| 金剑雪,程英,李凤良*.七星瓢虫实验种群生命表[J].植物保护,2012,38(6):112-114. |
| 七星瓢虫实验种群生命表 |
| Experimental life table of Coccinella septempunctata |
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| DOI： |
| 中文关键词: 七星瓢虫 豆蚜 生命表 |
| 英文关键词:Coccinella septempunctata Aphis craccivora life table |
| 基金项目: |
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| 中文摘要: |
| 研究了豆蚜(Aphis craccivora Koch)饲养的七星瓢虫实验种群在(25±1)℃、70%~90%RH、16L∥8D的光照条件下的种群生命表，并对生命表进行分析得到各项参数。结果表明：在该条件下，七星瓢虫每头雌虫经历1个世代可产生106.742 3头雌性后代(R0)，从卵到羽化为成虫直至死亡平均经历8.3670周 (T)，即58.5692d；种群经过1.241 8周(即8.692 4 d)即可增长一倍(td)；平均每1头七星瓢虫雌虫的内禀增长率为0.558 2头(rm)，而其种群理论上每周以1.747 5倍的速率增长(λ)。 |
| 英文摘要: |
| The experimental life table and fecundity table of Coccinella septempunctata L. reared on Aphis craccivora Koch were established. The net reproductive rate was 106.742 3, the mean length of a generation was 8.367 0 weeks (58.569 2 days), the double population time was 1.241 8 weeks, the intrinsic growth of increase was 0.558 2, and finite rate increase was 1.747 5 under the conditions of (25±1)℃, 70%-90% RH and 16L∥8D. |
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