Gustatory receptor mRNA levels are not equal in every body part in both newly-emerged and forager honeybees.

<p>All expression levels are relative to the expression of the reference gene RP49 (RPL32) and are normalised to AmGr1 in the forager brain. <b>A.</b> Expression levels of the candidate sugar receptors (AmGr1 and AmGr2) and fructose receptor (AmGr3) genes across the un-manipulated forager (≈2–3 wk old) and newly emerged honeybee (≈24 h old) anatomy. <b>B.</b> Expression levels of the candidate bitter receptors in forager and newly emerged bees (NA represents unavailable data.). <b>C.</b> Expression levels of the unknown and potentially <i>Apis</i>-specific receptor genes in forager and newly-emerged bees. Note: AmGr9 mRNA expression levels were detected in all tissue types in both groups however levels were too low to include reliable expression values. Cells are shaded to indicate level of expression. N^{soft tissue}: 20 individual tissues. N^{hard tissue}: 75–150 individual tissues.