Table 5 Vectorial capacity (VC) of Anopheles labranchiae in the rice fields of Principina (Grosseto, Italy), 2005-2006
Parameters considered | Potential transmission season | |||||
|---|---|---|---|---|---|---|
Mid June | Mid July | Mid August | ||||
2005 | 2006 | 2005 | 2006 | 2005 | 2006 | |
Average Temperature (°C) | 25.1 | 23.6 | 26.4 | 26.5 | 23.7 | 23.0 |
Average Relative Humidity (%) | 50 | 60 | 48 | 60 | 58 | 68 |
Length of gonotrophic cycle (n. days) | 3.0 | 3.5 | 2.5 | 2.5 | 3.5 | 3.5 |
P. falciparum sporogonic cycle (n) Pf | 11 | 15 | 12 | 12 | 15 | 16 |
P. vivax sporogonic cycle (n) Pv | 10 | 12 | 9 | 9 | 12 | 13 |
Human Blood index (HBI) | 0.016 | |||||
Human biting rate (ma) | 15 | 12 | 24 | 45 | 6 | 8 |
Parity rate % (P) | 29.6 | 10.0 | 66.7 | 46.7 | 75.0 | 69.6 |
Vector daily survival probability (p) | 0.666 | 0.518 | 0.85 | 0.74 | 0.92 | 0.696 |
Expectancy of infective life (n. days) (pn) Pf | 0.0156 | 0.00005 | 0.1428 | 0.0258 | 0.291 | 0.190 |
Expectancy of infective life (n. days) (pn) Pv | 0.0173 | 0.00037 | 0.2323 | 0.064 | 0.373 | 0.259 |
Expectancy of infective life (1/-log e p) | 2.466 | 1.52 | 6.166 | 3.28 | 12.16 | 9.644 |
Longevity factor (pn/-log e p) Pf | 0.0285 | 0.00008 | 0.8805 | 0.0845 | 3.5457 | 1.8356 |
Longevity factor (pn/-log e p) Pv | 0.043 | 0.00057 | 1.432 | 0.211 | 4.537 | 2.505 |
VC P. falciparum | 0.0023 | 0.0000043 | 0.135 | 0.0240 | 0.097 | 0.067 |
VC P. vivax | 0.0034 | 0.000031 | 0.220 | 0.061 | 0.124 | 0.091 |