Fig. 3
From: Caste- and environment-associated differential expression of olfactory receptors in pest ants
Overall Camponotus floridanus transcription profiles are a product of both caste and environment. (A) PCA of all expressed genes from our C. floridanus samples. The first principal component (PC1) accounts for 43% of the observed variance and separates samples by Major (red) and Minor (blue) castes (indicated by Condition). The second principal component (PC2) accounts for 24% of the observed variance and generally separates samples into lab-reared (circles) and wild (triangles and squares) environmental origins (indicated by Type). However, there is also visible separation between Wild Space A (triangles) and Wild Space B (squares), indicating that transcription profiles differ even between ants of different wild environments. (B) Similar to (A), except this is a PCA of only Or genes (rather than all expressed genes, as in (A)) from our C. floridanus samples. There is still separation by caste (PC1, explaining 71% of observed variance), and some separation between lab-reared and wild-originating samples (PC2, explaining 8% of observed variance). However, the two wild spaces now cluster together, rather than having the separation observed in (A), indicating that Or genes are not the primary genes responsible for the wild environmental separation observed in (A).
