Table of Contents
Journal of Insects
Volume 2013, Article ID 627304, 5 pages
Research Article

Distribution of Dengue Vectors during Pre- and Post-Monsoon Seasons in Higher Attitudes of Nilgiri Hills of Western Ghats, India

1NCDC, DGHS, Ministry of Health, Government of India, 22 Sham Nath Marg, Delhi, India
2NVBDCP, ROH&FW, Government of India, Besant Nagar, Chennai, Tamil Nadu, India
3SIB-NCDC, DGHS, Ministry of Health, Government of India, The Nilgiris, Tamil Nadu, India

Received 14 September 2013; Revised 6 November 2013; Accepted 6 November 2013

Academic Editor: Hans Merzendorfer

Copyright © 2013 R. Ravikumar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Entomological survey was carried out to record dengue vectors during pre- and post-monsoon seasons in 2012 from different breeding places in residential and forested areas of different altitudes of the Nilgiris, namely, Mettupalayam (330 mts), Kallar (400 mts), Burliar (900 mts), Marapalam (1050 mts), and Coonoor (1800 mts). Results showed that maximum number of dengue vector breeding was recorded at Mettupalayam during pre-monsoon season followed by Kallar, Burliar, Coonoor, and Marapalam. The post-monsoon season survey also revealed that the maximum number of dengue vector breeding was found at Mettupalayam, followed by Burliar, Coonoor, and Kallar, and Aedes immature was not found in Marapalam. Ae. aegypti species was recorded in all the study areas during pre- and post-monsoon seasons. Whereas Ae. albopictus was recorded only at Mettupalayam, Kallar, and Burliar during pre- and post-monsoon seasons. Besides these two dengue vectors, a nonvector species Ae. vittatus ( ) was also recorded at Kallar and Burliar.