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Table 1 Mean total activity time (minutes) of female mosquitoes spent in different behavioural modes over 60 min tests in the field hut

From: Host-seeking activity of a Tanzanian population of Anopheles arabiensis at an insecticide treated bed net

  Swooping Visiting Bouncing Resting Total
Untreated net 4.0 (2.8–5.7) 11.7 (6.9–19.8) 38.6 (19.5–76.4) 13.4 (7.6–23.5) 73.5 (42.6–126.8)
LLIN 4.9 (3.2–7.5) 8.7 (5.0–15.2) 5.3 (2.5–11.5)* 2.8 (1.7–4.8) 23.8 (14.7–38.5)*
  1. The four behavioural modes are defined as follows. Swooping: tracks that do not contact the bed net. Visiting: tracks where relatively long periods of flight are interspersed with infrequent net contacts; contacts characterized by sharp turns of 80° or more in trajectory; when multiple contacts occur, the minimum interval between them is 0.4. Bouncing: tracks where mosquito makes multiple rapid contacts with the bed net surface at intervals of under 0.4 s; includes short flight events between contacts, or when contact with the bed net surface is maintained but not static. Resting: tracks completely static for at least 0.75 s, or where the speed of mosquito movement is under 1.33 mm/s (equivalent to movement of up to 1 mm in the minimum resting time); constant contact with the bed net surface is assumed
  2. Table shows geometric mean times (minutes) with 95% confidence intervals, from 10 repeat tests per treatment and 10 mosquitoes per test. As multiple mosquitoes were active simultaneously, the total activity time may exceed 60 min
  3. * Indicate results where activity for a given behavioural mode was significantly different between net treatments (p < 0.05).  indicates that no significant effect of net treatment was found (p < 0.05). Where there is no symbol, testing was not performed (to avoid analysis of multiple non-independent variables, statistical tests were conducted only on swooping and bouncing mode and total activity data)