Funnel plots of differential expression estimates and 95% confidence interval limits for Apis mellifera transcripts BB170018A20B07 (2A), BB170024B10C11 (2B), BB170024B20H07 (2C), and BB170004B20H08 (2D), by individual-study, study-level (Study), non-standardized study-level (N_Study), and sample-level (Sample) meta-analyses. Estimates and 95% confidence intervals for each analysis are represented by a square and a horizontal line, respectively. Study denotes study-level meta-analysis of standardized estimates, N_Study denotes study-level meta-analysis of non-standardized estimates, Sample denotes sample-level meta-analysis. AC: Apis cerana bees raised on Apis cerana colonies; AD: Apis dorsata bees raised on Apis dorsata colonies; AF: Apis florea bees raised on Apis florea colonies; AM: Apis mellifera bees raised on an Apis mellifera colony, LL: Apis mellifera ligustica bees raised on an Apis mellifera ligustica colony; LM: Apis mellifera ligustica bees raised on an Apis mellifera mellifera colony; ML: Apis mellifera mellifera bees raised on an Apis mellifera ligustica colony; MM: Apis mellifera mellifera bees raised on an Apis mellifera mellifera colony The size of the square denoting the estimate corresponds to the number of observations in the study (AC, AD, AF n = 24; AM n = 22; LL, LM, ML, MM n = 12; study-level (Study) meta-analysis n = 8; sample-level (Sample) meta-analysis n = 142). Analyses detecting significant (P-value < 1 × 10-3) differential expression between forager and one-day-old honey bees are denoted by an asterisk.