Population Parameters and Growth of Riptortus pedestris (Fabricius) (Hemiptera: Alydidae) under Fluctuating Temperature

Abstract

In this study, we determined the influence of fluctuating temperatures on the development and fecundity of the bean bug Riptortus pedestris (Fabricius) (Hemiptera: Alydidae) by collecting life table data for individuals exposed at a constant temperature (24 °C) and three fluctuating temperatures (24 ± 4 °C, 24 ± 6 °C, and 24 ± 8 °C). The raw life history data were analyzed using an age-stage, two-sex life table to take into account the viable development rate among individuals. Based on these analyses, the population projections enabled us to determine the stage structure and variability of population growth under different temperature treatments. Our results revealed shorter periods of immature development and a higher pre-adult survival rate at 24 ± 6 °C than under the other assessed temperature conditions. Furthermore, significant reductions in female longevity were recorded at 24 °C, whereas the fecundity, net reproductive rate, and intrinsic and finite rates of increase were highest at 24 ± 6 °C. These findings reveal that fluctuating temperatures have a positive influence on the life history traits of R. pedestris and indicate that observations made under constant temperatures may not explain sufficiently enough the temperature dependent biological performances of pests in the field.

Laboratory evaluation of leguminous plants for the development and reproduction of the bean bug Riptortus pedestris (Hemiptera: Alydidae)

“…2019; Li et al . 2019; Ahn & Choi 2022). The bean bug directly damages soybean ( Glycine max (L.) Merr.)…”

“…The Hemiptera are composed of a large group of phytophagous and predaceous species and are considered to be major crop pests worldwide (McPherson 2018). In East Asia, including China, Japan, and Korea, the bean bug, Riptortus pedestris (Fabricius, 1775) (Hemiptera: Alydidae), has long been one of the most destructive pests of leguminous crops (Kho et al 2019;Li et al 2019;Ahn & Choi 2022). The bean bug directly damages soybean (Glycine max (L.) Merr.)…”

Lethal, Sub-Lethal and Trans-Generational Effects of Chlorantraniliprole on Biological Parameters, Demographic Traits, and Fitness Costs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

“…Insect mortality, fertility, and lifespan may all be affected by environmental variables, including heat, pesticides, and secondary plant metabolites. Demographic toxicology, or the life table, is useful for assessing these impacts [ 35 , 36 , 37 , 38 ]. The conventional life table focused only on the female population and overlooked the male population.…”

Response of wheat aphid to insecticides is influenced by the interaction between temperature amplitudes and insecticide characteristics

“…Compared to our results seen with constant temperature, the interaction between temperature amplitudes and imidacloprid markedly affected the intrinsic rate of increase. Under the wide temperature amplitude, imidacloprid was associated with a high intrinsic rate of increase, due to the short adult longevity and increased early fecundity ( Ahn and Choi., 2022 ). In conclusion, both the individual fitness of the adult and the response of population growth to positive temperature coefficient insecticides were considerably affected by the temperature amplitude.…”