دراسة بيئية لحشرة البعوض Culex quinquefasciatusفي محافظة البصرة وامكانية مكافحتها احيائيا وكيميائيا == Study of Environmental of Culex quinquefasciuts and the possibility of biologically and chemically controlled
Author name:
وئام صباح تركي
Supervisor name:
اياد عبد الوهاب عبد القادر | ليلى عبد الرحمن بيان
General topic:
Agricultural sciences
Specific topic:
Plant - Prevention
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture - Department Of Plant Protection
Language:
Arabic
University location:
Basrah
First pages:
31T1889 - p.pdf
Abstract:
This study aimed to a field survey of the insect mosquito Culex quinquefasciatus and study environmentally and control by isolating and diagnosing fungi associated with mosquitoes and The effect of sporoes suspense for isolated fungi on the larvae, and the use of bacteria B. thuringiensis in larval control in addition to the diagnosis of some predators with the larvae of the C. quinquefasciatus and calculate density and evaluate their efficiency against predatory larval phases of mosquitoes. As it has been the use of two types of pesticides that goes back to a group of Neonicotinoids Actara and Quickbayt . The results of the study of the field survey the spread of the insect in most of the province of Basra areas as record city center the highest density of mosquito larvae during the months of April and October amounting to 96.00 and 87.66 larvae / half liter of water, respectively, followed by the Shatt al - Arab area which recorded 89.00 and 88.00 larvae / pint water during the months of April and October, while Zubair recorded the lowest ratio of the density of larvae were 4.66 and 8.33 larva / half liter of water for two months. Where the insect has been present in different aquatic sites (water, sewer, water darker pools, Water drainage, wasted tap water) and record heavy sewage highest density in the presence of mosquito larvae. The results of the study showed that the insect C. quinquefasciatus present in most months of the year except August and January, and recorded her two climaxes peak spring (April and May) and autumn peak (October and November. The results also showed that the increase in killing thelarvae grow directly proportional to the increase commentator bacteria B. thuringiensis concentration as the ratio was at 85.00 and 48.33 for the two phases the second and fourth, respectively, when using focus commentator 910 × 3 spore / ml The lowest ratio was killed was at the focus 710 × 3 amounting to 58.34 and 33.34% for the two phases the second and fourth, respectively. The results also showed a non effect of pesticide Quick on the growth of bacteria while he found little effect of the Actara on the growth of bacteria. There are some predators also recorded along the months the year, such as predator Dineutes aereus and Cybister tripuncututus while the presence of the animal crustal Mycrocylops albidus record seasonally in spring and autumn and the results showed efficiency experience predatory predators mentioned above eccentric different larval insect mosquitoes increase in the rate of depreciation against instar first The second fell rate of depreciation against the larval delayed reconstruction (third and fourth). The results showed superiority of the pesticide Quickbayt for pesticide Actara in the proportion of killing the larvae of the second stage and fourth Mosquito as commensurate proportion of directly proportional murder with the increase of the pesticide and type of focus, as the percentage of murders in the pesticide Quickbayt focus 1 g / l to 100% of the two phases the second and fourth, respectively, and decreased the proportion of murders to reach the emphasis 0.25 g / liter 88.34 and 73.34% on the second and fourth phases respectively. while pesticide record Actara highest killed in a concentration 1 g / liter, amounting to 100 and 81.67% on the phases second and fourth in a row and scored concentration of 0.25 g / liter less proportion73.34 and 51.66% for the first larval phases was the second in a row. The integrated control results also showed that the treatment of the pesticide Quickbayt with bacteria Bti gave the highest percentage of killing larvae second phase and the fourth, reaching 93.89 and 77.22%, respectively, while came after the treatment of the pesticide Actara with bacteria Bti where the percentage of murders 77.78 and 60.00% on the second and fourth phases Respectively .
