Insecticidal characteristics and mechanism of a promising natural insecticide against saw-toothed grain beetle

Li, Chunyan; Sheng, Xueru; Li, Na; Ping, Qingwei; Lü, Peng; Zhang, Jian

doi:10.1039/d1ra08740a

Cited by 4 publications

(4 citation statements)

References 44 publications

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“…Adding diatomite to fertilizer can lead to increased termite mortality [30]. Moreover, both raw diatomite and calcined diatomite have been used as natural insecticides to remove common stored-grain pests [31]. Multi-walled carbon nanotubes can enhance the toxic effects of dibutyl phthalate on zebrafish in the early life stages [32].…”

Section: Introductionmentioning

confidence: 99%

Toxicity and Behavior-Altering Effects of Three Nanomaterials on Red Imported Fire Ants and Their Effectiveness in Combination with Indoxacarb

Ma,

Fu,

Zhang

et al. 2024

Insects

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The red imported fire ant (Solenopsis invicta Buren) is one of the 100 worst invasive alien species in the world. At present, the control of red imported fire ants is still mainly based on chemical control, and the most commonly used is indoxacarb bait. In this study, the contact and feeding toxicity of 16 kinds of nanomaterials to workers, larvae, and reproductive ants were evaluated after 24 h, 48 h, and 72 h. The results showed that the mortality of diatomite, Silica (raspberry-shaped), and multi-walled carbon nanotubes among workers reached 98.67%, 97.33%, and 68%, respectively, after contact treatment of 72 h. The mortality of both larval and reproductive ants was less than 20% after 72 h of treatment. All mortality rates in the fed treatment group were below 20% after 72 h. Subsequently, we evaluated the digging, corpse-removal, and foraging behaviors of workers after feeding with diatomite, Silica (raspberry-shaped), and multi-walled carbon nanotubes for 24 h, which yielded inhibitory effects on the behavior of red imported fire ants. The most effective was diatomite, which dramatically decreased the number of workers that dug, extended the time needed for worker ant corpse removal and foraging activities, decreased the number of workers that foraged, and decreased the weight of the food carried by the workers. In addition, we also evaluated the contact and feeding toxicity of these three nanomaterials in combination with indoxacarb on red imported fire ants. According to contact toxicity, after 12 h of contact treatment, the death rate among the red imported fire ants exposed to the three materials combined with indoxacarb reached more than 97%. After 72 h of exposure treatment, the mortality rate of larvae was more than 73% when the nanomaterial content was above 1% and 83% when the diatomite content was 0.5%, which was significantly higher than the 50% recorded in the indoxacarb control group. After 72 h of feeding treatment, the mortality of diatomite, Silica (raspberry-shaped), and multi-walled carbon nanotubes combined with indoxacarb reached 92%, 87%, and 98%, respectively. The death rates of the three kinds of composite ants reached 97%, 67%, and 87%, respectively. The three kinds of composite food had significant inhibitory effects on the behavior of workers, and the trend was largely consistent with the effect of nanomaterials alone. This study provides technical support for the application of nanomaterials in red imported fire ant control.

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Section: Introductionmentioning

confidence: 99%

Toxicity and Behavior-Altering Effects of Three Nanomaterials on Red Imported Fire Ants and Their Effectiveness in Combination with Indoxacarb

Ma,

Fu,

Zhang

et al. 2024

Insects

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“…Diatomaceous earth is a siliceous rock, generally formed by the silicate remains of dead unicellular algae collectively known as diatoms 17 . Diatomaceous earth is stable in nature, does not produce toxic chemical residues or react with substances in the environment, has acutely low toxicity to mammals, does not affect the quality and safety of food, and is an excellent natural pesticide 18 . Diatomaceous earth (the main component of amorphous silica) reacts with acid by soaking in potassium hydroxide solution to form a non‐toxic and environmentally friendly nano‐soluble silica (Nano‐ss) of about 5–100 nm 19 .…”

Section: Introductionmentioning

confidence: 99%

“…17 Diatomaceous earth is stable in nature, does not produce toxic chemical residues or react with substances in the environment, has acutely low toxicity to mammals, does not affect the quality and safety of food, and is an excellent natural pesticide. 18 Diatomaceous earth (the main component of amorphous silica) reacts with acid by soaking in potassium hydroxide solution to form a non-toxic and environmentally friendly nano-soluble silica (Nano-ss) of about 5-100 nm. 19 Nano-ss is uniformly dispersed in water and has the characteristics of strong adsorption, good hydrophilicity, large specific surface area, and high stability, 20 which can also improve plant resistance, improve soil, and increase yield when applied as silica fertilizer.…”

Section: Introductionmentioning

confidence: 99%

Preparation of chitosan/sodium tripolyphosphate@nano‐silica sol microcapsule suspensions and their application in soybean cyst nematode control

Zhang

et al. 2023

J of Applied Polymer Sci

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Fosthiazate is a common insecticide for root‐knot nematode control, but it has a short shelf life and is prone to decomposition. In order to improve the stability and prolong the release time, this experiment used the ionic gel method to cross‐link chitosan with sodium tripolyphosphate and added nano‐silica sol to prepare microcapsules suspensions. The optimal preparation parameters for the preparation of chitosan/sodium tripolyphosphate@nano‐silica sol microcapsulated suspensions were optimized by single factor experiments and response surface analysis, and the encapsulation efficiency reached 61.3%. The highest control effect in greenhouse pots can reach 84.1%, and the optimal concentration was 2 g/m2 mixed with soil, which increased stem length, root length and fresh weight by 81.1%, 47.7% and 62.5%. The study showed that the microcapsules of chitosan cross‐linked with sodium tripolyphosphate and added with nano‐silica sol could significantly prolong the release of Fosthiazate, which also provided a positive effect on soybean cyst nematode control.

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“…According to the mineralogical classification, diatomite is non-crystalline opal-A and is mainly composed of amorphous hydrated silica (SiO 2 · n H 2 O) . Due to its unique physical and chemical characteristics, such as high mechanical strength, low density, and natural pores, we can find its applications in varied areas, such as a filtration aid, a flame retardant, a mild abrasive in products including metal polishes and toothpaste, an insecticide, an absorbent for liquids, a reinforcing filler in plastics and rubber, an antiblock in plastic films, a porous support for chemical catalysts, a stabilizing component of dynamite, a thermal insulator, and an interior decoration material. − Diatomite has been approved as a food-grade material by the FDA (the U.S. Food and Drug Administration) . However, the PO 4 3– adsorption capacity of natural diatomite could not be competitive compared with other industrial adsorption materials because of the blocked channels and lower specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Diatomite Composited with a Zeolitic Imidazolate Framework for Removing Phosphate from Water

Zhang

Fan

et al. 2022

ACS Omega

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Adsorption technology based on various adsorbents has been widely applied in wastewater treatment containing phosphate. A novel diatomite adsorbent composited with ZIF-8 (CZD) was developed for removing phosphate from water in this work. The chitosan was used to pre-modify the diatomite so that ZIF-8 could be anchored on the surface of the diatomite solidly and uniformly. The diatomite composited with ZIF-8 was then used to remove phosphate in water by an adsorption process, the process variables such as adsorption time, temperature, pH, and competitive ions were investigated. The electrostatic attraction was the primary mechanism of phosphate removal. The adsorption reached equilibrium within 90 min, and its sorption capacity increased when adsorption time and temperature increased. Especially, CZD had a rapid adsorption rate and 85% of the phosphate in the solution can be adsorbed within the first 10 min. The maximum phosphate adsorption capacities of the modified diatomite reached 13.46, 13.55, and 13.95 mg/g at 25, 35, and 45 °C, respectively. The removal efficiencies of CZD for phosphate were more than 98% and even came up to 100% at 45 °C. The adsorption isotherms fit well with the Langmuir isotherm model. The Freundlich isotherm and Temkin isotherm showed that the adsorption process is physical in nature. The kinetic data of the adsorption process were fitted by the pseudo-second-order kinetics. Thermodynamic parameters indicated that the adsorption process was endothermic. This adsorbent provided an alternative for phosphate removal on account of the high adsorption efficiency in a short time. Therefore, CZD could be a promising and eco-friendly phosphate adsorbent for wastewater treatment.

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Insecticidal characteristics and mechanism of a promising natural insecticide against saw-toothed grain beetle

Abstract: Insecticidal mechanism of the diatomite.

Cited by 4 publications

References 44 publications

Toxicity and Behavior-Altering Effects of Three Nanomaterials on Red Imported Fire Ants and Their Effectiveness in Combination with Indoxacarb

Toxicity and Behavior-Altering Effects of Three Nanomaterials on Red Imported Fire Ants and Their Effectiveness in Combination with Indoxacarb

Preparation of chitosan/sodium tripolyphosphate@nano‐silica sol microcapsule suspensions and their application in soybean cyst nematode control

Diatomite Composited with a Zeolitic Imidazolate Framework for Removing Phosphate from Water

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