Ovicidal activity of juvenile hormone mimics in the bean bug, &lt;i&gt;Riptortus pedestris&lt;/i&gt;

Naruse, Shouya; Ogino, Mayuko; Nakagawa, Takao; Yasuno, Yoko; Jouraku, Akiya; Shiotsuki, Takahiro; Shinada, Tetsuro; Miura, Ken; Minakuchi, Chieka

doi:10.1584/jpestics.d20-075

Cited by 2 publications

(1 citation statement)

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“…29,31) However, this notion relies on defects inflicted by high doses of synthetic JH mimics or JH homologs foreign to the treated species. Naruse and colleagues 32) subject the eggs of the bean bug, Riptortus pedestris, to the natural heteropteran JH, identified in this species as JH III skipped bisepoxide (JHSB 3 ). 33) They show that JHSB 3 induced developmental malformations and arrest to the bean bug embryos at micromolar doses, whereas the common JH III or juvenoid IGRs such as pyriproxyfen had to be applied in doses at least thousand-fold higher.…”

Section: Stage-specific Organismal Effects Of Jh Juvenoid Igrs and Of A Novel Insecticidementioning

confidence: 99%

New ways and new hopes for IGR development

Jindra

2021

J. Pestic. Sci.

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Insect Growth Regulators (IGRs) represent advanced, bio-rational insecticides. This Special Issue reflects progress in IGR development that has been enabled by insight into the molecular principles of biosynthetic or hormone signaling pathways. The unifying principle is aiming at processes and molecular targets that are unique to arthropods and ideally to narrower insect taxa representing pests or disease vectors. While some strategies of obtaining the desired compounds for chemical intervention rely on rational, structure-based design or computational power, others exploit technologies allowing automated, high-throughput screening of large chemical libraries. All avenues leading to selective and environmentally safe pest control are valid as we face the imminent threat of the declining world insect population.

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Section: Stage-specific Organismal Effects Of Jh Juvenoid Igrs and Of A Novel Insecticidementioning

confidence: 99%

New ways and new hopes for IGR development

Jindra

2021

J. Pestic. Sci.

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Assessing the Larvicidal Properties of Endemic Campeche, Mexico Plant Piper cordoncillo var. apazoteanum (Piperaceae) against Aedes aegypti (Diptera: Culicidae) Mosquitoes

Alonso-Hernández

Granados-Echegoyen

Vera‐Reyes

et al. 2023

Insects

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The research aims to investigate the mortality effect of essential oil from Piper cordoncillo var. apazoteanum, an endemic plant from Campeche, Mexico, on early second-instar Aedes aegypti larvae; it also aims to identify the volatile compounds present in the fresh leaves of the plant. To test the effectiveness of the essential oil, we followed World Health Organization Standard Procedures. Larvae were observed for 17 consecutive days after treatment to determine the mortality and growth-inhibitory effect exerted by the essential oil. The results showed that the essential oil was effective in controlling mosquito populations. At a concentration of 800 ppm, the oil achieved an effectiveness rate of 70.00 ± 8.16% after 24 h, increasing to 100.00 ± 0.01% mortality after 72 h. With a concentration of 400 ppm, the effectiveness was 98.33 ± 0.17% by the end of the experiment. Furthermore, the obtained results demonstrated that the LC50 value was 61.84 ± 6.79 ppm, while the LC90 value was 167.20 ± 11.49 ppm. Essential oil concentrations inhibited the growth of immature insect stages, with concentrations between 800–100 ppm demonstrating very high inhibitory activity, and the lowest concentration of 50 ppm showing high inhibitory activity. The study also identified 24 chemical compounds representing 86.71% of the volatile compound composition of the fresh leaves of P. cordoncillo; the most abundant compounds were Safrole, Caryophyllene oxide, E-Nerolidol, and Calarene epoxide. The method used to extract the volatile compounds, solvent-free microwave extraction (SFME), is a promising alternative to traditional methods that avoids the use of potentially harmful solvents, making it more ecologically friendly and potentially safer for professionals handling the extracted compounds. Overall, the study demonstrates the potential of P. cordoncillo essential oil as an effective means of controlling mosquito populations, and provides valuable information on the chemical composition of the plant.Moreover, our study is the first to report on the biological activity and chemical composition of P. cordoncillo worldwide.

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Ovicidal activity of juvenile hormone mimics in the bean bug, <i>Riptortus pedestris</i>

Cited by 2 publications

References 32 publications

New ways and new hopes for IGR development

New ways and new hopes for IGR development

Assessing the Larvicidal Properties of Endemic Campeche, Mexico Plant Piper cordoncillo var. apazoteanum (Piperaceae) against Aedes aegypti (Diptera: Culicidae) Mosquitoes

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