PDF
Full
Outline
This study aimed to investigate the influence of environmental temperatures on the predation ability against Propylea japonica larvae and adults for Aphis sophoricola, and to identify the optimal temperature and instar for maximum pest suppression efficacy. Under controlled conditions of 20, 25 and 30 ℃, P. japonica and A. sophoricola were applied to quantify the predation rates of 1st to 4th instar larvae and adults on aphids at varying densities. Subsequently, the predation dynamics were analyzed by fitting the data to the Holling type II functional response model. At all tested temperatures, the functional response of P. japonica to aphid predation was conformed to fit assumption from the Holling type II model. At 25 ℃, the instantaneous attack rate of P. japonica （especially young larvae） was 2—5 times higher that at the other two temperatures, and the handling time was also shorter. At 30 ℃, P. japonica （especially old larvae and adults） exhibited the highest predation efficiency, and its theoretical daily maximum predation capacity was significantly higher than at other temperatures. At 20 ℃, the predation capacity and daily maximum predation were markedly reduced, which significantly inhibited predation efficiency. The 2nd instar larvae and adults are the optimal stages for P. japonica to exert the maximum control potential against A. sophoricola at 20 ℃ and 30 ℃, whereas the 3rd instar larvae are the optimal instar at 25 ℃. The 4th instar larvae and adults are the optimal instars and stages at 30 ℃. Overall, our study showed that pest control efficacy of P. japonica on A. sophoricola increased with its developmental maturity and reached its peak at higher ambient temperatures. In summary, this study provides a theoretical basis for releasing P. japonica in suitable life stages according to climatic conditions in field applications to achieve efficient aphid control.
PDF
18
2
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
