Phylogenetic and Transcriptomic Analysis of Chemosensory Receptors in a Pair of Divergent Ant Species Reveals Sex-Specific Signatures of Odor Coding
(A) A maximum-likelihood tree of hymenopteran Or genes estimated by using RAxML with Le-Gascuel (LG) model. Reliability of internal nodes was evaluated by 100 bootstrap replicates. Grey round dots indicate well-supported subfamilies (bootstrap value ≥80). Bootstrap values ≥70 are shown for relationships among subfamilies. Ors in different species are color-coded as following: N. vitripennis, black; A. mellifera, purple; H. saltator, blue; L. humile, yellow; P. barbatus, green; and C. floridanus, red. Subfamilies with rapid changes in gene copy numbers are highlighted in red. (B) Numbers of hymenopteran Or genes in well supported subfamilies.