Fig. 5.

Neighbour-joining consensus tree of partial 18S rRNA gene sequences of 12 samples of Morph1 (JN626268) and Morph2 (JN626269) found within Brown Band Disease and White Syndrome, illustrating slight (up to 0.5%) variation within each morphotype, but 1.3–1.8% variation between morphotypes over 549 bp. Number in brackets relates to number of identical sequences obtained for the given GenBank accession number from single cell isolates of each morph. Sequence alignment and tree construction were as described in Fig. 4. Insert histogram shows sequence mismatch frequencies within and between sequences of Morph1 and 2.