Abstract
The carmine spider mite Tetranychus cinnabarinus (T. cinnabarinus) is a common polyphagous pest that attacks crops, vegetables, flowers, and so on. It is necessary to find lead compounds for developing novel, powerful, and environmentally-friendly acaricides as an alternative approach to controlling the carmine spider mite because of the serious resistance and residual agrochemicals in the environment. In addition, the study on the acaricidal activities of marine bioactive substances is comparatively deficient. In the present study, the acaricidal activity of venom (NnFV) from the jellyfish Nemopilema nomurai against the carmine spider mite T. cinnabarinus was determined for the first time. The venom had contact toxicity, and the 24-h LC50-value was 29.1 μg/mL. The mite body wall was affected by the venom, with the mite body having no luster and being seriously shrunken after 24 h. T. cinnabarinus was a potential target pest of NnFV, which had potential as a type of natural bioacaricide. The repellent activity and systemic toxicity of the venom against T. cinnabarinus were also studied. However, NnFV had no repellent activity and systemic toxicity against T. cinnabarinus.
Highlights
The carmine spider mite T. cinnabarinus (Boisduval) (Acarina: Tetranychidae) is a polyphagous pest that attacks crops, vegetables, and flowers grown in fields and greenhouses worldwide [1].It usually feeds on leaves whose epidermis is damaged, resulting in yellow and brown blotches accompanied by dry leaf-fall
We reported that the venom from the jellyfish Rhopilema esculentum had insecticidal activity against the Stephanitis pyri Fabricius, Aphis medicaginis Koch, and Myzus persicae Sulzer, with 48 h LC50 -values of
NnFV was extracted from the jellyfish ecthoreum, which was discarded because of envenomation and toxicity
Summary
The carmine spider mite T. cinnabarinus (Boisduval) (Acarina: Tetranychidae) is a polyphagous pest that attacks crops, vegetables, and flowers grown in fields and greenhouses worldwide [1]. It usually feeds on leaves whose epidermis is damaged, resulting in yellow and brown blotches accompanied by dry leaf-fall. Reduction in both the quality and quantity of the crops results from severe mite-feeding. It is recognized as the most difficult mite to control due to its small size, short generation time, strong adaptability, and ability to produce resistance. It is necessary to find lead compounds for developing novel, powerful, and environmentally-friendly acaricides, as an alternative approach to controlling the carmine spider mite
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
