Open-cell parasitism shapes maternal investment patterns in the Red Mason bee Osmia rufa Reference:Seidelmann, K., 2006. Open-cell parasitism shapes maternal investment patterns in the Red Mason bee Osmia rufa. Behavioral Ecology, 17(5), 839-848.URL:https://pdfs.semanticscholar.org/e674/790b3a95dea2c45898313576c2c3a383a1b2.pdf