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| Adult mosquito density high in MKB |
| Stagnant waterways make ideal breeding grounds for mosquitoes. A view of the Cooum river near Triplicane railway station.
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| INDIA
, 14-December-2007
23:52:33 PM |
| The Chennai Corporation’s recent study of adult mosquito density has shown that MKB Nagar, Vyasarpadi, in north Chennai, is the most affected area.
Adult mosquito density is calculated by trapping mosquitoes using a suction tube. The number of mosquitoes caught in 15 minutes in one location determines the density.
MKB Nagar has an average adult mosquito density of 120 per 10 man hour days (MHD). This means that field workers were able to trap 12 mosquitoes an hour in the area. Pulianthope has a density of 80 per 10 MHD.
Flood-prone parts of Velachery also have an adult mosquito density of 80 per 10 MHD.
Corporation officials said the adult mosquito density was highest in places where there were canals and waterways. Hence, the Kodungaiyur canal, the Mambalam canal and the Captain Cotton canal have been cleaned and desilted this year.
Stretches of the Cooum and the Adyar rivers were cleaned by the Public Works Department.
Chennai Corporation Commissioner Rajesh Lakhoni said field workers used floats (similar to rafts) in canals to spray larvicide on difficult-to-reach stretches. According to entomologists, controlling mosquito breeding and killing larvae are much better ways of tackling the mosquito menace compared to fogging.
Fogging only stuns adult mosquitoes, which often fly away when the exercise begins.
The Corporation has urged residents to ensure that their overhead water tanks are tightly covered.
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