Arthropod-Plant Interactions

, Volume 5, Issue 1, pp 59–69

Similar responses of insect herbivores to leaf fluctuating asymmetry

Original Paper


Fluctuating asymmetry (FA) represents small, random variation from symmetry and it has been used as an indicator of plant quality and susceptibility to herbivory. In this study, the effects of FA on the responses of distinct herbivore species belonging to several guilds were examined along an environmental gradient in south Florida. This approach was chosen because it relies on a multi-species approach to the study of fluctuating asymmetry and patterns of herbivory between and within plants along an environmental gradient of salinity and plant stress. To examine differences in FA between and within plant communities, seven plant species were investigated. Four of these plants were coastal species and three species occurred in upland communities. Levels of FA were assessed before herbivory and plants were followed for the whole herbivory season in 2006. Coastal plants exhibited significantly higher salt concentration, higher percentage of asymmetric leaves and higher asymmetry levels than upland plants. Herbivore abundance varied widely amongst the seven species studied, but quantitative syntheses of our results indicated significant and positive responses of insect herbivores to leaf asymmetry: insects were 25.11% more abundant on more asymmetric plants and stronger effects of asymmetry were observed for leaf miners compared to gall-formers. As demonstrated by other recent studies, FA might be used as a reliable stress indicator, leading to similar responses of insect herbivores to variation in leaf symmetry.


Fluctuating asymmetry Plant stress Leaf miners Gall-formers Herbivory Coastal-upland comparisons 

Supplementary material

11829_2010_9116_MOESM1_ESM.doc (394 kb)
Supplementary material 1 (DOC 394 kb)

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Department of Bioengineering, Ecosystem Bioengineering Building, Campus Tancredo NevesUniversidade Federal de São João Del ReiSão João Del ReiBrazil
  2. 2.Department of Biology SCA 110University of South FloridaTampaUSA

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