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					                                                                 VECTOR BIOLOGY & CONTROL LAB
                                                                        DEPARTMENT OF ZOOLOGY,
                                                                 P. G. COLLEGE OF SCIENCE SAIFABAD,
Dr. B. REDDYA NAIK                                         OSMANIA UNIVERSITY, HYDERABAD, AP-500 004
                   M. Sc., Ph.D.,                                      Phone (Res) 91-40-27015126,
Assistant Professor of Zoology,                                                (0ff) 91-40-55965951,
UGC- Research Awardee                                              E-mail: bannothreddya@yahoo.co.in



                                                                     Date: 22-07-2006

                                    Press Note

 Epidemics of Chikungunya and a scenario of Mosquito control in Hyderabad
 In Hyderabad, mosquito breeding takes place mostly in sewage water. About 13 species of
 four important genera of public health were identified from municipal sewage sources. One
 among them is Aedes aegypti which is a causative vector of Chikungunya. Before the
 outbreak of Chikungunya, there was the problem of dengue and malarial diseases that have
 wrecked havoc to tribal populations in Andhra Pradesh. The efforts of MCH in mosquito
 control over the last fortnight are highly appreciable; particularly the Commissioner MCH
 Mr. Sanjay Jaju’s personal supervision is highly commendable. If this trend continues, it may
 lead to lessening of the mosquito menace in the days to come. The network of
 sewage/drainage is unbearable to the rising populations in urban areas. Constant choking and
 debris, leads to formation of tiny eddies/puddles of water, suffice to increase mosquito
 breeding. As part of our research studies on biological control of mosquitoes in urban sewage
 water, we found an interesting result in mosquito breeding index. Earlier, in any given habitat
 of sewage water there was a very high breeding index of mosquitoes i.e., up to 1250
 mosquito larvae per dip (MLPD). Now it has come down to 135 MLPD. In some areas like
 the Musi River near Attapur bridge which was a potential mosquito breeding area has now
 recorded a zero MLPD due to the efforts of the MCH. On the other hand some areas like
 Bapu Ghat nala, the mosquito larval breeding index remains consistent (1165 MLPD); upon
 enquiry, the residents inform us that the municipal worker, instead of spraying the larvicide
 with a sprinkler has been poring it with a bottle in some corner. This sort of improper
 larvicidal application shows that that the person engaged for this purpose may not be aware
 of mosquito larval breeding habitat and their control management.

 To enlighten the workers on various aspects of mosquito control, the Vector Biology and
 Control Lab, P. G. College of Science Saifabad, conducted a training camp for about 36
 MCH workers during September 2005. Free-of-cost training programmes initiates such as
 above may help in targeting the right breeding areas than mere spraying in Para-domestic
 areas for mosquito control. Along with this, we also feel necessary that the contractors
 employed for larvicidal/mosquitocidal activities too must have a basic knowledge of the
 biology of mosquitoes.




 Dr. B. REDDYA NAIK

				
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