Longevity and Reproduction of Frankliniella occidentalis and Thrips tabaci on Cucumber under Controlled Conditions

A Predator-Prey Population Dynamics Simulation for Biological Control Of Frankliniella Occidentalis (Western Flower Thrips) By Orius Laevigatus In Strawberry Plants

“…In this study, we selected a consistent temperature of 25 • C as the base for modeling the predator-prey system. However, an insect's biological parameters are inherently influenced by temperature, significantly impacting the dynamics of predator-prey interactions (Deligeorgidis et al, 2006;Sanchez and Lacasa, 2002). Therefore, incorporating temperature effects into the model is important for predictive application of the model outside this baseline.…”

“…Due to the lack of specific data in the literature for our modeled scenario, we relied on reported values from studies that examined the biological parameters Orius and WFT under various experimental conditions. Deligeorgidis et al (2006) Considering data availability, we chose two temperature values around 25 • C, specifically 20 • C and 30 • C for this analysis. We initially calculated the proportional increase or decrease of each parameter of each species at 20 • C and 30 • C relative to 25 • C using published data from Deligeorgidis et al (2006) and Sanchez and Lacasa (2002).…”

“…Deligeorgidis et al (2006) Considering data availability, we chose two temperature values around 25 • C, specifically 20 • C and 30 • C for this analysis. We initially calculated the proportional increase or decrease of each parameter of each species at 20 • C and 30 • C relative to 25 • C using published data from Deligeorgidis et al (2006) and Sanchez and Lacasa (2002). Under the assumption that the variation in an insect species' biological parameters across different temperature values follows a consistent pattern irrespective of the host plant or food source (i.e., the ratio of biological parameters at different temperature values for a species remains consistent), we derived the biological parameter values for WFT and Orius based on our available data for 25 • C, documented in Table 1 and Table 2 The simulations indicate that an initial ratio of 1:0.2 of WFT to Orius at all three temperatures can effectively prevent WFT populations from reaching the Economic Injury Level (EIL), which is estimated to be around 5 adult WFT per flower (Sampson et al, 2014).…”