Larvicidal activity of Xenorhabdus and Photorhabdus bacteria against Aedes aegypti and Aed

Larvicidal activity of Xenorhabdus and Photorhabdus bacteria against Aedes aegypti and

Aedes albopictus

Apichat Vitta;Punnawat Thimpoo;Wipanee Meesil;Thatcha Yimthin;Chamaiporn Fukruksa;Raxsina Thanwisai

Polseela;Bandid

Mangkit;Sarunporn

Tandhavanant;Aunchalee

【期刊名称】《亚太热带生物医学杂志（英文版）》 【年(卷),期】2018(008)001 【摘要】Objective:To bacteria,Xenorhabdus luminescens

evaluate

the

efficacy

of

symbiotic

indica,Xenorhabdus

and

stockiae,Photorhabdus

luminescens

subsp,akhurstii Photorhabdus

subsp.hainanensis as a larvicide against Aedes aegypti and Aedes albopictus.Methods:Larvae (L3-L4) of Aedes aegyptiand Aedes albopictus were given 2 mL of a suspension 107-108 CFU/mL of each symbiotic bacterium.Distilled water and Escherichia coli ATCC· 25922 were used as the control.The morality rate of the larval mosquitoes was observed at 24,48,72 and 96 h.The experiment was performed in triplicates.Results:The larvae of both Aedes species started to die at 24 h exposure.Aedes aegypti showed the highest mortality rate (87％-99％),96 h after exposure to Xenorhabdus stockiae (bNBP22.2_TH).The mortality rate of Aedes albopictus was between 82％ and 96％ at 96 h after exposure to Xenorhabdus indica (bKK26.2_TH).Low effectiveness of