Table 3.

Accuracy (% correct) of classifying Anopheles gambiae mosquitoes as young (< 7 days) or old (≥ 7 days) when scanned fresh or after storing using different preservation techniques

Length of preservation time	RNAlater	Ethanol	Carnoy	Drierite	Silica gel	Refrigerated
Fresh	86.0	92.5	86.3	83.7	93.8	89.4
7–14 days	77.0	69.6	78.3	85.1	86.5	85.0
28–42 days	80.9	78.0	82.7	83.1	84.7	84.4
50–62 days	75.6	71.4	81.7	74.6	81.0	75.0