401.

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