Fig. 2

The dynamic and tissue-specific expression of the BgAOX gene in different-sized B. glabrata snails during growth. A The dynamic expression profile of BgAOX in the whole soft body of snails. The x-axis represents the size (mm in diameter) of snails, and the lower number means the age of corresponding-sized snails, from 14 days (d) to 6 months (m). The y-axis represents the fold change of BgAOX mRNA level in snails. *(p < 0.05) or ns (no significant difference) means comparison between the corresponding sized snail and 5.5–7.0 mm snail. Comparison between specific groups is marked with the beginning and ending points on the underlines. B The dynamic expression of BgAOX mRNA in specific tissues, including the head-foot, liver, and ovotestis of 6–24 mm snails. *(p < 0.05), **(p < 0.01), ***(p < 0.001) or ns means BgAOX mRNA amount comparison between the corresponding sized snail and 6.0 mm snail, comparison between specific groups is marked with the beginning and ending points on underlines. C The comparison of BgAOX mRNA amount among the head-foot, liver, and ovotestis in snails of the same size