Abstract
The study included collecting monthly samples of the aquatic stage of
Anopheles mosquitoes for the period from January 2009 to December
2010 for a number of permanent and temporary stations in Basra city,
which included the areas of Al-Faw, Abu Al-Khasib, Shatt Al-Arab, Karma
Ali, Al-Sweib and Al-Madina. A range of environmental factors was
measured, such as water temperature, salinity, and pH and dissolved
oxygen. The monthly changes for a full year showed the effect of these
factors on the presence and density of immature stage, so the water of the
fixed five sample collection stations tended to be neutral to basic during
most of the study period and that it had an oxygen content of 11.2 mg /
liter and did not reach the critical limit at any time. The average water
temperature ranged from 7.5 to 32.2 degrees, the salinity rates ranged
between 2.5 and 5.3 parts per thousand. The results also showed a
difference in the distribution and spread of these roles, so it appeared that
individuals of the species A. stephensi were more present than the
members of the species A.pulcherrimus in Basra city, where the eggs of
the A. stephensi appeared in just five months, with a total of 6-25 eggs,
and larvae were present in all the study months except for July, the study
recorded its highest density in October 2009, which was 277.5 larvae /
half liter of water, while the lowest density of 7 larvae / half liter of water
was in August, and the virginity density ranged between 1.3-22 virgin /
pint of water. Regarding the species A.pulcherrimus, the annual number
of eggs ranged between 3-8 eggs, while the highest density of its larvae in
March reached 163 larvae / half a liter of water, and the lowest density
was recorded at 2/1 pint of water in June and August 2990, and it did not
appear in July and September, the annual density of virgins ranged
between 0.7 and 19 virgins per liter of water.
Anopheles mosquitoes for the period from January 2009 to December
2010 for a number of permanent and temporary stations in Basra city,
which included the areas of Al-Faw, Abu Al-Khasib, Shatt Al-Arab, Karma
Ali, Al-Sweib and Al-Madina. A range of environmental factors was
measured, such as water temperature, salinity, and pH and dissolved
oxygen. The monthly changes for a full year showed the effect of these
factors on the presence and density of immature stage, so the water of the
fixed five sample collection stations tended to be neutral to basic during
most of the study period and that it had an oxygen content of 11.2 mg /
liter and did not reach the critical limit at any time. The average water
temperature ranged from 7.5 to 32.2 degrees, the salinity rates ranged
between 2.5 and 5.3 parts per thousand. The results also showed a
difference in the distribution and spread of these roles, so it appeared that
individuals of the species A. stephensi were more present than the
members of the species A.pulcherrimus in Basra city, where the eggs of
the A. stephensi appeared in just five months, with a total of 6-25 eggs,
and larvae were present in all the study months except for July, the study
recorded its highest density in October 2009, which was 277.5 larvae /
half liter of water, while the lowest density of 7 larvae / half liter of water
was in August, and the virginity density ranged between 1.3-22 virgin /
pint of water. Regarding the species A.pulcherrimus, the annual number
of eggs ranged between 3-8 eggs, while the highest density of its larvae in
March reached 163 larvae / half a liter of water, and the lowest density
was recorded at 2/1 pint of water in June and August 2990, and it did not
appear in July and September, the annual density of virgins ranged
between 0.7 and 19 virgins per liter of water.
Keywords
A. pulcherrimus.
Anopheles stephensi
Basra
densities
Environmental factors
immature stages
Abstract
The study included collecting monthly samples of the aquatic stage of
Anopheles mosquitoes for the period from January 2009 to December
2010 for a number of permanent and temporary stations in Basra city,
which included the areas of Al-Faw, Abu Al-Khasib, Shatt Al-Arab, Karma
Ali, Al-Sweib and Al-Madina. A range of environmental factors was
measured, such as water temperature, salinity, and pH and dissolved
oxygen. The monthly changes for a full year showed the effect of these
factors on the presence and density of immature stage, so the water of the
fixed five sample collection stations tended to be neutral to basic during
most of the study period and that it had an oxygen content of 11.2 mg /
liter and did not reach the critical limit at any time. The average water
temperature ranged from 7.5 to 32.2 degrees, the salinity rates ranged
between 2.5 and 5.3 parts per thousand. The results also showed a
difference in the distribution and spread of these roles, so it appeared that
individuals of the species A. stephensi were more present than the
members of the species A.pulcherrimus in Basra city, where the eggs of
the A. stephensi appeared in just five months, with a total of 6-25 eggs,
and larvae were present in all the study months except for July, the study
recorded its highest density in October 2009, which was 277.5 larvae /
half liter of water, while the lowest density of 7 larvae / half liter of water
was in August, and the virginity density ranged between 1.3-22 virgin /
pint of water. Regarding the species A.pulcherrimus, the annual number
of eggs ranged between 3-8 eggs, while the highest density of its larvae in
March reached 163 larvae / half a liter of water, and the lowest density
was recorded at 2/1 pint of water in June and August 2990, and it did not
appear in July and September, the annual density of virgins ranged
between 0.7 and 19 virgins per liter of water.
Anopheles mosquitoes for the period from January 2009 to December
2010 for a number of permanent and temporary stations in Basra city,
which included the areas of Al-Faw, Abu Al-Khasib, Shatt Al-Arab, Karma
Ali, Al-Sweib and Al-Madina. A range of environmental factors was
measured, such as water temperature, salinity, and pH and dissolved
oxygen. The monthly changes for a full year showed the effect of these
factors on the presence and density of immature stage, so the water of the
fixed five sample collection stations tended to be neutral to basic during
most of the study period and that it had an oxygen content of 11.2 mg /
liter and did not reach the critical limit at any time. The average water
temperature ranged from 7.5 to 32.2 degrees, the salinity rates ranged
between 2.5 and 5.3 parts per thousand. The results also showed a
difference in the distribution and spread of these roles, so it appeared that
individuals of the species A. stephensi were more present than the
members of the species A.pulcherrimus in Basra city, where the eggs of
the A. stephensi appeared in just five months, with a total of 6-25 eggs,
and larvae were present in all the study months except for July, the study
recorded its highest density in October 2009, which was 277.5 larvae /
half liter of water, while the lowest density of 7 larvae / half liter of water
was in August, and the virginity density ranged between 1.3-22 virgin /
pint of water. Regarding the species A.pulcherrimus, the annual number
of eggs ranged between 3-8 eggs, while the highest density of its larvae in
March reached 163 larvae / half a liter of water, and the lowest density
was recorded at 2/1 pint of water in June and August 2990, and it did not
appear in July and September, the annual density of virgins ranged
between 0.7 and 19 virgins per liter of water.
Keywords
A. pulcherrimus.
Anopheles stephensi
Basra
densities
Environmental factors
immature stages