Mosquito larvicidal trap (MLT): an effective surveillance and control tool for aedes mosquitoes

Issue Date

10-2017

Abstract

Larvicidal potential and ovipositional effect of Mosquito Larvicidal Trap (MLT) on Aedes mosquitoes were determined under field conditions. The MLT is modified from an ovitrap utilized by De Las Llagas et al. in all dengue mosquito surveillance and control studies in the Philippines. It is the classical ovitrap with 2% Novaluron, an insect growth regulator and proven attractant in an ovitrap clean water. MLT was installed and serviced every three weeks (July 2012 to June 2013) in each of 220 households in Batong Malake and San Antonio, Los Baños, Laguna, both known endemic sites for dengue transmission. Efficacy of MLT as a surveillance tool was compared in terms or relative attractiveness to ovipositing mosquitoes, to the conventional inspection of containers with water and the classical ovitrap. The Breteau Index, ovitrap index (OI), and MLT positive for wrigglers were determined. The mean MLT found positive with mosquito was 70.5% in Batong Malake (PI = 53.5%) and 56.6% (OI = 50.4%) in San Antonio Novaluron increased attractiveness to females to lay eggs, and killed larvae. MLT was more attractive than containers or classical ovitraps for oviposition, lethal to deposited eggs, and prevented pupal development, indicating autocidal activity to larvae. Thus, MLT prevents adult emergence by preventing pupal development. MLT as an integral component of dengue vector control program will help reduce mosquito density at immature stages and lessen dependence on adulticides. With threats of vertical and transstadial transmission, managing vectors at early developmental stages must be implemented.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

155

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

CULICIDAE; AEDES; INSECT GROWTH REGULATORS; TRAPS; MONITORING; PEST MONITORING; INSECT CONTROL; PEST CONTROL BAITS; PEST CONTROL; ATTRACTANTS

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