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The 3rd to 5th instar nymphs and adults were released in tobacco fields and greenhouses to investigate the differences in dispersal capacity and dynamic patterns across developmental stages of Eocanthecona furcellata (Wolff). Under greenhouse conditions, dispersal characteristics including release timing, spatial distribution, diffusion coefficients and colonization rates were analyzed. Additionally, dispersal velocities across different developmental stages were measured under field conditions. Results demonstrated variations in dispersal capacity among developmental stages within 12-48 hours post-release, showing a gradual enhancement trend with advancing insect age. Throughout the release period, adults exhibited significantly higher dispersal coefficients than nymphs in tobacco fields, while in greenhouses, adult dispersal coefficients only surpassed nymphs significantly during 12-24 hours post-release. During dispersal, nymphs in the greenhouse primarily clustered on tobacco plants, while the majority of adults exhibited a radial dispersal tendency. At 72 hours post-release, significant differences in colonization rates emerged among developmental stages in greenhouses, with adults achieving markedly higher rates than nymphs, demonstrating a stepwise decline as instar levels decreased (adult>5th>4th>3rd). Dispersal patterns stabilized with prolonged release duration. This study would provide critical evidence for scientifically evaluating the biocontrol potential of E. furcellata, offering substantial significance for enhancing natural enemy efficacy and advancing scientific pest management strategies.
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| 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 |
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