| 陈晓燕，刘佳妮，郝若诗，李亚红，杨学存，桂富荣*,2017,大气CO2浓度升高对粘虫生长发育和繁殖的影响[J].环境昆虫学报,39(1):144-151 |
| 大气CO2浓度升高对粘虫生长发育和繁殖的影响 |
| Effects of the elevated atmospheric Carbon Dioxide levels on the growth, development and reproduction of Mythimna separata (Walker)(Lepidoptera: Noctuidae) |
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| DOI： |
| 中文关键词: CO2浓度 粘虫 生长发育 繁殖力 |
| 英文关键词:CO2 concentration Mythimna separata growth and development reproduction |
| 基金项目:国家自然科学基金项目(31260450，30860069)；云南省科技人才培养计划项目（2013HB072）；云南省植保植检站项目 |
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| 中文摘要: |
| 为明晰大气CO2浓度升高对粘虫Mythimna separata(Walker)生长发育和繁殖的影响，在人工气候箱800μL/L与400μL/L两种不同CO2浓度下，用人工饲料连续饲养粘虫3代后，分析其发育历期、体重、存活率等种群参数的变化。结果表明：不同CO2浓度处理下各世代的粘虫均能正常发育，各虫态的发育历期为：幼虫＞成虫＞蛹＞卵，幼虫1-3代的发育历期在两种CO2浓度下差异达极显著水平（P<0.001）；CO2浓度倍增条件下的蛹重和成虫体重较对照条件下明显下降；CO2浓度倍增对粘虫的性比影响不大，但可导致粘虫雌成虫寿命缩短，单雌平均产卵量和单雌日均产卵量下降。高CO2浓度下第1代粘虫种群的平均世代周期（T）和种群加倍时间（DT）分别延长了1.19和1.24 d，1-2代粘虫的净生殖率（Ro）、内禀增长率（rm）和周限增长率(λ）呈下降趋势，至第3代略有回升，但未达到显著性差异水平（P＞0.05）；高CO2浓度条件下粘虫1-3代的存活率分别为44%、31%和33%，分别较对照条件下对应世代粘虫的存活率低10%、27%和22%，其中第2、3代粘虫的存活率在两种CO2浓度条件下差异显著（P<0.05），第1代粘虫在高CO2浓度下存活率明显下降，至第3代时逐渐趋于稳定，说明随着世代的延长，粘虫对高CO2浓度的适应能力增强。 |
| 英文摘要: |
| To clarify the effects of enriched atmospheric CO2 levels on growth, development and fecundity of Mythimna separata (Walker), the insect which was the major agricultural, typical seasonal, long distance migratory pest in China. The influence were examined in CO2 artificial climate chambers under ambient (400 μL/L)and elevated CO2 level (800 μL/L). This paper measured the developmental duration, survival rate, and reproduction and population parameters of successive three generation of the oriental armyworm.Pupa and adult weight loss is obviously. The results showed that each generation army worm under different CO2 concentration treatment can grow and develop normally, the development stage order of this insect is larva＞adult＞pupa＞eggs. Compared to two kinds of CO2 concentration, the larva 1-3 generation development period up to the level of the extremely significant different (P＜0.001). Under the 800 uL/L atmospheric CO2concentration, the effect of sex ratio of armyworm is not obvious, but it's can lead to life of female shortened, oviposition rate per female and daily oviposition rate per female decreased. In the 800 uL/L condition, generation span (T)and time of double population size (DT)of the first generation were extend to 1.19 d and 1.24 d. The first and second generations population parameter of net reproductive rate (R0), intrinsic growth rate (rm)and DT showed downward trend, to the third generation slightly rebounded, but did not reach significant difference level (P＞0.05). Under the high CO2 concentration 1-3 generation of survival rates were 44%, 31% and 33%. Compared with the corresponding generation under the low CO2 concentration the survival rate is 10%, 27% and 22%, respectively. Among them the second and third generation armyworm survival rate under the condition of two kinds of CO2 concentration reach a difference significant (P＜0.05)。The first generation survival rate decreased significantly(P＜0.05), while to the third generation gradually stabilized. As the extension of generation, the adaptability of armyworm to high CO2 concentration increased. |
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