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Using Cholesky Decomposition to Explore Individual Differences in Longitudinal Relations between Reading Skills
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Population differences in behaviour are explained by shared within-population trait correlations.

Jonathan N Pruitt1, Susan E Riechert, Gabriel Iturralde

  • 1Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996-1610, USA. jpruitt6@utk.edu

Journal of Evolutionary Biology
|February 13, 2010
PubMed
Summary
This summary is machine-generated.

Behavioral syndromes, or personality, in spiders show consistent patterns across diverse populations. These correlated behaviors suggest they evolve together, constraining independent evolutionary change.

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Area of Science:

  • Behavioral Ecology
  • Evolutionary Biology
  • Animal Behavior

Background:

  • Behavioral syndromes, also termed 'personality', describe consistent correlations in behavioral traits across contexts.
  • These syndromes are hypothesized to act as evolutionary constraints, meaning changes in one trait may necessitate shifts in others.

Purpose of the Study:

  • To test if geographically distant populations of the spider Anelosimus studiosus share common behavioral syndromes.
  • To determine if population-level behavioral differences correlate similarly to within-population trait correlations.

Main Methods:

  • Comparative analysis of behavioral data from eighteen populations of Anelosimus studiosus.
  • Statistical examination of trait correlations within and between populations.

Main Results:

  • Similar behavioral syndromes were observed in populations separated by up to 36 degrees latitude.
  • Population differences in behavior were correlated in the same manner as within-population trait correlations, indicating divergence along common axes.
  • Population divergence mirrored within-population covariance structures.

Conclusions:

  • Behavioral syndromes in Anelosimus studiosus are conserved across significant geographic distances.
  • The constituent traits within these syndromes exhibit a lack of evolutionary independence, suggesting co-evolutionary constraints.