Abstract

Selva Seematti R.* and Prabakaran V.

ABSTRACT

Mosquitoes are the most important transmitted vector. It can able to carry many disease-causing viruses and parasites. Several species belonging to genera Aedes, Anopheles and Culex are vectors for the pathogen of various diseases like dengue fever, dengue hemorrhagic fever, malaria, Japanese encephalitis and filariasis. Anopheles stephensi are major malaria vectors in India. With an annual incidence of 300-500 million, malaria is still one of the most important communicable diseases. Currently, about 40% of the world s population live in areas where malaria is endemic. Culex quinquefasciatus, a vector of lymphatic filariasis, is widely distributed in tropical zones with around 120 million people infected worldwide and 44 million people having common chronic manifestation. Aedes aegypti is known to carry dengue. In the present study focused with three-difference mosquitoes were selected, such as Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus. The three different mosquito larvae were selected based on instar 2nd, 3rd, 4th. In order to study the Predatory potential of Diplonychus indicus and the prey preference of various nymphal instars like III, IV, V, Male and Female were chosen. Hence the efficacy of three different mosquito larvae were exposed to Diplonychus indicus has been reported to show selective feeding behavior on mosquito larvae. Beyond, which in overall experiment denoted the predators (Diplonychus indicus) were studied, comparative between various larvae only the maximum activity exposed to Aedes aegypti at 4th instars larvae to the dominant exposure in male predators. The success of biological control agents using natural enemies depends on the ability of the predator to select target prey populations.