Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress
Cadmium in agricultural soils has emerged as a substantial threat to crop health and yields through its bioaccumulation along the food chain, with further repercussions for the growth, development, and population dynamics of herbivorous insects. In this study, potted potato plants were treated with...
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2025-01-01
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| author | Bingyu He Jiebo Zhang Yang Hu Yi Zhang Jianan Wang Chao Li |
| author_facet | Bingyu He Jiebo Zhang Yang Hu Yi Zhang Jianan Wang Chao Li |
| author_sort | Bingyu He |
| collection | DOAJ |
| description | Cadmium in agricultural soils has emerged as a substantial threat to crop health and yields through its bioaccumulation along the food chain, with further repercussions for the growth, development, and population dynamics of herbivorous insects. In this study, potted potato plants were treated with Cd<sup>2+</sup> solutions at concentrations of 0 mg/kg, 30 mg/kg, 60 mg/kg, 90 mg/kg, and 120 mg/kg. Colorado potato beetles (<i>Leptinotarsa decemlineata</i>) were fed on potato leaves exposed to these varying concentrations of cadmium, and the effects on their growth and development were assessed. The results revealed that: 1. The developmental period, pupal stage, and pre-oviposition period of the first-instar larvae of <i>L. decemlineata</i> feeding on cadmium-contaminated leaves was significantly prolonged, while both the lifespan and fecundity were reduced. 2. Key population parameters, including the innate rate of increase (r), finite rate of increase (λ), net reproductive rate (R<sub>0</sub>), and gross reproduction rate (GRR), were evidently lower in cadmium-exposed <i>L. decemlineata</i>, while the average generation time did not show a significant difference. 3. Cadmium exposure also resulted in a remarkable reduction in survival and reproductive rates at specific life stages, along with an increase in the incidence of deformations in newly emerged adults. These findings underscore the detrimental effects of cadmium on both crop health and pest populations. This study holds valuable implications for more effective implementation of pest control strategies in the future, offering robust scientific evidence to support the safeguarding of food security. |
| format | Article |
| id | doaj-art-927eeb9d0fd64bac89edee1c020214b1 |
| institution | Kabale University |
| issn | 2075-4450 |
| language | English |
| publishDate | 2025-01-01 |
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| series | Insects |
| spelling | doaj-art-927eeb9d0fd64bac89edee1c020214b12025-01-24T13:35:47ZengMDPI AGInsects2075-44502025-01-011617310.3390/insects16010073Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium StressBingyu He0Jiebo Zhang1Yang Hu2Yi Zhang3Jianan Wang4Chao Li5Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaKey Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaKey Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaKey Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaKey Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaKey Laboratory of Prevention and Control of Invasive Alien Species in Agriculture & Forestry of the North-Western Desert Oasis, Ministry of Agriculture and Rural Affairs, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, ChinaCadmium in agricultural soils has emerged as a substantial threat to crop health and yields through its bioaccumulation along the food chain, with further repercussions for the growth, development, and population dynamics of herbivorous insects. In this study, potted potato plants were treated with Cd<sup>2+</sup> solutions at concentrations of 0 mg/kg, 30 mg/kg, 60 mg/kg, 90 mg/kg, and 120 mg/kg. Colorado potato beetles (<i>Leptinotarsa decemlineata</i>) were fed on potato leaves exposed to these varying concentrations of cadmium, and the effects on their growth and development were assessed. The results revealed that: 1. The developmental period, pupal stage, and pre-oviposition period of the first-instar larvae of <i>L. decemlineata</i> feeding on cadmium-contaminated leaves was significantly prolonged, while both the lifespan and fecundity were reduced. 2. Key population parameters, including the innate rate of increase (r), finite rate of increase (λ), net reproductive rate (R<sub>0</sub>), and gross reproduction rate (GRR), were evidently lower in cadmium-exposed <i>L. decemlineata</i>, while the average generation time did not show a significant difference. 3. Cadmium exposure also resulted in a remarkable reduction in survival and reproductive rates at specific life stages, along with an increase in the incidence of deformations in newly emerged adults. These findings underscore the detrimental effects of cadmium on both crop health and pest populations. This study holds valuable implications for more effective implementation of pest control strategies in the future, offering robust scientific evidence to support the safeguarding of food security.https://www.mdpi.com/2075-4450/16/1/73cadmiumlife tablepotato<i>Leptinotarsa decemlineata</i> |
| spellingShingle | Bingyu He Jiebo Zhang Yang Hu Yi Zhang Jianan Wang Chao Li Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress Insects cadmium life table potato <i>Leptinotarsa decemlineata</i> |
| title | Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress |
| title_full | Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress |
| title_fullStr | Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress |
| title_full_unstemmed | Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress |
| title_short | Age-Stage, Two-Sex Life Table of <i>Leptinotarsa decemlineata</i> (Coleoptera: Chrysomelidae) Experiencing Cadmium Stress |
| title_sort | age stage two sex life table of i leptinotarsa decemlineata i coleoptera chrysomelidae experiencing cadmium stress |
| topic | cadmium life table potato <i>Leptinotarsa decemlineata</i> |
| url | https://www.mdpi.com/2075-4450/16/1/73 |
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