Table 2. Means and standard errors of the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R 0), mean generation time (T ) of R. ferrugineus at six constant temperatures.
Population parameters | Temperature (°C) |
|||||
---|---|---|---|---|---|---|
21 | 24 | 27 | 30 | 33 | 36 | |
r (d−1) | 0.0050 ± 0.0013 c | 0.0083 ± 0.0015 bc | 0.0152 ± 0.0015 a | 0.0128 ± 0.0021 ab | 0.0109 ± 0.0030 abc | 0.0027 ± 0.0037 c |
λ (d−1) | 1.0050 ± 0.0013 c | 1.0084 ± 0.0016 bc | 1.0153 ± 0.0015 a | 1.0129 ± 0.0021 ab | 1.0109 ± 0.0031 abc | 1.0027 ± 0.0037 c |
R0 (offspring/individual) | 4.51 ± 1.52 bc | 8.41 ± 2.84 ab | 16.67 ± 4.02 a | 9.93 ± 3.08 ab | 6.49 ± 2.56 bc | 1.69 ± 0.76 c |
T (d) | 287.90 ± 5.32 a | 248.99 ± 9.89 b | 183.30 ± 6.76 c | 176.16 ± 9.62 c | 164.08 ± 9.85 cd | 144.89 ± 7.57 d |
Means in the same row followed by the same letter are not significantly different. The SEs were estimated using 100,000 bootstraps and compared using a paired bootstrap test based on the CI of difference.