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Table 1. The oocyst infection rates and oocyst load in mosquito groups of various age categories. Data shown are per individual gametocyte carrier used in the infection experiments. Numbers in parenthesis represent proportion of infected mosquitoes per infection experiments.
Gametocyte
Oocyst infection rate
Oocyst load
Carrier
density
Macros†
1–3days
4–7days
8–11days
1–3days
4–7days
8–11days
1
16
15
7.1 (5/70)
10.0 (1/10)
0.0 (0/9)
1.4
1
0
2
32
31
2.5 (1/40)
7.7 (2/26)
0.0 (0/6)
1
1
0
3
16
15
0.0 (0/21)
0.0 (0/8)
6.3 (1/16)
0
0
1
4
96
95
5.0 (1/20)
5.3 (1/19)
0.0 (0/9)
1
1
0
5
64
63
9.3 (4/43)
8.3 (2/24)
6.3 (1/16)
2.5
1
4
6
80
79
0.0 (0/44)
9.7 (3/31)
11.1 (1/9)
0
1
1
7
48
47
3.1 (2/64)
0.0 (0/17)
12.5 (1/8)
1.5
0
2
8
16
15
0.0 (0/19)
0.0 (0/7)
0.0 (0/33)
0
0
0
9
16
15
0.0 (0/24)
6.7 (1/15)
0.0 (0/7)
0
1
0
10
16
15
8.7 (6/69)
3.6 (1/28)
0.0 (0/24)
1.3
1
0
11
32
31
2.9 (1/34)
6.7 (3/45)
12.5 (1/8)
1
1
1
12
16
15
0.0 (0/13)
6.7 (1/15)
0.0 (0/1)
0
1
0
13
16
15
3.9 (1/26)
66.7 (2/3)
7.1 (1/14)
1
1
1
14
16
15
ND
11.8 (2/17)
ND
ND
1
ND
35.2
*4.7 (20/429)
*6.4 (14/223)
*4.5 (5/112)
1.4 ± 0.2
1.0 ± 0.0
1.8 ± 0.6
†The macrogametocyte (=macros) density ingested by the mosquitoes was estimated by multiplying the mean blood meal volume of membrane fed mosquitoes by the mean number of macrogametocytes per ml of blood as described by Okech et al. (2004).
*Represents the overall oocyst infection rates computed by the total number of positive mosquitoes divided by the total number of mosquitoes dissected.
ND–Not done.
The average of the mean number of oocysts on the infected mosquito midguts ± standard error of the mean (SEM).
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