1. Centre for Ecology and Evolution in Microbial Model Systems (EEMiS) Linnaeus University SE‐391 82 Kalmar Sweden
2. Department of Zoology University of Oxford South Parks Road Oxford OX1 3PS UK
3. Centre for Asthma and Respiratory Disease and Hunter Medical Research Institute University of Newcastle Newcastle NSW 2300 Australia
4. Department of Medical Sciences Uppsala University Uppsala Sweden
5. Department of Biology Lund University Ecology Building SE‐223 62 Lund Sweden