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Plant Extract Efficacy On Mosquito Mortality: Preliminary Studies On The Effect Of Ailanthus Altissima Extract On Adult Aedes Aegypti And Culex Quinquefasciatus, John R. Wallace, Calen D. Wylie, Ryan L. Wagner

The Great Lakes Entomologist

Abstract

Due to the negative environmental impact and resistance to synthetic insecticides, the development of biological control has increased significantly over the past half century with the potential of plant extracts only recently attracting attention. The purpose of this preliminary study was to examine the potential of Ailanthus altissima extract as a botanical insecticide on adult mosquitoes. Two species of mosquitoes (Aedes aegypti and Culex quinquefasciatus) and a non-target lepidopteran species, Painted Lady butterfly (Vanessa cardui) were treated with A. altissima extract from new, mature, and senesced leaflets using serial dilutions (0, 25, 50, 75, 100%) …

Indiscriminate Ingestion Of Entomopathogenic Nematodes And Their Symbiotic Bacteria By Aedes Aegypti Larvae: A Novel Strategy To Control The Vector Of Chikungunya, Dengue And Yellow Fever., Farooq A. Shah, Mostafa M. Abdoarrahem, Colin Berry, Mustapha Touray, Selçuk Hazir, Tariq M. Butt

Turkish Journal of Zoology

Third and fourth instar larvae of Aedes aegypti actively ingested entomopathogenic nematodes (EPNs) and their symbiotic bacteria, resulting in larval mortality. All six EPN species evaluated in this study were pathogenic to Ae. aegypti but varied significantly in their virulence. Heterorhabditis bacteriophora and Steinernema carpocapsae were most virulent, H. megidis and S. kraussei showed the least virulence, whereas H. downesi and S. feltiae had intermediate virulence. Larval mortality was dose dependent for all EPN species. When using a dose of 100 infective juveniles (IJs) per larva, H. bacteriophora and S. carpocapsae caused 90%-100% mortality, whereas H. downesi and S. feltiae …