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Assessment of the lethal and sublethal effects by spinetoram on cotton bollworm
- Source :
- PLoS ONE, Vol 13, Iss 9, p e0204154 (2018)
- Publication Year :
- 2018
-
Abstract
- Helicoverpa armigera is an universal pest around the world, which has recovered again in recent years because of the adjustment of cropping structure and resistance to Bacillus thuringiensis (Bt) in China. As a new insecticide spinetoram is extensively used to control many pest insects, including H. armigera. However the lethal and sublethal effects of spinetoram on cotton bollworm have not been assessed. In the present study, the toxicity of spinetoram against cotton bollworm was tested under laboratory conditions. Results demonstrated spinetoram showed an excellent activity against H. armigera, especially, against Bt (Cry1Ac) resistant H. armigera. Treatment with spinetoram at the doses of 0.19 mg/kg and 0.36 mg/kg (LC8 and LC20 after 24h oral exposure) significantly arrested the development of surviving larvae and caused significant decrease in larvae wet weight. Besides, the survivors after spinetoram treatments showed significant reduction of pupation ratio, pupal weight, emergence ratio, longevity and fecundity of adults. At same time, spinetoram treatments resulted in significant increase in the prepupal and pupal periods of survivors. In summary, these results showed that spinetoram could be used as an effective pesticide to control H. armigera, especially Cry1Ac-ressitacne, consequently to take both lethal and sublethal effects to cotton bollworm into consideration in cotton bollworm control strategy.
- Subjects :
- 0106 biological sciences
0301 basic medicine
lcsh:Medicine
Helicoverpa armigera
Moths
01 natural sciences
Toxicology
Insecticide Resistance
03 medical and health sciences
Hemolysin Proteins
Bacterial Proteins
Bacillus thuringiensis
Toxicity Tests, Acute
Animals
lcsh:Science
Larva
Gossypium
Multidisciplinary
biology
Bacillus thuringiensis Toxins
business.industry
fungi
lcsh:R
Body Weight
Pest control
Pupa
Pesticide
biology.organism_classification
Fecundity
Endotoxins
010602 entomology
030104 developmental biology
Fertility
Cry1Ac
lcsh:Q
PEST analysis
Macrolides
business
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 13
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- PloS one
- Accession number :
- edsair.doi.dedup.....655552a38e5171f4bd24b07e284bfc18