Application strategies by selective medium treated with entomopathogenic bacteria Serratia marcescens and Pseudomonas aeruginosa as potential biocontrol against Coptotermes curvignathus

Bibliographic Details
Title: Application strategies by selective medium treated with entomopathogenic bacteria Serratia marcescens and Pseudomonas aeruginosa as potential biocontrol against Coptotermes curvignathus
Authors: Kit Ling Chin, Paik San H'ng, Chuan Li Lee, Wan Zhen Wong, Wen Ze Go, Pui San Khoo, Abdullah Chuah Luqman, Zaidon Ashaari
Source: Royal Society Open Science, Vol 8, Iss 4 (2021)
Publisher Information: The Royal Society, 2021.
Publication Year: 2021
Collection: LCC:Science
Subject Terms: Coptotermes curvignathus, Serratia marcescens, Pseudomonas aeruginosa, bacterial transfer medium, application strategies, Science
More Details: The success of microbial termiticides in controlling termites depends on the ability of microbes to grow in different media and the functionality of the microbes as a resistant barrier or toxic bait. This study was conducted to understand the mortality rate and behaviour changes of the subterranean termite Coptotermes curvignathus Holmgren introduced with different concentrations of Serratia marcescens strain LGMS 1 and Pseudomonas aeruginosa strain LGMS 3 using wood and soil as bacterial transfer medium. In general, higher concentration of bacteria in soil caused a reduction in tunnelling activity and wood consumption and an increase in mortality. However, application on wood revealed a different outcome. Wood treated with S. marcescens of 106 CFU ml−1 concentration proved to be more efficient as bait than higher concentration applications as it caused a high mortality rate while still highly palatable for termites. Wood or soil treated with S. marcescens concentration higher than 109 CFU ml−1 creates a high toxicity and repellent barrier for termites. Pseudomonas aeruginosa of 109 CFU ml−1 concentrations applied on wood served as a slow-acting toxic bait. However, the ability for S. marcescens and P. aeruginosa to survive on wood is low, which made the bait unable to retain a useful level of toxicity for a long period of time and frequent reapplication is needed.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2054-5703
Relation: https://doaj.org/toc/2054-5703
DOI: 10.1098/rsos.201311
Access URL: https://doaj.org/article/229ce15b9f7740999a922cab8fcde66a
Accession Number: edsdoj.229ce15b9f7740999a922cab8fcde66a
Database: Directory of Open Access Journals
More Details
ISSN:20545703
DOI:10.1098/rsos.201311
Published in:Royal Society Open Science
Language:English