Individual growth rates in natural field vole, Microtus agrestis, populations exhibiting cyclic population dynamics

Sarah Janette Burthe, Xavier Lambin, Sandra Elizabeth Telfer, Alexander Douglas, Pablo Beldomenico, Andrew David Smith, Michael Begon

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Rodents that have multi-annual cycles of density are known to have flexible growth strategies, and the "Chitty effect", whereby adults in the high-density phase of the cycle exhibit larger average body mass than during the low phase, is a well-documented feature of cyclic populations. Despite this, there have been no studies that have repeatedly monitored individual vole growth over time from all phases of a density cycle, in order to evaluate whether such variation in body size is due to differences in juvenile growth rates, differences in growth periods, or differential survival of particularly large or small voles. This study compares growth trajectories from voles during the peak, increase and crash phases of the cycle in order to evaluate whether voles are exhibiting fast or slow growth strategies. We found that although voles reach highest asymptotic weights in the peak phase and lowest asymptotes during the crash, initial growth rates were not significantly different. This suggests that voles attain larger body size during the peak phase as a result of growing for longer.

Original languageEnglish
Pages (from-to)653-661
Number of pages9
JournalOecologia
Volume162
Issue number3
Early online date16 Nov 2009
DOIs
Publication statusPublished - Mar 2010

Keywords

  • chitty effect
  • juvenile growth
  • multi-annual density cycles
  • rodent
  • body size
  • life-history traits
  • body-size
  • evolution
  • ecology
  • Pennsylvanicus
  • environments
  • mechanisms
  • strategies
  • selection
  • lemmings
  • Chitty effect
  • Juvenile growth
  • Multi-annual density cycles
  • Rodent
  • Body size

Cite this

Individual growth rates in natural field vole, Microtus agrestis, populations exhibiting cyclic population dynamics. / Burthe, Sarah Janette; Lambin, Xavier; Telfer, Sandra Elizabeth; Douglas, Alexander; Beldomenico, Pablo; Smith, Andrew David; Begon, Michael.

In: Oecologia, Vol. 162, No. 3, 03.2010, p. 653-661.

Research output: Contribution to journalArticle

Burthe, Sarah Janette ; Lambin, Xavier ; Telfer, Sandra Elizabeth ; Douglas, Alexander ; Beldomenico, Pablo ; Smith, Andrew David ; Begon, Michael. / Individual growth rates in natural field vole, Microtus agrestis, populations exhibiting cyclic population dynamics. In: Oecologia. 2010 ; Vol. 162, No. 3. pp. 653-661.
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