Fig. 2

Haemocyte counts in the haemolymph of young (grey lines) and old (blue lines) mosquito cohorts across the three different time points since emergence in Block 1 (a, b, c) and Block 2 (d, e, f) of the experiment. Half of the mosquitoes in the old cohort were blood fed on Day 7 (see Fig. 1). Blood-fed females are represented by a dashed line, unfed females by a full line (when dashed and full lines overlap only the latter is shown). Total haemocytes (a, d) are the sum of the total number of granulocytes (b, e) and oenocytoids (c, f). Due to a problem with an anticoagulant solution, in Block 2 only the haemocytes of old-unfed and old-fed mosquitoes could be quantified