Species composition and monthly distribution of mosquito (culicidae) larvae in the istanbul metropolitan area, turkey

Authors:Ahmet Zeki Sengil, Hayrettin Akkaya, Mahmut Gonenc, Demet Gonenc, Didem Ozkan
Int J Biol Med Res. 2011; 2(1): 415 – 424  |  PDF File

Abstract

There is no data available about the mosquito fauna of Istanbul. In 2003, a project to improve mosquito control and to reduce mosquito densities to an acceptable level began in the Istanbul metropolitan area. The present study gives an overview of data on the species composition, abundance and distribution of mosquito larvae in the Istanbul metropolitan area. Larval samples were collected between May and October, 2003-2007. A total of 293655 larvae were examined from 1701 different samples taken in 15 different potential larval habitats. 45.05% (n=132307) of mosquito larvae were from permanent and 54.95% (n=161348) were from temporary breeding sites. This study showed that Istanbul harbors 21 larval species from the genera Culex, Anopheles, Aedes, Ochlerotatus and Culiseta. When the density of each species was examined, it was found that Cx. pipiens was dominant (91%) and frequent (100%). The highest intensity was in July (134972 larvae) while the lowest was in October (2035 larvae). The larvae intensity and species diversity decreased from 2003 (223079 larvae/15 species) to 2007 (12700/9 species). The present work demonstrates that Cx. pipiens was dominant in Istanbul and larvae intensity and species diversity decreased during this study period. It is likely that this reduction was due to the mosquito control strategy used in the Istanbul metropolitan area.