Journal of Mosquito Research, 2013, Vol.3, No.3, 14
-
20
ISSN 1927-646X
17
Table 5 Hour wise number and percent of day-biting
Ar. subalbatus
during August 2009 to July 2010 in tribal and non-tribal areas of
Bankura district, West Bengal, India
Tribal
Non-tribal
Indoor
Outdoor
Total
Indoor
Outdoor
Total
Hours
No.
%
No.
%
No.
%
No.
%
No.
%
No.
%
0600
~0700
3
21.43
3
16.67 6
18.75
77
7.51 187
11.75
264 10.09
0700
~0800
1
7.14
2
11.11 3
9.38
68
6.63 86
5.40
154
5.88
0800
~0900
1
7.14
1
5.56 2
6.25
72
7.02 79
4.96
151
5.77
0900
~1000
1
7.14
1
5.56 2
6.25
60
5.85 45
2.83
105
4.01
1 000
~1100
0
0.00
0
0.00 0
0.00
40
3.90 43
2.70
83
3.17
1100
~1200
0
0.00
0
0.00 0
0.00
46
4.49 24
1.51
70
2.67
1200
~1300
0
0.00
0
0.00 0
0.00
39
3.80 28
1.76
67
2.56
1300
~1400
0
0.00
0
0.00 0
0.00
37
3.61 47
2.95
84
3.21
1400
~1500
0
0.00
0
0.00 0
0.00
61
5.95 76
4.77
137
5.24
1500
~1600
1
7.14
2
11.11 3
9.38
75
7.32 113
7.10
188
7.18
1600
~1700
2
14.29
3
16.67 5
15.63
185 18.05 180
11.31
365 13.95
1700
~1800
5
35.71
6
33.33 11
34.38
265 25.85 684
42.96
949 36.26
Total
14 100.00 18
100.00 32
100.00
1025 100.00 1592
100.00
2617 100.00
Table 6 Hour wise number and percent of night-biting
Ar. subalbatus
during August 2009 to July 2010 in tribal and non-tribal areas
of Bankura district, West Bengal, India
Tribal
Non-tribal
Indoor
Outdoor
Total
Indoor
Outdoor
Total
Hours
No.
%
No.
%
No.
%
No.
%
No.
%
No.
%
1800
~1900
1
50.00 0
0.00
1
20.00
47
21.66
63
18.37
110 19.64
1900
~2000
0
0.00 1
33.33
1
20.00
31
14.29
42
12.24
73
13.04
2000
~2100
0
0.00 0
0.00
0
0.00
23
10.60
32
9.33
55
9.82
2100
~2200
0
0.00 0
0.00
0
0.00
11
5.07
19
5.54
30
5.36
2200
~2300
0
0.00 0
0.00
0
0.00
12
5.53
24
7.00
36
6.43
2300
~2400
0
0.00 0
0.00
0
0.00
9
4.15
19
5.54
28
5.00
0000
~0100
0
0.00 0
0.00
0
0.00
8
3.69
18
5.25
26
4.64
0100
~0200
0
0.00 0
0.00
0
0.00
6
2.76
16
4.66
22
3.93
0200
~0300
0
0.00 0
0.00
0
0.00
10
4.61
19
5.54
29
5.18
0300
~0400
0
0.00 1
33.33
1
20.00
11
5.07
22
6.41
33
5.89
0400
~0500
1
50.00 0
0.00
1
20.00
18
8.29
27
7.87
45
8.04
0500
~0600
0
0.00 1
33.33
1
20.00
31
14.29
42
12.24
73
13.04
Total
2
100.00 3
100.00
5
100.00
217 100.00 343
100.00
560 100.00
When the day (0600hrs to 1800hrs) was divided into 4
quadrants, the maximum numbers of
Ar. subalbatus
were caught in the last quadrant (59.38% in tribal area
and 57.39% in non-tribal area), whereas in 1
st
, 2
nd
and
3
rd
quadrants, only 34.38%, 6.25% and 0.0%
mosquitoes were caught in tribal area and 21.74%,
9.86%
and 11.0% in non-tribal area (Table 5). During
night (1800hrs to 0600hrs) the figures in 1
st
, 2
nd
, 3
rd
and 4
th
quadrants were 40.0%, 0.0%, 0.0% and 60.0%
respectively in tribal area and 42.50%, 16.79%,
13.75%
and 26.96% respectively in non-tribal area
(
Table 6). The biting peak of
Ar. subalbatus
was
34.38%
and 36.26% in tribal and non-tribal areas
respectively in between 1700hrs and 1800hrs.
Comparing the man-landing collection of 24 hour
from all the micro-habitats, highest biting activity of
Ar. subalbatus
was found during 4
th
quadrants of day
time (Figure 3).
There was no incidence of any kind of human parasite