Fig. 3
From: The diversity of opsins in Lake Baikal amphipods (Amphipoda: Gammaridae)
Expression levels of LWS and MWS opsins in Gammaridae estimated by the alignment of raw sequencing reads of selected species to the nucleotide sequences of one MWS and two LWS opsins found in the transcriptome of G. pulex. European = European freshwater species (G. pulex, G. fossarum, and G. wautieri). Boxplots are violet-coloured if the median was positive and black-coloured if it was equal to zero. RPM, reads per million