Fig. 2
From: Expanded olfactory system in ray-finned fishes capable of terrestrial exploration
OLF genes transcriptomic abundances affected by gene cluster dynamics. a Relative transcriptomic abundance of each OLF family in the olfactory organ of eight sequenced species. Species in the plot are, from top to bottom: Anguilla Anguilla: 669 genes, Pygocentrus nattereri: 530 genes, Electrophorus electricus: 332 genes, Thymallus thymallus: 85 genes, Salmo trutta: 183 genes, Thalassophryne amazonica, 141 genes, Anabas testudineus: 615 genes and Mastacembelus armatus: 608 genes. Expression values correspond to the mean of two biological replicates in each species. b Relative repertoire size and its transcriptomic abundance is shown for each family from the eight described species. Gray line indicates a hypothetical perfect correspondence. c Proportion of individual receptors accumulating half of the total OLF gene expression is indicated with dashed lines for each species. Values range from around 15% in the brown trout (S. trutta) to approximately 20% in the climbing perch (A. testudineus). d Relative gene expression levels of individual receptors in three selected species displayed in genomic order within clusters. Gene families are coloured as in panels a and b. Median value is indicated by a dashed line. OLF gene clusters are highlighted in white and light grey alternatively. On top, heatmaps showing the percentage of global accumulated OLF expression (AcEx) and average per gene expression (AvEx) in each gene cluster