image: A predatory ladybug (Hippodamia variegate) feeding upon an aphid (Aphis nerii) on milkweed (Asclepias syriaca). This image relates to an article that appeared in the March 26, 2010, issue of Science, published by AAAS. The study, by Dr. Kailen Mooney of the University of California, Irvine in Irvine, Calif., and colleagues, was titled, "Evolutionary Tradeoffs in Plants Mediate the Strength of Trophic Cascades." view more
Credit: Image courtesy of Pavlos Skenteridis, Bio-insecta