Hormone Analogues and Chitin Synthesis Inhibitors

Chandi, Anureet Kaur; Kaur, Avneet

doi:10.1007/978-981-16-3591-5_8

Cited by 4 publications

(1 citation statement)

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“…Because humans and other mammals do not have chitin, CSIs have minimal adverse effects on them, and insect pests rarely develop resistance to them. They are intensively utilized in various applications such as controlling flies, beetles, and moths in fruit trees and greenhouse crops (Chandi & Kaur, 2021; Lewis et al, 2016; Merzendorfer, 2013; Pener & Dhadialla, 2012; Rezende et al, 2016), protecting grains from pests during product storage (Abo‐Elghar et al, 2004), and controlling gill lice on salmon farms (Harðardóttir et al, 2019; Macken et al, 2015). Even though teflubenzuron and several other CSIs (including chlorfluazuron, diflubenzuron, flucycloxuron, flufenoxuron, hexaflumuron, lufenuron, triflumuron, and novaluron) are currently not approved as active substances in plant protection products within the European Union (2009), many other countries still allow the use of CSIs, and several scientific studies have proved the efficiency of new CSIs, which may lead to their increasing use (Cruces et al, 2021; Hamadah et al, 2015; Kostyukovsky & Trostanetsky, 2006; Yasir et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Chronic Effects of an Insect Growth Regulator (teflubenzuron) on the Life Cycle and Population Growth Rate of Folsomia candida

Xie,

Slotsbo,

Ilyaskina

et al. 2024

Enviro Toxic and Chemistry

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Current standard toxicity tests on nontarget soil invertebrates mainly focus on the endpoints survival and reproduction. Such results are likely insufficient to predict effects at higher organizational levels, for example, the population level. We assessed the effects of exposure to the pesticide teflubenzuron on the collembolan Folsomia candida, by performing a full life‐cycle experiment exposing single individuals via contaminated food (uncontaminated control and 0.2, 0.32, 0.48, 0.72, 1.08, and 1.6 mg/kg dry yeast). Several life‐history traits were considered by following the growth and development of newly hatched individuals over a period of 65 days. We assessed survival, body length, time to first oviposition, cumulative egg production, and hatchability of eggs. A two‐stage model was applied to calculate the population growth rate (λ) combined with elasticity analysis to reveal the relative sensitivity of λ to the effects of teflubenzuron on each life‐history parameter. Body length was the least sensitive life‐history parameter (median effective concentration = 1.10 mg teflubenzuron/kg dry yeast) followed by time to first oviposition (0.96 mg/kg), survival (median lethal concentration = 0.87 mg/kg), cumulative egg production (0.32 mg/kg), and egg hatchability (0.27 mg/kg). Population growth decreased with increasing concentrations of teflubenzuron (λ = 1.162/day in control to 1.005/day in 0.72 mg/kg dry yeast, with populations going extinct at 1.08 and 1.6 mg/kg dry yeast). Elasticity analysis showed that changes in juvenile survival had a greater impact on the population growth rate compared with the other life‐history traits. Our study provides a comprehensive overview of individual‐level effects of long‐term exposure to teflubenzuron and integrates these effects to assess the potential risk to collembolan populations. Environ Toxicol Chem 2024;00:1–11. © 2024 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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