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Hypothenemus hampei (Ferrari), a newly invading pest in Hainan in 2019, is a serious threat to coffee production all over the world, posing a major threat to the healthy development of the coffee industry in Hainan and even the whole country. In order to understand the habits of this insect and provide basic data for the prevention and control of this insect in the future, this experiment observed its death-feigning, hunger tolerance ability, and discussed the lethal effect of short-term high temperature on it. The results showed that 24 h without feeding any food had no significant effect on the death-feigning of H. hampei adults. After the treatment at 45 ℃ for 2 h, the proportion and duration of death-feigning of H. hampei adults were significantly increased. The proportion of suspended death reaction was 72.0% and the duration of death-feigning was 320.33 s, which was significantly higher than 43.26 s at 26 ℃. H. hampei had a strong hunger tolerance ability, without providing any food, its longest survival time could reach 204 h, the average survival time was 90.17 h. After short-term high temperature treatment, both treatment temperature and treatment duration significantly affected the survival of adults of H. hampei. With the increase of treatment temperature and treatment duration, the mortality rate increased gradually. The corrected mortality rate was 94.92% after 6 h treatment at 45 ℃, and the mortality rate reached 100% after 12 h. Treatment at 36 ℃ and 39 ℃ for 6 h or less had little effect on the viability of H. hampei, and the mortality rate was 16.94% and 23.73% after 24 h, respectively. The Lt50 of different short-term high temperature treatments decreased with the increase of treatment temperature, and the Lt50 also decreased with the extension of observation time. The shortest Lt50 for 24 h and 48 h after 45 ℃ treatment was 3.11 h and 2.70 h. The longest Lt50 treated at 36 ℃ was 17.85 h and 11.42 h. The LT50 was 39.53 ℃ and 38.66 ℃ for 24 h and 48 h after 6 h of different short-time high temperature treatments, and the LT50 reduced with the extension of observation time.
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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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