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. 2011 Apr 29;2(2):173–185. doi: 10.3390/insects2020173

Table 3.

Mean (± 95% CI) duration of each life stage (days) for two pyrethroid-resistant (KR and RR) and one susceptible strain of the common bed bug, Cimex lectularius.

Life Stage Bed Bug Strain (n = Life Table Cohort Size)

Harlan (HS) (n = 175) Kramer (KR) (n = 198) Richmond (RR) (n = 192)
Egg 5.41 (± 0.08) a 5.84 (±0.11) b 6.33 (± 0.09) c
1st instar (N1) 7.82 (± 0.21) a 7.95 (± 0.24) a 4.46 (±0.11) b
2nd instar (N2) 8.20 (± 0.27) a 7.80 (±0.31) a 6.02 (±0.12) b
3rd instar (N3) 8.02 (± 0.29) a 7.02 (± 0.34) b 5.62 (±0.17) c
4th instar (N4) 7.63 (± 0.29) a 7.61 (±0.33) a 5.66 (±0.19) b
5th instar (N5) 3.28 (± 0.22) a 4.12 (±0.24) b 6.73 (±0.19) c
Egg – Adult 40.37 (±0.19) a 40.35 (±0.19) a 34.82 (±0.12) b
*

Notes: Means followed by the same letter in each row are not significantly different (P > 0.05).