The density of dengue fever virus-vector mosquitoes, (Aedes aegypti L.) at different places in towns of Karachi, during summer and winter, 2009-2011. | [Pakistan Journal of Entomology • 2012]

Author(s):

1. Rajput Muhammed Tariq: MAH Qadri Biological Research Centre, University of Karachi, Karachi, Pakistan

2. Muhammad Arshad Azm: Department of Zoology, University of Karachi, Pakistan

3. Syed Salahuddin Qadri: Jamia Millia Govt. Degree College Malir, Karachi, Pakistan

4. Syed Anser Rizvi: Department of Zoology, University of Karachi, Pakistan

5. Syed Naeem-Ul-Hasan Naqvi: Baqai Medical University (BMU), Baqai Institute of Pharmaceutical Science (BIPS), Karachi, Pakistan

6. Imtiaz Ahmad: Department of Agriculture, University of Karachi, Karachi, Pakistan

Abstract:

The dengue season in Karachi Division, the dengue Zone of Sindh province usually starts with the start of raining season in Sindh. Generally July to November are the month for dengue infection. In December , January & February, the density remain under control due to Natural Thermal Control, but from March to June its population starts to grow slowly due to increase of temperature and in raining season their population shoot rapidly just after one week of the 1st sufficient rain, whose water could persist even after evaporation for seven days. In the present paper, the density of dengue fever virus (DFV) -vector mosquitoes (DFV-VM) have been recorded continuously from December 2009 – May 2011 (Total 18 Months) to observe the presence (prevalence) throughout the year, during all seasons. Each breeding site of the town was visited weekly i.e. 4 times a month. These 4 observations were added to get the average monthly data and the average monthly data of six months was subjected to calculate the average density in six months. The Towns were ranked in decreasing sequence from high to low density. Liaquatabad Town showed the highest rank i.e. # 1 due highest density (2382.87/six month) and Keamari Town showed the lowest density (17.50/6 month). All town areas of Karachi Division were positive for DFV-VM that is why it was termed as Dengue Zone of Sindh province, for Aedes aegypti L., where as the Dengue Zone of Punjab province is Lahore, not only for Ae. aegpti L. but also Ae. albopictus Skuse.

Page(s): 187-191

DOI: DOI not available

Published: Journal: Pakistan Journal of Entomology, Volume: 27, Issue: 2, Year: 2012

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