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- Title
Densovirus Oil Suspension Significantly Improves the Efficacy and Duration of Larvicidal Activity against Aedes albopictus.
- Authors
Batool, Khadija; Xiao, Jie; Xu, Ye; Yang, Ting; Tao, Peiwen; Zhao, Siyu; Chen, Jiao; Alam, Intikhab; Xie, Yugu; Gu, Jinbao; Chen, Xiaoguang
- Abstract
Aedes albopictus is the sole vector for various mosquito-borne viruses, including dengue, chikungunya, and Zika. Ecofriendly biological agents are required to reduce the spread of these mosquito-borne infections. Mosquito densoviruses (MDVs) are entomopathogenic mosquito-specific viruses, which can reduce the capacity of isolated vectors and decrease mosquito-borne viral disease transmission. However, their variable pathogenicity restricts their commercial use. In the present study, we developed a series of novel larvicide oil suspensions (denoted Bacillus thuringiensis (Bti) oil, Ae. albopictus densovirus (AalDV-5) oil, and a mixture of AalDV-5+Bti oil), which were tested against Ae. albopictus larvae under experimental semi-field and open-field conditions. The effect of AalDV-5 on non-target species was also evaluated. The combined effect of AalDV-5+Bti was greater than that of individual toxins and was longer lasting and more persistent compared with the laboratory AalDV-5 virus strain. The virus was quantified on a weekly basis by quantitative polymerase chain reaction (qPCR) and was persistently detected in rearing water as well as in dead larvae. Wildtype densovirus is not pathogenic to non-target organisms. The present findings confirm the improved effect of a mixed microbial suspension (AalDV-5+Bti oil) larvicide against Ae. albopictus. The development and testing of these products will enable better control of the vector mosquitoes.
- Subjects
AEDES albopictus; VIRAL transmission; ARBOVIRUS diseases; BACILLUS thuringiensis; CHIKUNGUNYA; POLYMERASE chain reaction; MOSQUITO vectors
- Publication
Viruses (1999-4915), 2022, Vol 14, Issue 3, p475
- ISSN
1999-4915
- Publication type
Article
- DOI
10.3390/v14030475