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Population Dynamics of Different Mosquito Species at Lahore College For Women University Campus, Lahore
86
recorded in the months of April, May and June. High
density of
Culex
is due to the presenceof big drains
and cesspits in the villages: these are the breeding
places chosen by
Cx. quinquefasciatus
(Murty et al.,
2002). We recorded the maximum density of
Cx.
quinquefasciatus
in February to May and the
minimum was recorded in the months of December
and January due to the low temperature. It was due the
factor of hygienic conditions as well because in the
Campus no water of rain was accumulated as in the
fields or the rural areas of Godaveri Districts of
Andhra Pradesh.
In Iraq a parasitological survey in 2002 identified no
malaria cases but an entomological survey found
Anopheles stephensi
in high densities. The highest
density was recorded in September and the lowest in
December and January.
A. stephensi
adults were
present during all months of the year except January,
whereas. The highest number is both
A. stephensi
. The
larval stages of
A. stephensi
disappeared in December
and January when the mean temperature was below 14
℃
. Two peaks of the
Anopheles
larvae were seen: the
first in June and the second in October (Ghoury et al.,
2006). In our study we found the heighest density of
Anopheles
spp. In the month of February where the
mean ambiant temperature was about 14.3
℃
. The
results are in accordance with the study performed by
Ghoury.
Anopheles stephensi
start building
populations by end March, reaching a peak in April
and May and thereafter start falling off rapidly till July.
It is found in moderate numbers from September to
November. In NWFP, Baluchistan this species is more
prominent from July to September (Country Report
Pakistan, 2003). The difference of population peaks of
mosquitoes even in Pakistan is due to regional
climatic changes, inadiquate sanitary conditions and
rapid urbanization.
3 Materials and Methods
3.1 Material required
Bamboo traps half filled with water, rearing trays,
dropper, convex lens, filter papers, paper cups and
microscope.
3.2 Methodology
The 50 bamboo traps half filled with tap water were
installed at LCWU campus. These traps were placed
on different rich breeding sites of the mosquitoes
because of being humid and shady. The sites were
coded as A, B, C, D, E. Every site consisted of 10
traps. Weekly reading was taken from these traps and
the samples were collected in paper cups carefully.
The samples were then taken to the laboratory for
identification, isolation and quantification of different
mosquito species.
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