| 摘要: |
| 通过观察3种温度环境下卵形异绒螨卵的孵化和幼螨的出土得出,室内变温和恒温处理幼螨出土较田间分别早20 d和44 d,卵的孵化率各为87. 39% (田间), 54. 41% (10～21. 2℃)和21. 99% (24℃)。说明室内变温有利于卵的提早孵化,控制温度便可控制卵的孵化和幼螨的出土时间。通过幼螨对光照和饥饿的适应能力研究得出,光照和黑暗处理对该螨的存活不产生影响,而环境湿度对其存活影响较大,在适宜湿度下该螨可耐15 d饥饿。模拟降雨结果说明,短期小雨或阵雨仅影响该幼螨的一定活动时间,不影响其存活寄生;只有降大雨或连阴雨6 d以上才会对其存活产生显著影响。 |
| 关键词: 卵形异绒螨,卵,幼螨,生态适应性 |
| DOI： |
| 分类号:S433.7 |
| 基金项目:杨凌科学基金和校青年基金资助项目 |
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| A Study on the Ecological Adaptability of Allothrombium ovatum Larvae |
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| Abstract: |
| Based on the laboratory studies and survey of egg hatch and larval emergence from the soil of Allothrombium ovatum, it is found that the time of larval emergence is 20 days and 44 days shorber in the temperature change and 24℃ than in the
field. The rate of egg hatch are 87. 39% (field), 54. 41% (10-21. 2℃) and 21. 99%
(24℃), these results show that temperature change in laboratory shortens egg hatch
time, so controlling temperature may control egg hatch time and larval emergence.The
adaptalility study of larvae to light and hunger shows that larval survival under lighit
and in darkness is the same, but RH to the survival of larvae has significant effect.The
time of average hunger endurance of larvae under suitable RH is 15 days.Simulated rainfall studies show that little rain and middle rain in a short time only limit the activity of
larvae for a short time.After rain, the larvae can still survive and look for prey.Only
heavy rain and continuous rain overmore than 6 days have significant effect on the survival of larvae. |
| Key words: Allothrombium ovatum,egg,larvae,ecological adaptability, |
