Objective To evaluate the effects of the Metarhizium anisopliae CQMa421 bait in controlling Blattella germanica in both laboratory and field settings, and to provide a reference for the application of fungal insecticides in the control of hygiene pests. Methods The M. anisopliae CQMa421 baits at different concentrations were prepared, and their effects on the population density of B. germanica were measured in the laboratory and field settings. SPSS 25.0 software was used to analyze mortality, median lethal time (LT50), median lethal concentration (LC50), and 90% lethal concentration (LC90) to evaluate the cockroach-killing effects of the M. anisopliae CQMa421 baits. The chi-square test was used to compare mortality between groups. Results The laboratory test showed that after feeding B. germanica for 12 days with the M. anisopliae CQMa421 bait at 1×108 spores/g, LT50was (6.85±0.24) days. In the field test, after placing the M. anisopliae CQMa421 bait at 1×108 spores/g (1 box/per 2.5 m2) for 30 days, the relative density of B. germanica decreased by 93.22%. Conclusion The M. anisopliae CQMa421 bait at 1×108 spores/g can effectively control the population density of B. germanica.
HE Ya-ming, JI Heng-qing, PENG Guo-xiong, XIAO Han-sen, TU Tao-tian, ZHANG Ying, YU Zhan, LIU Zong-ling, WANG Xiu-juan, LI Ming
. Efficacy of Metarhizium anisopliae CQMa421 bait against cockroaches: A laboratory and field study[J]. Chinese Journal of Vector Biology and Control, 2021
, 32(5)
: 633
-636
.
DOI: 10.11853/j.issn.1003.8280.2021.05.025
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