Limited perceptual range and anemotaxis in marsh rice rats Oryzomys palustris

Robert L. Schooley, Lyn C. Branch

Research output: Contribution to journalArticlepeer-review

Abstract

Dispersal among suitable habitat patches could be crucial to the regional persistence of wetland species. Dispersal success of animals will depend, in part, on the distance from which they can detect suitable habitat (ie, perceptual range). We investigated the perceptual range of marsh rice rats Oryzomys palustris Harlan, 1837 during the wet season in a region of central Florida characterized by small, isolated depression marshes. O. palustris had a limited perceptual range (< 10 m) indicating that individuals moving through unfamiliar habitat have restricted information from which to make movement decisions. O. palustris displayed anemotaxis during our experiment; individuals generally moved either upwind or downwind but rarely crosswind. This anemotaxis might reflect use of wind by rice rats to maintain a straight course while searching for new habitat located beyond their perceptual range.

Original languageEnglish (US)
Pages (from-to)59-66
Number of pages8
JournalActa Theriologica
Volume50
Issue number1
DOIs
StatePublished - Mar 2005
Externally publishedYes

Keywords

  • Anemotaxis
  • Oryzomys palustris
  • Perceptual range
  • Search behaviour
  • Wind-biased

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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