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Molecular Ecology (2006) 15, 13791391 doi: 10.1111/j.1365-294X.2005.02749.x 2006 Blackwell Publishing Ltd
 

Summary: Molecular Ecology (2006) 15, 1379­1391 doi: 10.1111/j.1365-294X.2005.02749.x
© 2006 Blackwell Publishing Ltd
Blackwell Publishing, Ltd.
A genetic similarity rule determines arthropod community
structure
R. K. BANGERT,* R. J. TUREK, B. REHILL,§ G. M. WIMP,*¶ J. A. SCHWEITZER, ** G. J. ALLAN,*
J. K. BAILEY,* G. D. MARTINSEN,* P. KEIM,* R. L. LINDROTH and T. G. WHITHAM*
*Department of Biological Sciences and the Merriam-Powell Center for Environmental Research, Northern Arizona University,
PO Box 5640, Flagstaff, AZ 86011, Department of Mathematics and Statistics, Northern Arizona University, Flagstaff, AZ 86011,
Department of Entomology, University of Wisconsin, Madison, WI 53706, **School of Forestry, Northern Arizona University,
Flagstaff, AZ 86011, USA
Abstract
We define a genetic similarity rule that predicts how genetic variation in a dominant plant
affects the structure of an arthropod community. This rule applies to hybridizing cottonwood
species where plant genetic variation determines plant­animal interactions and structures
a dependent community of leaf-modifying arthropods. Because the associated arthropod
community is expected to respond to important plant traits, we also tested whether plant
chemical composition is one potential intermediate link between plant genes and arthropod
community composition. Two lines of evidence support our genetic similarity rule. First,
in a common garden experiment we found that trees with similar genetic compositions had

  

Source: Allan, Gery - Department of Biological Sciences, Northern Arizona University
Lindroth, Rick - Department of Entomology, University of Wisconsin at Madison
Tennessee, University of - Department of Ecology and Evolutionary Biology, Genes to Ecosystems Lab

 

Collections: Biology and Medicine; Environmental Sciences and Ecology