Activity and space use by degus: A trade-off between thermal conditions and food availability?

Leonardo D. Bacigalupe, Enrico L. Rezende, G. J. Kenagy, Francisco Bozinovic

Resultado de la investigación: Contribución a una revistaArtículo

49 Citas (Scopus)

Resumen

We analyzed the influence of environmental temperature (open versus shaded habitat) and experimental food availability on surface activity of the degu (Octodon degus), a day-active herbivorous rodent that inhabits central Chile. We manipulated food availability and compared open and shaded study plots to determine the influence of thermal conditions on aboveground activity. Degus displayed a bimodal pattern of daily activity during relatively warmer thermal conditions in the austral autumn, whereas activity was unimodal during colder conditions in winter. However, they had a unimodal activity pattern under warm conditions in the shade when food availability was artificially enhanced in autumn. We observed more animals active in the plots where food was supplemented under all conditions. Our results illustrate spatial and temporal shifts in activity of degus involving a trade-off based on avoidance of exposure to heat and the search for food.

Idioma originalInglés
Páginas (desde-hasta)311-318
Número de páginas8
PublicaciónJournal of Mammalogy
Volumen84
N.º1
DOI
EstadoPublicada - feb 2003

Áreas temáticas de ASJC Scopus

  • Animales y zoología
  • Ecología
  • Genética
  • Ecología, evolución, comportamiento y sistemática
  • Conservación de la naturaleza y el paisaje

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