The super-parasitic wasp, Aphidius ervi, attacks the pea aphid, Acyrthosiphon pisum. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

My colleagues and I (Tenhumberg et al. 2009) used a matrix population model of pea aphids to compare predicted trajectories of populations that started out with 100% adults (adults are the ...