Zimmermann, J, Wentrup, C, Sadowski, M, Blazejak, A, Gruber-Vodicka, HR, Kleiner, M, Ott, JA, Cronholm, B, De Wit, P, Erséus, C and Dubilier, N (2016) Closely coupled evolutionary history of ecto- and endosymbionts from two distantly related animal phyla. Molecular Ecology, 25(13). 3203-3223. doi:10.1111/mec.13554