• The roles of competition and environmental heterogeneity in the maintenance of behavioral variation and covariation

      Dochtermann, Ned A.; Jenkins, Stephen H.; Swartz, Maryke J.; Hargett, Allison C. (2012)
      Many models of selection predict that populations will lose variation in traits that affect fitness. Nonetheless, phenotypic variation is commonly observed in natural populations. We tested the influences of competition and spatial heterogeneity on behavioral variation within and among populations of Merriam's kangaroo rats (Dipodomys merriami) and tested for the differential expression of trait correlations....